baber/WOPTO huggingface dataset:
Patent JP-H01179713-A (JP)
Title: Carbon black for electrode
Inventor: MIZUTANI SUSUMU
IPC: C01B31/04
Filed: 1988-01-07
Abstract: PURPOSE:To improve oxidation resistance at high temp. of an electrode without impairing electroconductivity of the electrode by decomposing thermally a mixture of a specified polymer, a bituminous material, and carbon black having high specific surface area. CONSTITUTION:1-30wt.% polyvinyl chloride, polystyrene, or ABS resin, and a bituminous material carbonized at >=1,000 deg.C are mixed with carbon black having pref. 120-550m<2>/g specific surface area, 10-28mmu primary particle size, and >=99.9% purity of C, and the mixture is heat-treated in nonoxidizing atmosphere at >=1,000 deg.C, pref. 1,000-1,600 deg.C. The carbon black produced by this method has 100-500m<2>/g specific surface area, <=30mmu primary particle size, and >=99.9% purity of C, high electroconductivity and high durability against thermal oxidation. Accordingly, the material is useful as the title material.
Patent JP-S60158197-A (JP)
Inventor: MARUTSUCHI RAURI ANTERO MARUBO
IPC: A61P31/04
Filed: 1985-01-07
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-S59126189-A (JP)
Inventor: MIZUTANI CHIKAKO
IPC: F16L11/12
Filed: 1983-01-06
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-S5386198-A (JP)
Title: Gas detector
Inventor: EGUCHI YOUICHI
IPC: G08B17/10
Filed: 1977-01-08
Abstract: PURPOSE: To reduce the effect of atmospheric air and make possible heating a metal thin-film at a constant temperature by mutually insulating and forming a heating element thin-film and a gas detecting metal thin-film on an insulator base plate. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent MA-39590-A (MA)
Title: Energy conversion device
Inventor: Juhász János 
IPC: H01Q17/00
Filed: 2014-11-17
Abstract: The present invention relates to energy conversion device. The characteristic features of the invention are that the cable (20) connecting the collection unit (10) and the conversion unit (30) to each other is made from a metal alloy containing a maximum of 0.7 mass% gold, a maximum of 0.7 mass% silver, between 2-8 mass% iron and at least 90 mass% bronze components, and the cable (20) has at least two bending zones (23), where the normal (21a) to the initial section (21) of the cable (20) entering the bending zone (23) and the normal (22a) to the exit section (22) of the cable (20) leaving the bending zone (23) are at an angle (a) of at least 10° to each other, the organic component of the charge (40) contains a maximum of 50 v/v% regenerating type microorganism group, while the inorganic component of the charge (40) contains at least 5 v/v% of a gold-bronze powder mixture, the condenser part-unit (32) is connected to an earth cable (50), and when the device is in its use position the first armoured plate (32a) of the condenser part- unit (32) is connected to the electrically conducting body (1) belonging to the environment via the earth cable (50) when the energy conversion device is in its use position, and the second armoured plate (32a') of the condenser part-unit (32), beside the cable (20), is in an electrically conducting connection with the charge (40).
Patent MA-44642-A (MA)
Title: Lactobacillus rhamnosus destiné à être utilisé dans la préparation de produits fermentés
Inventor: CHRISTOPHE DAVAL
IPC: A23C9/123
Filed: 2016-04-14
Abstract: La présente invention concerne une nouvelle souche de lactobacillus rhamnosus, des compositions comprenant ladite souche et des procédés de préparation de telles compositions.
Patent PH-21174-A (PH)
Title: Substituted t-butanol fungicidal agents
Inventor: ERIK REGEL
IPC: C07D233/60
Filed: 1984-03-29
Abstract: A method of combating plant pathogenic fungi which comprises administering to such fungi or to a habitat thereof a plant pathogenic fungicidally effective amount of a substituted tert.-butanol derivative of the formula    <IMAGE>  (I)  in which R1, R2 and R3 are identical or different and represent azolyl, optionally substituted phenoxy, optionally substituted phenylthio, alkylthio, alkenyl, alkinyl, optionally substituted phenylacetylenyl, alkylamino, dialkylamino, optionally substituted phenylamino, optionally substituted phenyl-N-alkyl-amino, optionally substituted cycloalkylamino, optionally substituted cycloalkyl-N-alkyl-amino, aminoethoxy, alkylaminoethoxy or dialkylaminoethoxy, or an acid addition salt or metal salt complex thereof.
