baber/WOPTO huggingface dataset:
Patent MY-188726-A (MY)
Title: Bioflocculant and biosorbent derived from dead cells of marine filamentous bacterium for heavy metal and waste material removal
Inventor: Go Furusawa
IPC: C02F1/52
Filed: 2017-09-06
Abstract: The present invention relates to a method of producing an article suitable for use as a bioflocculant or a biosorbent for waste material and heavy metal removal. The method preferably comprises the steps of culturing cells from a bioflocculant-producing bacterium in a culture medium up to a log phase of bacteria growth (100); harvesting and separating the culture cells of said bacterium from the culture medium (200), wherein the harvesting includes centrifugation; and fixing the harvested cells of bioflocculant-producing bacterium by subjecting the same to treatment with formaldehyde (300), characterized in that, the fixed cells of said article are dead cells of the bioflocculant-producing bacterium that has the same bioflocculant activity with living cells.
Patent MY-194802-A (MY)
Title: Method for pretreating oil palm fronds, and method for producing biomass fuel
Inventor: Yuta TAHARA
IPC: C10L5/44
Filed: 2017-09-07
Abstract: To provide a method for pretreating oil palm fronds capable of efficiently removing alkali metal and chlorine from oil palm fronds (OPF). A method for pretreating oil palm fronds according to the present invention includes a step (a) of heating an oil palm frond, a step (b) of squeezing the oil palm frond heated in the step (a), a step (c) of washing the oil palm frond with water while applying a physical impact to the oil palm frond squeezed in (b), and a step (d) of water spray washing the oil palm frond that has been water washed in the step (c) after draining.
Patent MY-193679-A (MY)
Title: Catheter devices with valves and related methods
Inventor: WOEHR KEVIN
IPC: A61M39/06
Filed: 2016-08-18
Abstract: Needle assemblies (100,400,600) and related methods in which a valve opener (134) is used to push into a valve (136) to open one or more slits (324) on the valve (136) to open the valve (136). The needle assemblies (100, 400, 600) each includes a needle hub (106) with a needle (108), a catheter tube (104) with a catheter hub (102) and the valve (136) and valve opener (134) positioned in the interior cavity (130) of the catheter hub (102). The valve (136) can have a valve skirt (412) and a nose section (430) of the valve opener (134) can locate therein. One or more reliefs (61, 448) can be provided with the valve opener (134) so that an elbow or diagonal section (304) on a needle guard (132) can project from a holding space (155, 720) within the valve opener (134) through the relief (61, 448).  (Fig. 9)
Patent MY-191842-A (MY)
Title: Expec glycoconjugate vaccine formulations
Inventor: ADRIAANSEN JANIK
IPC: C08B37/00
Filed: 2017-10-24
Abstract: Compositions and methods for inducing an immune response against extra- intestinal pathogenic Escherichia coli (ExPEC) are described. In particular, multivalent vaccines containing E. coli antigen polysaccharide covalently bound to a exotoxin A of Pseudomonas aeruginosa (EPA) carrier protein that can withstand multiple environmental stresses are described.
Patent MY-196212-A (MY)
Title: Skin Adhesive Sheet
Inventor: TAKEDA YOSHINOBU
IPC: A61K8/02
Filed: 2019-02-21
Abstract: According to one aspect of the present invention, provided is a skin adhesive sheet (1)including an adhesive agent (2) having a base material layer (5) and a sticky material layer (6) laminated on a back surface side of the base material layer (5), a release paper (3) provided to cover the sticky material layer (6), a protective film (4) provided to cover a front surface side of the base material laye r (5), a first slit (7) to divide the adhesive agent (2) into a main body part (8) to be made adhere to a skin (Sk) when used and a removal part (9) to be removed when used, and a second slit (11) to divide the release paper (3) into a peel part (12) to be peeled when used and a holding part (13) to be held by a user when used. The adhesive agent (2) is formed so as to have a cross-sectional area (S) decreasing from the main body part (8) toward a portion near the first slit (7) and increasing from the portion near the first slit (7) toward the removal part (9). Figure 3.
