baber/WOPTO huggingface dataset:
Patent DK-1609996-T3 (DK)
Inventor: GRUBER ERHARD
IPC: F04D29/32
Filed: 2005-06-06
Granted: 2007-12-17
Abstract: An axial ventilator has a fan with a number of blades whose roots are attached to a circular hub. The hub has an outer face on the root side and an inner face with a series of alternating thick (5b) and thin (5a) sections.
Patent DK-1794202-T3 (DK)
Inventor: LIN LON-TANG WILSON
IPC: C08G12/40
Filed: 2005-08-29
Granted: 2012-02-13
Abstract: This invention relates to a crosslinking composition comprising an organic acid and a compound having the structure of Formula I: A′-NRA—RD wherein A′, RA, and RD are defined in the specification. This invention also relates to a process for producing the crosslinking composition by reacting an amino compound containing amino groups; a mono(alkylaldehyde) and/or a poly(alkylaldehyde), and an alcohol; and adding an organic compound where said amino compound is selected from the group consisting of triazine, linear or cyclic ureas, cyanuric acid, substituted cyanuric acids, linear or cyclic amides, glycolurils, hydantoins, linear or cyclic carbamates and mixtures thereof.
Patent DK-1857547-T3 (DK)
Inventor: GIESE KLAUS
IPC: C12N15/113
Filed: 2003-08-05
Granted: 2018-04-23
Abstract: The present invention is related to a ribonucleic acid comprising a double stranded structure whereby the double- stranded structure comprises a first strand and a second strand, whereby the first strand comprises a first stretch of contiguous nucleotides and whereby said first stretch is at least partially complementary to a target nucleic acid, and the second strand comprises a second stretch of contiguous nucleotides whereby said second stretch is at least partially identical to a target nucleic acid, and whereby the double stranded structure is blunt ended.
Patent DK-1974622-T3 (DK)
Inventor: KIM SUNG-KWANG
IPC: A41D19/00
Filed: 2007-01-18
Granted: 2011-06-27
Abstract: A glove is provided that can warm the fingertips well, and can simply store a pocket warmer in a front end portion of the glove that corresponds to the fingertips. The glove (1) includes a storage portion (2) capable of storing a pocket warmer inside, wherein the storage portion (2) is provided in a front end portion of a glove body (11), which becomes a fingertip portion when a hand has been inserted in the glove body (11), and the storage portion (2) can be opened/closed via the front end of the glove body (11) by an opening/closing means provided in the front end of the glove body (11). The opening/closing means is a fastener (3).
Patent DK-2229415-T3 (DK)
Inventor: ROEGIERS KRISTIEN
IPC: C08F2/34
Filed: 2008-12-18
Granted: 2012-03-19
Abstract: The present invention concerns heterophasic propylene copolymers, comprising a propylene homopolymer (PPH) and an ethylene-propylene rubber (EPR), having a very broad molecular weight distribution, a well-defined total ethylene content and a specific intrinsic viscosities of the ethylene-propylene rubber (EPR). The invention further concerns the process to produce such heterophasic propylene copolymers. The heterophasic propylene copolymers of the present invention are particularly suited for pails, pallets, IBCs and crates. In particular, the heterophasic propylene copolymers of the present invention are characterized by an improved resistance to creep.
Patent DK-2248455-T3 (DK)
Inventor: LISCIO MICHELE
IPC: A47L11/30
Filed: 2009-05-08
Granted: 2012-08-13
Abstract: Floor cleaning machine (1) comprising at least one brush (2) that is drivable via a substantially vertical shaft (3) to rotate, at least one squeegee (4) that is arranged to the rear of said at least one brush (2), opposite to the travel direction of said floor cleaning machine (1), and means (5) for rotating said at least one squeegee (4), at least in part, around said at least one brush (2),  characterized in that  said rotating means (5) comprise an elongated element (6) that is provided with a first portion (6a), rotatably freely coupled to said vertical shaft (3), and a second (6b) portion, coupled directly, or indirectly, to said at least one squeegee (4).
Patent DK-0379979-T3 (DK)
Inventor: SHIOKAWA YOUICHI
IPC: C07D471/04
Filed: 1990-01-19
Granted: 1997-04-07
Abstract: A pyrazolopyridine compound of the formula : <CHEM>  wherein  R<1> is aryl, and R<2> is unsaturated heterocyclic group which may have one or more suitable substituent(s), and a pharmaceutically acceptable salt thereof, processes for their preparation an pharmaceutical compositions comprising them in admixture with pharmaceutically acceptable carriers.