Patent PH-22290-A (PH)
Title: Sonic apparatus and method for detecting the presenc of a gaseous substance in a closed space
Inventor: ROSS BOWER JOHN
IPC: G08B21/00
Filed: 1984-12-18
Abstract: A method of and apparatus for detecting the presence of a gaseous substance within a space (12) bounded by an enclosure (10) utilises the fact that sound is not transmitted through a vacuum and is transmitted through the material of the enclosure (10). A sonic wave transmitter (2) and a sonic wave receiver (4) are engaged with the material of the enclosure (10) and separated by the space (12). Using calculated arrival times and/or amplitudes for soundwave portions travelling through the space (12) and through the material of the enclosure (10), it can be determined whether a soundwave portion has passed through the space (12) and thus a leakage of gaseous substance into the space (12) above a threshold amount has taken place.
Patent PH-22359-A (PH)
Title: Gnrh antagonists ix
Inventor: FREDERIC RIVIER JEAN EDOUARD
IPC: C07K14/575
Filed: 1986-05-07
Abstract: Peptides which inhibit the secretion of gonadotropins by the pituitary gland and inhibit the release of steroids by the gonads. Administration of an effective amount of such GnRH antagonists prevents ovulation of female mammalian eggs and/or the release of steroids by the gonads. These peptides may be used to treat steroid-dependent tumors, such as prostatic and mammary tumors. The peptides are cyclic analogs of the decapeptide GnRH wherein there is a covalent bond between the residue in the 4-position and the residue in the 10-position. Examples of such bonds include the disulfide linkage between Cys residues, an amide linkage between a side chain amino group and a side chain carboxyl group, a dicarba linkage between side-chain alkyl groups, and a carba linkage between a side-chain alkyl group and a side-chain sulfhydryl group.
Patent PH-25423-A (PH)
Title: Method of treating bacterial infections using benzoxazine carboxylic acid
Inventor: DOMAGALA JOHN MICHAEL
IPC: C07D471/04
Filed: 1989-04-03
Abstract: Novel naphthyridine-, quinoline- and benzoxazinecarboxylic acids of formula <CHEM> in which Z is <CHEM> are disclosed. The co mpounds are useful as antibacterial agents. Also disclosed is a process for producing the compounds and a pharmaceutical composition comprising the compounds.
Patent PH-30458-A (PH)
Title: Carboxylic acid derivatives
Inventor: MAIENFISCH PETER
IPC: C07C69/96
Filed: 1993-06-24
Abstract: Compounds of the formula <IMAGE>  in which     A denotes oxygen, sulphur or -NR1-;   B denotes C2-C6-alkylene; D-E denotes -O-E, -S-E, -O-CH2-E, -O-C(=O)-E, -O-C(=O)-O-E, -O-C(=O)-N(H)-E or -O-C(=S)-N(H)-E; E denotes phenyl; phenyl substituted by 1 to 3 substituents; a five-membered aromatic heterocycle having one to three hetero atoms; a five-membered aromatic heterocycle having one to three hetero atoms and substituted by one or two substituents; a six-membered aromatic heterocycle having one to three nitrogen atoms; or a six-membered aromatic heterocycle having one to three nitrogen atoms and substituted by one or two substituents;   L denotes halogen or methyl;   X denotes fluorine;   Y denotes chlorine or fluorine;   Z denotes hydrogen, fluorine or methyl;   m denotes the number zero, one, two, three, four or five;   n denotes the number zero, one or two and   R1 denotes hydrogen, C1-C4-alkyl, phenylthio or tolylthio, in free form or in salt form, can be used as pesticides and can be prepared in a manner known per se.
Patent TR-24722-A (TR)
IPC: C04B35/65
Filed: 1987-09-03
Abstract: A method is disclosed for producing a ceramic body by oxidation of a parent metal, the ceramic body having a graded microstructure characterized by a plurality of zones differing from each other in one or more properties. The zones in the ceramic body are attained by altering the process conditions during formation of said ceramic body such that a zone of the oxidation reaction product formed posterior to said altering has one or more properties different from a zone of the oxidation reaction product formed anterior to said altering.