Patent MY-170021-A (MY)
Title: Elastomeric gloves and methods for their production
Inventor: KHON PU FOO
Filed: 2018-06-22
Abstract: The present application provides a synthetic elastomeric glove with (a) a thickness at the palm of less than 0.05mm; (b) a modulus at 500% above 6.5 MPa; and/or (c) elongation at break below 700%.
Patent SG-10201802243R-A (SG)
Title: Storage facility for object of paying of respects
Inventor: Hidenobu SHINNAKA
Filed: 2018-03-19
Abstract: STORAGE FACILITY FOR OBJECT OF PAYING OF RESPECTS A storage facility for objects of paying of respects comprises a 5 partition wall located to partition off the support position from a respects-paying position for a person visiting to pay respects, a window member including a variable-light-transmittance member whose light transmittance is adjustable, an illuminating device for which an amount of light emitted thereby is adjustable, and a controller. A window for allowing 10 the person visiting to pay respects to view an object of paying of respects is formed in an area, of the partition wall, toward which the object of paying of respects faces when supported in the support position. The window is provided with a window member. And the illuminating device is so positioned that light therefrom reaches the object of paying of respects 15 supported in the support position. The controller is configured to increase at least one of the light transmittance of the window member and the amount of light emitted by the illuminating device as an object of paying of respects arrives at the support position through a transport operation of the transport device. 20 [Figure 3]
Patent SG-10201805995V-A (SG)
Title: Determining a common secret for the secure exchange of information and hierarchical, deterministic cryptographic keys
Inventor: WRIGHT CRAIG STEVEN
Filed: 2017-02-16
Abstract: A method (300) and system (1) of determining a common secret for two nodes (3, 7). Each node (3, 7) has a respective asymmetric cryptography pair, each pair including a master private key and a master public key. Respective second private and public keys may be determined based on the master private key, master public key and a deterministic key. A common secret may be determined at each of the nodes based on the second private and public keys. In one example, a node (3, 7) may determine the common secret based on (i) a second private key based on the node's own master private key and the deterministic key; and (ii) a second public key based on the other node's master public key and the deterministic key. The invention may be suited for use with, but not limited to, digital wallets, blockchain (e.g. Bitcoin) technologies and personal device security. (Fig. 1)
Patent SG-10201903575U-A (SG)
Title: Process for the preparation of a pde4 inhibitor
Inventor: FALCHI ALESSANDRO
Filed: 2014-10-17
Abstract: PROCESS FOR THE PREPARATION OF A PDE4 INHIBITOR The present invention relates to a process and intermediates for the preparation of compounds endowed with phosphodiesterase (PDE4) inhibitory activity having formula (I). The invention also relates to the process for the isolation by crystallization of the compound (I) and to 5 its use for the preparation of pharmaceutical compositions for inhalation in combination with suitable carriers or vehicles. The present invention also relates to solvates and crystal forms of a compound of formula (I). The synthesized product is suitable for use in pharmaceutical applications for instance in the treatment of respiratory diseases. 10 o F~ F (I) 15 Figure for publication: None
Patent SG-10201903614X-A (SG)
Title: Semiconductor module
Inventor: Jae-Seok JANG
Filed: 2019-04-23
Abstract: A semiconductor module includes a module substrate having a first side extending in a first direction, a plurality of upper packages disposed on a top surface of the module substrate and arranged in rows extending in the first direction, and a passive element disposed on the top surface of the module substrate. At least a portion of the passive 5 element overlaps one of the upper packages when viewed in a plan view, and the upper packages of a first row are arranged to be shifted with respect to the upper packages of a second row in the first direction. FIG. 1A