Patent DK-0384380-T3 (DK)
Inventor: UCHIDA ITSUO
IPC: A61P25/00
Filed: 1990-02-20
Granted: 1996-07-15
Abstract: Peptide derivatives of the following general formula <CHEM> wherein R<1> and R<2> are the same or different and respectively mean a hydrogen atom or a C1-5 alkyl group, R<3> and R<4> are the same or different and respectively mean a hydrogen atom or a C1-5 alkyl or phenyl, or R<3> and R<4> combinedly mean a C2-7 alkylene group, R<5> and R<6> are the same or different and respectively mean a hydrogen atom or a C1-5 alkyl group, X means -NH-, -O- or -CH2-, Y means -CH2- or -S-, and m and n respectively mean 0 or 1, provided that when X is -NH- or -O-, m is 1 and all of R<1>, R<2>, R<3> and R<4> do not mean a hydrogen atom at the same time; acid addition salts thereof; and pharmaceutical use thereof. Since the compounds and their acid addition salts of the present invention possess more potent actions on central nervous system (e.g. antagonistic action against hypothermia, locomotor stimulant action, spinal reflex stimulant action), they are of use as a therapeutic medicament for central nervous disorders such as impaired consciousness, depression, hypomnesia, the like in association with schizophrenia, melancholia, senile dementia, sequelae of cerebrovascular disorders, head trauma, epilepsy and spinocerebellar degeneracy.
Patent DK-0462164-T3 (DK)
Inventor: FRENCH JAMES WILLIAM LEONARD
IPC: A23L13/60
Filed: 1990-03-07
Granted: 1995-05-29
Abstract: A method is provided of reconstituting meat products which comprises mixing with a de-boned or separated meat (D or S meat), a fibrous collagen in order to distribute the added collagen substantially homogeneously throughout the D or S meat, removing occluded air and voids from the mixture and forming the mixture into discrete portions or a continuous extrusion by pressing the mixture through a restrictor. Normally between 1 and 10 % of fibrous collagen is incorporated in the reconstituted meat product.
Patent DK-0459450-T3 (DK)
Inventor: KONO MASAO
IPC: C07K16/40
Filed: 1991-05-29
Granted: 1995-12-11
Abstract: The present invention first provides monoclonal antibodies recognizing membrane phospholipase A2, namely, monoclonal antibodies PL-49, PL-71, PL-76, and PL-78, hybridomas producing them, methods for producing them, and immunoassays of membrane phospholipase A2 using them. The immunoassay of PLA2M is useful for the diagnosis of articular rheumatism, cancers, and a wide variety of inflammatory states.
Patent DK-0475652-T3 (DK)
Inventor: ISOGAI TAKAO
IPC: C12N9/80
Filed: 1991-09-02
Granted: 1996-04-01
Abstract: A cephalosporin C acylase with the following characteristics:   (a) has ability to catalyze the enzymatic conversion of cephalosporin C, glutaryl 7-ACA, adipyl 7-ACA, succinyl 7-ACA, N-acetylcephalosporin C, N-benzoylcephalosporin C and cephalothin into 7-amino cephalosporanic acid, (b) is composed of  alpha -subunit [Molecular weight : 26,000 dalton (SDS-PAGE)] and  beta -subunit [Molecular weight : 58,000 dalton (SDS-PAGE)], (c) has N-terminal amino acid sequence of the  alpha -subunit : Thr-Met-Ala-Ala-Asn-Thr-Asp-Arg-Ala-Val-Leu-Gln-Ala-Ala-Leu-Pro-Pro-Leu- DNA encoding for the cephalosporin C acylase, an expression vector containing said DNA, and a microorganism transformed with said expression vector are also provided. A process for producing the cephalosporin C acylase, which comprises culturing the transformant in an aqueous nutrient medium, is described.
Patent DK-0502814-T3 (DK)
Inventor: HYACINTHE ROLAND
IPC: A61K49/22
Filed: 1992-02-05
Granted: 1995-08-21
Abstract: Suspensions of echogenic particles in aqueous bioadhesive carriers effectively improve imaging by echography of the digestive tract. Affinity of the compositions for the gastric mucosa can be adapted to the needs by appropriately selecting the carrier in function to its inherent bioadhesive capacity.