Patent UY-32857-A (UY)
Title: Sistema de movimiento de carga de doble cableado
Inventor: PIGINI RODRIGO PRADO
IPC: B65G1/04
Filed: 2010-08-26
Abstract: Se refiere a la invención de un sistema de movimiento de carga por cable (13), instalado en el interior de un carenaje con estructura paralelamente s imétrica de laterales principales (06,07) ; un conjunto mecánico de engranaje de cable (13), caracterizado por el eje piñón (03), acoplado al reductor (08) y motor freno (09), de forma perpendicular a los laterales (06,07) del carenaje, a través del armazón intermediario de acoplamiento (01); los cables que entran a través de los tubos guía (10,11) son guiados por las coronas (02) y el eje piñón (03), con el ángulo de envolvimiento individual de 870° (ochocientos setenta grados), colocados en los canales de las superficies de las coronas (02), externando el conjunto de engranaje por el tubo guía (12); una estructura divisora (05) garantiza el sellado del traccionamiento del conjunto, separando el tren de traccionamiento del cable (13) del tren de enrollamiento del cable (13).
Patent UY-34076-A (UY)
Title: Composición farmacéutica que contiene volasertib en dosificación mejorada y sus usos contra tumores sólidos avanzados
Inventor: TILLMANN TAUBE
IPC: A61K33/243
Filed: 2012-05-17
Abstract: La presente invención se refiere al uso de Volasertib o una sal del mismo o un hidrato del mismo en combinación con Cisplatino o Carboplatino o una sal de los mismos o un hidrato de los mismos para tratar pacientes que sufren de tumores sólidos avanzados y/o metastásicos .
Patent UY-34362-A (UY)
Title: Compuestos herbicidas, composiciones que lo comprenden, uso para controlar malezas en cultivos?.
Inventor: YUNAS BHONOAH
IPC: A01N43/48
Filed: 2012-10-03
Abstract: La presente invención proporciona un compuesto de  fórmula (I):  (I)  o una de sus sales agronomicamente aceptables, donde:-  R2 se selecciona del grupo compuesto por A1, A2 y A3  (AI) (A2) (A3) donde  X1 es N o CR7;  X2 es N o CR8;  X3 es N o CR9;  X4 es N o CR6;  R1, R3, R4, R5, R6, R7, R8 y R9 son como se definen en la presente. La invención ta mbién se refiere a composiciones herbicidas que c omprenden un compuesto de fórmula (I) y a su uso  para controlar malezas, en particular en cultivos  de plantas útiles.
Patent UY-35003-A (UY)
Title: Nanopartícula polimérica de finasterida, suspensión acuosa conteniendo a la misma, composición para tratamiento de alopecia,proceso de preparación de dicha composición, y su uso
Inventor: POHLMANN ADRIANA RAFFIN
IPC: A61K9/127
Filed: 2013-08-30
Abstract: La presente invención tiene el objetivo de proporcionar una composición farmacéutica para el tratamiento de la alopecia, dicha composición contiene nanopartículas poliméricas, preferencialmente nanocápsulas, conteniendo finasterida, aditivos y vehículo farmacéuticamente aceptables, así como el uso de las nanopartículas para preparar dicha composición para el tratamiento de la alopecia. La invención incluye además un proceso de preparación de nanocápsulas de finasterida apropiadas para una composición de vehículo tópico para el tratamiento de la alopecia.
Patent UY-36880-A (UY)
Title: Moléculas con utilidad plaguicida, e intermedios, composiciones y procesos relacionados con las mismas
Inventor: GARY D CROUSE
IPC: C07D417/12
Filed: 2016-09-02
Abstract: Esta invención se refiere al campo de las moléculas que tienen utilidad plaguicida contra plagas en Filos Artrópodos, Moluscos y Nematodos, procedimientos para producir dichas moléculas, intermedios utilizados en dichos procedimientos, composiciones plaguicidas que contienen dichas moléculas, y procedimientos que utilizan dichas composiciones plaguicidas contra las plagas. Estas composiciones plaguicidas pueden utilizarse, por ejemplo, como aficidas, insecticidas, acaricidas, molusquicidas y nematicidas. Este documento revela moléculas que tienen la siguiente formula ( “Fórmula Uno” ) .
Patent UY-37870-A (UY)
Title: Inhibidores de kras g12c y métodos para utilizarlos campo de la invención
Inventor: 1728 BRIAN ALAN LANMAN
IPC: C07D471/04
Filed: 2018-09-07
Abstract: En la presente, se proveen inhibidores de KRAS G12C, composiciones de estos y métodos para su uso. Dichos inhibidores son útiles para el tratamiento de múltiples trastornos, los que incluyen cáncer pancreático, colorrectal y pulmonar.