Patent SG-11201806320P-A (SG)
Title: Method of forming an article
Inventor: BOCKING
IPC: B65D81/38
Filed: 2017-02-02
Abstract: WO 17 / 13 418 1 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/134181 Al 10 August 2017 (10.08.2017) WIPO I PCT (51) International Patent Classification: B29C 44/04 (2006.01) B65D 1/44 (2006.01) B65D 1/26 (2006.01) B65D 81/38 (2006.01) (21) International Application Number: PCT/EP2017/052291 (22) International Filing Date: 2 February 2017 (02.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 1601946.5 3 February 2016 (03.02.2016) GB (71) Applicant: BOCKATECH LTD [GB/GB]; 1 Pennycroft Cottages, Mead Lane, Upper Basildon, Reading RG8 8ND (GB). (72) Inventors: BOOKING„ Chris; 42 Wallingford Road, Goring, Reading RGO8 OBG (GB). CLARKE„ Peter; 2 Flint Cottages, Woodcote Farm, Graffham, Petworth, West Sussex GU28 ONU (GB). (74) Agent: JENKINS, Peter, David; Page White & Farrer, Bedford House, John Street, London Greater London WC1N 2BF (GB). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3)) (54) Title: METHOD OF FORMING AN ARTICLE FIG. 1 (57) : The present invention provides methods of forming an article from a molten plastic composition comprising a poly - mer and a blowing agent. The methods include injecting the molten plastic composition into a mould, allowing the plastic composi - tion to form a first solid skin adjacent to an in contact with a first cavity-forming surface of the mould and a second solid skin adja - cent to and in contact with a second cavity-forming surface of the mould, and then opening the mould before the molten plastic com- position between the first and second solid skins in at least one portion of the circumference of a region of the mould cavity defining an annular cross-section of the cavity has solidified. 1111111111111101110111111111110101111101110111011111111 0111H01111111110111111
Patent SG-11201807249Y-A (SG)
Title: Planar-beam, light detection and ranging system
Inventor: BOEHMKE SCOTT
IPC: G05D1/02
Filed: 2017-03-02
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization 111111110111101110101011111010111110111011110110111111011111001111101111011111 International Bureau .. .... ..Yejd (10) International Publication Number (43) International Publication Date ..... .....!;,,, WO 2017/151943 Al 8 September 2017 (08.09.2017) WIP0 I PCT (51) International Patent Classification: AO, G05D 1/02 (2006.01) B60W 30/10 (2006.01) BZ, G01S 17/93 (2006.01) DO, HN, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, BY, DM, GT, KN, (21) International Application Number: KP, PCT/US2017/020483 MD, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, ME, MG, MK, MN, MW, MX, MY, MZ, NA, MA, NG, (22) International Filing Date: NI, 2 March 2017 (02.03.2017) RU, TH, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, RS, SY, VN, (25) Filing Language: English ZA, ZM, ZW. (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every (30) Priority Data: kind 62/303,013 3 March 2016 (03.03.2016) US GM, 15/446,953 1 March 2017 (01.03.2017) US TZ, of regional protection available): ARIPO (BW, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, GH, SZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, (71) (72) Applicant: UBER TECHNOLOGIES, INC. [US/US]; DK, 1455 Market St., 4th Floor, San Francisco, California LV, 94103 (US). SM, GW, KM, ML, MR, NE, SN, TD, TG). Inventor: BOEHMKE, Scott; 3011 Smallman St., Pitts- EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, LU, SK, GQ, burgh, Pennsylvania 15201 (US). Published: (74) Agent: MAHAMEDI, Zurvan; Mahamedi IP Law LLP, — with international search report (Art. 21(3)) 1901 S. Bascom Ave., Suite 600, Campbell, California before the expiration of the time limit for amending the 95008 (US). claims and to be republished in the event of receipt of (81) Designated States (unless otherwise indicated, for every amendments (Rule 48.2(h)) kind of national protection available): AE, AG, AL, AM, — Il M 7r C:r 11 kr) 1-1 IN 1-1 0 \" (54) Title: PLANAR-BEAM, LIGHT DETECTION AND RANGING SYSTEM (:) .,.. (57) : A planar-beam, light detection and ranging (PLADAR) system can include a laser scanner that emits a planar-beam, and a detector array that detects reflected light from the planar beam.