Patent DK-0560905-T3 (DK)
Inventor: TAYLOR CHANDLER ROY JR
IPC: A61K31/40
Filed: 1991-11-14
Granted: 1995-04-18
Abstract: The present invention relates to novel 3-(2-chlor-4-trifluoromethylphenoxy)-1-azetidine carboxamides having the formula:   <IMAGE>   wherein R1 and R2, same or different, are selected from hydrogen, C1-C4 alkyl, and allyl. In a series of 3-(substitutedphenoxy)-1-azetidinecarboxamides, introduction of a chlorine atom at the 2-position of the phenoxy group of the corresponding 4-trifluoromethylphenoxy-1-azetidinecarboxamides resulted in unexpected increased potency in anticonvulsant pharmacological tests.
Patent DK-0596322-T3 (DK)
Inventor: VON BONIN WULF DR
IPC: C09K3/00
Filed: 1993-10-20
Granted: 1997-06-09
Abstract: Gel formers and gels contain   a) acid aluminium phosphates, optionally in the form of reaction products with from 0.01 to 4 mol of alkanolamines per mole of aluminium phosphate, and   b) reaction products of boric acid with alkanolamines, in which a) and b), calculated as solids, are in a weight ratio of from 100:55 to 100:0.5.
Patent DK-0592055-T3 (DK)
Inventor: SCHNORRER WALTER
IPC: B23K9/16
Filed: 1991-11-11
Granted: 1997-05-26
Abstract: The device according to the invention is intended for protective gas coverage on the root side in the area of tube welding. The peculiar feature of the invention is a plurality of discharge duct means (19,20) evenly distributed at a distance from the gas supply means (15,14). Thereby a more safe removal of atmospheric oxygen from the enclosure (17) created by the device is ensured, thus improving the quality of the welding and reducing protective gas consumption in the welding process. <IMAGE>
Patent DK-0627098-T3 (DK)
Inventor: LAWSON TERENCE MICHAEL
IPC: C08L101/00
Filed: 1993-02-10
Granted: 1998-04-06
Abstract: PCT No. PCT/AU93/00051 Sec. 371 Date Aug. 15, 1994 Sec. 102(e) Date Aug. 15, 1994 PCT Filed Feb. 10, 1993 PCT Pub. No. WO93/16415 PCT Pub. Date Aug. 19, 1993A method of production of microparticles of a thermoplastic polymer suitable as a toner for electrostatographic processes comprising the steps of melting the material in a continuous non-solvent phase having a boiling point higher than the melting point of the thermoplastic polymer, mixing the thermoplastic polymer in the continuous phase to produce an emulsion, and cooling the emulsion to produce a dispersion of solid microparticles of the thermoplastic polymer in the continuous phase. The thermoplastic polymer may include pigments or dyes to provide colored toner particles. A surface active agent may be used to control particle size.
Patent DK-0590126-T3 (DK)
Inventor: HILES IAN D
IPC: C07K19/00
Filed: 1993-04-13
Granted: 2007-06-11
Abstract: This invention relates to new polypeptides which exhibit kinase activity or, more specifically, which show phosphoinositide (PI)3-kinase activity. Such polypeptides are involved in pathways responsible for cellular growth and differentiation. An isolated polypeptide which possesses PI3-kinase activity when produced by recombinant production in insect cells is disclosed.
Patent DK-0637306-T3 (DK)
Inventor: NIEDUZAK THADDEUS R
IPC: C07D401/06
Filed: 1993-03-24
Granted: 2001-07-30
Abstract: The present invention is directed to a new class of serotonin 5HT2 antagonists and thier use in the treatment of a variety of diseases.
Patent DK-0651845-T3 (DK)
Inventor: ROSSATO ERIDE
IPC: E04H6/06
Filed: 1993-07-08
Granted: 1998-05-11
Abstract: A vehicle parking installation, characterised by comprising in combination: a pair of vertical columns (2), a plurality of platforms (8, 8') movable independently of each other along said columns (2), means (30, 34) for locking said platforms (8, 8') along said columns at predetermined distances apart suitable for accommodating individual automobiles, a member (22, 28) for driving said platforms (8, 8') along said columns, a central control unit (36) for said driving member and said locking means.