Patent SG-11201907421Q-A (SG)
Title: Chemical composition
Inventor: REYNAUD ROMAIN
IPC: A61Q5/06
Filed: 2018-03-07
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 13 September 2018 (13.09.2018) WIPO I PCT 0111111010 0111 °nolo Oil IIIII Oil ioo IIIII Il imio oimIE (10) International Publication Number WO 2018/162604 Al (51) International Patent Classification: A61Q 5/00 (2006.01) A61Q 5/12 (2006.01) A61Q 5/02 (2006.01) A61K 8/73 (2006.01) A61Q 5/06 (2006.01) (21) International Application Number: PCT/EP2018/055684 (22) International Filing Date: 07 March 2018 (07.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 1703674.0 08 March 2017 (08.03.2017) GB (71) Applicant: GIVAUDAN SA [CH/CH]; Chemin de la Par- fumerie 5, 1214 Vernier (CH). (72) Inventors: REYNAUD, Romain; 1A me passe demoi- selle, 51100 Reims (FR). CHAPUIS, Emilie; 4 rue Mozart, 51140 Courcelles Sapicourt (FR). (74) Agent: GLOBAL PATENTS; Givaudan International SA, Uberlandstrasse 138, 8600 Diibendorf (CH). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) (54) Title: CHEMICAL COMPOSITION O Fig. 1 O (57) : An anti-frizz hair care composition, comprising a low molecular weight hyaluronic acid fraction and a high molecular weight hyaluronic acid fraction.
Patent SG-11201908791S-A (SG)
Title: Etchant composition for etching titanium layer or titanium-containing layer, and etching method
Inventor: SASAKI RYOU
IPC: H01L21/336
Filed: 2018-03-30
Abstract: Provided are: an etchant composition for titanium or titanium alloy, the etchant composition being used for selectively etching a titanium layer or titanium-containing layer formed on an oxide semiconductor layer; and an etching method using said etchant composition. The etchant composition according to the present invention, which is used for etching a titanium layer or titanium-containing layer on an oxide semiconductor, comprises: a compound containing ammonium ions; hydrogen peroxide; and a basic compound, wherein the etchant composition has a pH of 7-11. [No suitable figure]
Patent IS-2440-B (IS)
Inventor: EIJOLFSSON REYNIR
IPC: A61P9/14
Filed: 2004-08-11
Abstract: Stable formulations of ACE-inhibitors compounds such as quinapril can be produced with the use of excipients comprising a basic compound, preferably an alkali-oralkaline earth metal carbonate, and an insoluble alkaline-earth metal carbonate, and an insoluble alkaline-earth metal hydrogen phosphate. Tablets of such formulations have good storage stability, dissolution characteristics, and the formulations are suitable for use in drug combinations.
Patent AT-410344-B (AT)
Title: Frame dismantler
IPC: E04G23/08
Filed: 1999-02-02
Granted: 2003-03-25
Abstract: The frame dismantler is a device for breaking off door and window frames, etc., with which the respective frames are pulled apart until they break. For this, the load engaging devices (8, 11) are fixed to two sides if the door or window frame. These are connected by chains (7) and flexible tension means (4, 8), which are guided over a deflection device of 90 degrees, and furthermore via a tension means fastening member (3) to the cylinder/piston unit. By extending the cylinder/piston unit (1), which is driven by a hydraulic pump (9), the frame is pulled apart until it breaks. The frame parts may thereafter easily be removed from the wall.<IMAGE>
Patent AT-402472-B (AT)
IPC: A47L13/46
Filed: 1992-02-11
Granted: 1997-05-26
Abstract: A device for the releasable attachment of a cleaning implement, such as a brush (3), between two jaws (11, 21) or the like which can be moved towards one another. In this case, the two jaws (11, 21) or the like, which are connected to one another so that they can spring apart elastically, are penetrated by a bolt (6) constructed with a pivoting arm (5), in which case they can be clamped with the cleaning implement (3) in a first position of the pivoting arm (5), whereas they spring apart in a second position of the pivoting arm (5), as a result of which the cleaning implement (6) can be released from said jaws or inserted between them. <IMAGE>
Patent AT-407151-B (AT)
IPC: C02F3/00
Filed: 1997-04-14
Granted: 2001-01-25
Abstract: Purification of ammoniacal waste liquor (I) in tanks comprises nitrification and denitrification, in which the pH is monitored continuously and is changed by adding aqueous alkali solution (II) during aeration so that it falls as a result of nitrification and rises again after aeration is stopped as a result of denitrification and addition of more (II), if necessary, after which aeration is re-started. One tank is used for consecutive aeration, sedimentation and discharge of pure water and the pH is increased from ≥ 7.0 to ≤ 8.0 during the aeration phase and reduced to < 6.9 (preferably < 6.7) at the end of the aeration phase.