Patent DK-0651757-T3 (DK)
Inventor: ZILCH HARALD
IPC: C07F9/38
Filed: 1993-07-13
Granted: 1997-07-28
Abstract: PCT No. PCT/EP93/01833 Sec. 371 Date Mar. 28, 1995 Sec. 102(e) Date Mar. 28, 1995 PCT Filed Jul. 13, 1993 PCT Pub. No. WO94/02492 PCT Pub. Date Feb. 3, 1994Compounds of the formula I    <IMAGE>  (I)  in which R1 signifies hydrogen, a straight-chained, branched, saturated or unsaturated alkyl radical with 1-9 carbon atoms possibly substituted by phenyl or a phenyl ring which is possibly substituted by C1-C3alkyl, C1-C3-alkoxy or halogen, R2 signifies hydrogen or C1-C3-alkyl, whereby the two radicals can be the same or different, R represents hydrogen or a straight-chained or branched alkyl radical with 1-4 carbon atoms, X signifies an alkylene chain with 1-6 carbon atoms which can be substituted one or more times by C1-C3-alkyl and can possibly be interrupted by oxygen, whereby 1 or 2 carbon stems of the alkylene chain can possibly be part of a cyclopentyl or cyclohexyl ring and Y signifies hydrogen, hydroxyl or amino group possibly substituted by alkyl groups with 1-6 carbon atoms, as well as their pharmacologically acceptable salts, processes for their preparation, as well as medicaments for the treatment of calcium metabolism disturbances.
Patent DK-0649422-T3 (DK)
Inventor: KNOX MARTIN BARNTICK
IPC: C07D307/88
Filed: 1993-07-09
Granted: 1997-04-14
Abstract: Mycophenolate mofetil is made non-catalytically by refluxing mycophenolic acid with 2-morpholinoethanol in an inert organic solvent capable of azeotropic removal of water.
Patent DK-0666941-T3 (DK)
Inventor: BROWN WILLIAM
IPC: E01D11/00
Filed: 1993-10-27
Granted: 1998-01-05
Abstract: PCT No. PCT/EP93/02985 Sec. 371 Date May 26, 1995 Sec. 102(e) Date May 26, 1995 PCT Filed Oct. 27, 1993 PCT Pub. No. WO94/10386 PCT Pub. Date May 11, 1994Framework for a suspension bridge of the type comprising an essentially flat main structure, the top surface of which forms the traffic lane for the transport structure crossing the bridge, anchored to a suspension system formed of a plurality of vertical hangers (6) fixed to catenary cables (5) anchored to end piers of the bridge. The framework consists of at least two parallel longitudinal box-like bodies corresponding to two runways of the bridge, reciprocally spaced by an extent equal to their transverse dimension. Said bodies have a cross section with a profile adapted to favor the proper flow of the wind stream and they are interconnected, at regular intervals, by stiff supporting transverse ledgers (4) having in turn a box-like configuration and carrying at their ends means for their anchorage to the suspension hangers (6).
Patent DK-0610056-T3 (DK)
Inventor: PARTYKA DORIS
IPC: A61F13/00
Filed: 1994-02-01
Granted: 2002-09-16
Abstract: A hydrogel dressing is provided which is suitable for adherence to an adhesive coated backing of a bandage. The dressing consists of a layer of hydrogel in face-to-face relationship with a substrate. The hydrogel facing surface of the substrate preferably comprises fibers projecting into the hydrogel and the opposed surface preferably comprises a hydrogel occlusive polymeric film. The hydrogel is crosslinked, in situ, on the substrate and thereby firmly anchors thereto. The occlusive film assures adhesion of the dressing to an adhesive coated bandage backing.
Patent DK-0684946-T3 (DK)
Inventor: WANG RICHARD HSU-SHIEN
IPC: B01J31/02
Filed: 1994-02-14
Granted: 1997-05-26
Abstract: Disclosed is an improved process for the preparation of 4,4'-bis(2-benzoxazolyl)stilbene compounds by the reaction of 4,4'-stilbenedicarboxylic acid with 2-aminophenol compounds in the presence of a tin or titanium catalyst and certain solvents.
Patent DK-0691950-T3 (DK)
Inventor: DOETZER REINHARD
IPC: C07C251/86
Filed: 1994-03-19
Granted: 1997-10-06
Abstract: Described are compounds of the formula (I) in which Y is oxygen or an NR6 group; Z<1> and Z<2> are hydrogen, halogen, alkyl, alkenyl, alkinyl, alkoxy, alkenyloxy, haloalkyl, haloalkoxy, haloalkenyloxy, cyano or nitro; R<1> is hydrogen, alkyl, haloalkyl or aryl; R<2> is hydrogen, alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkenyl, aryl, heteroaryl, arylalkyl, heteroarylalkyl, arylalkenyl, heteroarylalkenyl, aryloxyalkyl, heteroarylalkyl, arylalkenyl, heteroarylalkenyl, aryloxyalkyl, heteroaryloxyalkyl, acyl, arylcarbonyl, heteroarylcarbonyl or alkoxycarbonyl and R<3>, R<4>, R<5> and R<6> are hydrogen or alkyl, whereby R<6> and R<2> can together form a ring. Also described are fungicides containing these compounds.
Patent DK-0725822-T3 (DK)
Inventor: SCHWEDEN JUERGEN
IPC: C12N15/16
Filed: 1994-10-17
Granted: 2000-12-04
Abstract: A process for the recombinant production of proteins in yeast comprises transforming the yeast with an expression cassette which comprises the following structural elements encoded:L-A-P-GENwhere L is a leader sequence of an animal peptide neurohormone, A is an adaptor producing an alpha-helix structure, P is a processing signal and GEN is a structural gene for the required protein.
Patent DK-0700905-T3 (DK)
Inventor: WICHMANN JUERGEN
IPC: A61P25/00
Filed: 1995-08-04
Granted: 2002-02-18
Abstract: Issued in Week 9616. First Major Country Equivalent to NO9503162A.   minoalkyl-substd. tricyclic pyrazoles of formula (I) and their salts are new: R<1>-R<4>= H, OH, halo, lower alkyl, or lower alkoxy; R<5> = H or lower alkyl; R<6> = H, lower alkyl or lower alkoxy; X = (CR<7>R<8>)n or CH=CH; R<7>, R<8> = H or lower alkyl; n = 1 or 2.
Patent DK-0729352-T3 (DK)
Inventor: JANOFF ANDREW S
IPC: A61P9/00
Filed: 1994-11-15
Granted: 1999-09-20
Abstract: This invention provides an interdigitation-fusion liposome comprising an arachidonic acid metabolite, a lipid bilayer comprising a lipid and an aqueous compartment comprising a release-inhibiting buffer. Preferred arachidonic acid metabolites are the prostaglandins, particularly PGE1. The liposomal formulations can be used to treat animals, particularly humans, for diseases, disorders or conditions which can be ameliorated by prostaglandins, e.g., cell activation/adhesion disorders and inflammatory disorders.
Patent DK-0743879-T3 (DK)
Inventor: PEREYRE MICHEL
IPC: C08G18/24
Filed: 1995-02-10
Granted: 2001-09-17
Abstract: Tin derivatives for use as oxygen-activated latent polycondensation catalysts. According to the invention, said tin derivatives have at least one tin-tin bond of the formula (I): R1-Yn-R4 wherein R1 and R4 which can be the same or different, are selected from hydrogen, and advantageously from the hydrocarbon radicals or together form a divalent radical or a single ring forming-bond; wherein n is at least equal to 2; wherein the Y, which are the same or different, stand for a stannic grouping having the structure (s): R' and R'', which can be the same or different, are selected from hydrogen and advantageously from the hydrocarbon radicals. Application to paints.
Patent DK-0719779-T3 (DK)
Inventor: ADACHI HIDEYUKI
IPC: C07K5/078
Filed: 1995-06-07
Granted: 2004-03-22
Abstract: The present invention relates to a substituted thiazoloÄ3,2-aÜazepine derivative having inhibitory activity against angiotensin I converting enzyme and neutral endpeptidase. The above substituted thiazoloÄ3,2-aÜazepine derivative is represented by the following general formula (I): <CHEM> (wherein R1 represents a hydrogen atom or a protecting group of a thiol group; R2 represents a hydrogen atom, a lower alkyl group, an aryl group which may have a substituent, a hetroaryl group which may have a substituent, a lower alkoxyl group or a lower alkylthio group; R3, R4 and R5 may be the same or different from one another and represent each a hydrogen atom, a lower alkyl group, a lower alkoxyl group, a lower alkylthio group or the like, with the proviso that the case wherein all of R3, R4 and R5 are hydrogen atoms are excepted; R6 and R7 may be the same or different from each other and represent each a hydrogen atom or a lower alkyl group; R8 represents a hydrogen atom or a protecting group of a carboxyl group; and m and m are each independently 0 or, 1 or 2).