Patent AT-410358-B (AT)
Inventor: ANDLER GERD
IPC: F16C33/14
Filed: 1999-05-27
Granted: 2003-04-25
Abstract: A half bearing has a backing member and at least one metallic overlay, which is applied by electron beam vapor deposition and which comprises at least one finely dispersed component in a matrix material, the atomic weight of which component is greater than that of the matrix material, wherein the concentration of the finely dispersed component (7) decreases continuously from the apex area (8) of the half bearing (1) towards the area (9) of the partial surfaces. The method is characterized in that, during the coating process, an inert gas pressure of 0.1 to 5 Pa is set in the apex area of the bearing shell.
Patent HU-190704-B (HU)
Inventor: HIDEG KALMAN
IPC: A61K31/40
Filed: 1983-01-21
Abstract: A találmány tárgya eljárás l általános képletű diamidok - ahol A jelentése 1-4 szénatomos alkilén-cso- 5 port, amely hidroxilcsoporttal helyettesített lehet, B jelentése egyes vagy kettős kötés. R2 jelentése adott esetben egy vagy több 1-4 szénatomos alkiloxi-csoport- 10 tál, 2-5 szénatomos alkenil-oxi-csoporttal, halogénatommal, trifluor-metil-csoporttal, (1-4 szénatomos alkil)-karbonil-amino-csoporttal, karbamoil—(1—4 szénatomos) alkoxi-csoporttal 15 trifluor-metil-csoporttal, vagy benziloxi-csoporttal helyettesített fenil-csoport, vagy tienilcsoport, pirrolilcsoport, furilcsoport, piridiiesoport R3 jelentése hidrogénatom, vagy 1-4 20 szénatomos alkilcsoport - és sóik előállítására, oly módon, hogy valamely II általánoe képletű amint - ahol A jelentése a fenti és B1 jelentése egyes vagy kettős kötés - 25 valamely III általános képletű oxo-vegyülettel - ahol R2 és R3 jelentése a fenti kondenzálunk, majd a kapott IV általános képletű Schiff-bázist - ahol A, B1, R2 és R3 jelentése a fen- '1 - "edukáljuk, majd a termékből kívánt esetben üót képezünk.  Pü - o-c-?: P 'i - C ii I 190704 -1-
Patent HU-181067-B (HU)
Inventor: LANDA VACLAV
IPC: H01F7/02
Filed: 1980-03-12
Abstract: Die Erfindung gibt eine Loesung fuer anisotrope Dauermagnete mit einer magnetischen Struktur, die die magnetische Induktion erhoeht, welche in einem Luftspalt oder in anderen Teilen des magnetischen Kreises erzeugt wird. Das Wesen der Erfindung besteht darin, dass der Magnet eine inhomogene magnetische Struktur besitzt, deren Orientierung im Bereich der Funktionalflaeche mindestens eines Pols konvergierend, gerad- oder krummlinig ist und fortlaufende oder stufenweise Richtungsaenderungen aufweist.
Patent HU-198018-B (HU)
Title: Process for producing new 1,2,5,6-tetrahydropyridine-3-carboxaldehyd-oxim derivatives
Inventor: GALLIANI GIULIO
IPC: A61K31/445
Filed: 1987-02-26
Abstract: Compounds useful in the treatment of Alzheimer's disease, senile dementia, or memory disorders which have the formula   <IMAGE>   in which R represents a hydrogen atom, a linear, branched or cyclic alkyl radical, saturated or unsaturated, containing up to 8 carbon atoms, possibly substituted by a free or esterified carboxy radical or R represents an aralkyl radical containing up to 10 carbon atoms and R' represents a linear or branched, saturated or unsaturated, alkyl radical, containing up to 8 carbon atoms, a radical -COalk1 or a radical -(CH2)2N(alk2)2, alk1 and alk2 representing an alkyl radical containing up to 8 carbon atoms, as well as their addition salts with acids. Also compositions containing the same, method of preparation and method of treatment using the same.