Patent DK-0731400-T3 (DK)
Inventor: WIDL ANDREAS
IPC: G05D1/02
Filed: 1996-03-04
Granted: 2002-03-18
Abstract: The data reduction system is used for data transmitted between a floating vehicle and a trackside device, identifying the vehicle operating parameters and its position within a given coordinate system. The vehicle data is stored in a memory at spaced time intervals, or each time a specific distance is travelled, the corresponding position data entered in a second memory. The position data is reduced via a vector method before transmission to the roadside device with the stored vehicle data.
Patent DK-0762306-T3 (DK)
Inventor: VANCE ARLENE M
IPC: G06Q10/00
Filed: 1996-09-06
Granted: 2004-01-26
Abstract: A system for corporate travel planning, expense reporting and travel management comprises a computerised reservation system (30), a relational database server computer (18) adapted to be linked to the reservation system (30) and a travel planning, expense reporting and travel management system (38) resident on a personal computer (22) and providing a graphical user interface for communication between a user of the personal computer, the system (38) and the relational database server (18). <IMAGE>A system for corporate travel planning, expense reporting and travel management comprises a computerised reservation system (30), a relational database server computer (18) adapted to be linked to the reservation system (30) and a travel planning, expense reporting and travel management system (38) resident on a personal computer (22) and providing a graphical user interface for communication between a user of the personal computer, the system (38) and the relational database server (18). <IMAGE>
Patent DK-0830262-T3 (DK)
Inventor: KOCH ROBERT
IPC: B61D17/22
Filed: 1996-05-17
Granted: 1999-05-25
Abstract: A fixture for covering the track joint between the rotary plate of the swivel joint and the bellows or concertina walls of an articulated vehicle comprises a frame to hold the track joint covering bellows, the frame (7, 9) having a mouth (11) that can be used to hold the end of the joint covering bellows (5) is place.
Patent DK-0960111-T3 (DK)
Inventor: HARTMANN MICHAEL
IPC: A61K31/4965
Filed: 1996-12-20
Granted: 2005-02-07
Abstract: PCT No. PCT/GB96/03193 Sec. 371 Date Dec. 8, 1998 Sec. 102(e) Date Dec. 8, 1998 PCT Filed Dec. 20, 1996 PCT Pub. No. WO97/22606 PCT Pub. Date Jun. 26, 1997Morphine derivatives of formula (I), process for perparing them and their use and use as analgesics.
Patent DK-0873507-T3 (DK)
Inventor: RAMSEY EDWARD
IPC: G01N21/35
Filed: 1997-01-08
Granted: 2005-01-03
Abstract: Analytical apparatus which may be used for monitoring compounds present in a fluid, and a method of analysis. Compounds are extracted from the fluid sample in an extraction chamber by means of a supercritical fluid and analyzed in an analysis cell, which is in direct communication with the extraction cell.
Patent DK-0877559-T3 (DK)
Inventor: LIN CHARLES F
IPC: A23K1/18
Filed: 1997-01-27
Granted: 2002-01-28
Abstract: A food composition having improved palatability to cats comprising a nutritious food mass and an palatability enhancing amount of a choline compound. The choline compound is incorporated within, or applied to the surface of, the cat food composition.
Patent DK-0952822-T3 (DK)
Inventor: WATTS PETER JAMES
IPC: A61K9/16
Filed: 1998-01-14
Granted: 2003-07-21
Abstract: A drug delivery composition for nasal administration is provided which comprises the antiviral agent ICAM-1 and a bioadhesive material. The bioadhesive material may be a chitosan solution, a liquid formulation comprising a polymeric material or a plurality of bioadhesive microspheres. The polymeric material is preferably gellan gum or alginate. The microspheres may comprise starch, chitosan, hyaluronic acid, or gelatin.