Patent UY-38078-A (UY)
Title: Composición de un lubricante y método para su preparación
Inventor: RODGER SCOTT RIEFLER
IPC: A61Q90/00
Filed: 2019-02-07
Abstract: Se presenta un método para preparar una composición lubricante La composición lubricante incluye una emulsión de THC, emulsión de CBD, agua, terpenos y un agente espesante. La emulsión de THC, emulsión de CBD, agua, terpenos de cannabis y agente 5 espesante se combinan como un lubricante.
Patent UY-38788-A (UY)
Title: Fenilpiridazina/piridazinona-dionas sustituidas, su fabricación y uso como herbicidas
Inventor: MATHEWS CHRISTOPHER JOHN
IPC: A01N43/58
Filed: 2020-07-16
Abstract: La presente invención se refiere a fenilpiridazinadionas sustituidas y derivados de fenilpiridazinona sustituidos de fórmula (I) herbicidas, así como también a los procesos e intermedios utilizados para la preparación de tales derivados. La invención se refiere además a composiciones herbicidas que comprenden tales derivados, así como también al uso de tales compuestos y composiciones en el control del crecimiento de plantas no deseadas: en particular al uso en el control de malezas, tales como malezas dicotiledóneas latifolias, en cultivos de plantas útiles.
Patent YU-17499-A (YU)
Inventor: NERURKAR MANEESH J
IPC: A61K9/00
Filed: 1999-03-31
Abstract: Tečna formulacija alendronske kiseline, ili farmaceutski prihvatljive soli ima dovoljno pufera tako da je pH formulacije 4-7.5, i 15 ml formulacije je sposobno da poveća pH 50 ml 0.1N HCl do najmanje 3, a prvenstveno 4.
Patent YU-18999-A (YU)
Title: Substituted tricyclics
Inventor: ALAN ANDERSON BENJAMIN
IPC: A61P1/00
Filed: 1999-04-16
Abstract: This invention refers to new substituted tricyclic organic compounds suitable for inhibiting SPLAs intermediates released from fat acids in the condition such as a septic shock of a formula (II) where Z represents cyclohexyl or phenyl, R 21 is noninterraguing substituent, R1 is -NHNH2, or -NH2; R2 is chosen from groups containing -OH and -O(CH2)mR5 where R5 H, -CO2H, -CONH2, - CO2 (C1-C4 alkyl); R3 is H, - O(C1-C4)alkyl halogen, -(C1-C6)alkyl, phenyl, (C1-C4), alkylphenyl, phenyl substituted with (C1-C6) alkyl, halogen, or -CF3; -CH2OSi (C1-C6) alkyl, furyl, tiophenyl, - (C1-C6) hydroxyalkyl and its pharmaceutically acceptable racemat, solvate, tautomere, optical isomere procurative derivate or salt.
Patent YU-19289-A (YU)
Title: Adresar- kalendar
Inventor: DORDEVIC Z
Filed: 1989-01-27
Abstract: ADRESAR- KALENDAR je plastična kutija sastavljena iz poklopca (1) i postolja (2) u koju je smešten adresar (9). Poklopac ima tri kanala (K) u kojim su umetnuti pokazivači u obliku jahača (3,3A, 3B i 3C), koji su pravougaonog oblika sa poprečnim hvataljkama u vidu strelice, a sa donje strane imaju po dva klina koji upadaju u kanal (K) i sa donje strane poklopca (1) pričvršćeni su pravougaonim pločicama (4), koje imaju po dva otvora u koja ulaze klinovi koplanjem, a sa jedne strane imaju krak (4A) sa polukružnim ispupčenjem, koje elastično čegrlja po poprečnim žljebovima (Ž) sa donje strane poklopca (1) i upada u njih kada se zaustavi, čime se postiže tačno pokazivanje i stabilno držanje na izabranoj poziciji etiketa (13 i 14).
Patent YU-28391-A (YU)
Title: Hidrociklon sa indirektnim dovodom radnog fluida
Inventor: RANDJIC R D
Filed: 1991-02-18
Abstract: HIDROCIKLON SA INDIREKTNIM DOVODOM RADNOG FLUIDA, je nova konstrukcija procesnog uredjaja koji ima indirektan i poseban dovod radnog fluida za klasiranje. Indirektan dovod radnog fluida se vrši kroz tangencijalnu cev (2) u vrtložnu komoru (5) na cilindričnom delu (6) hidrociklona. Strujanje radnog fluida se preko vrtložne komore (5) prenosi na suspenziju u cilindričnom i konusnom delu hidrociklona, gde se stvara vrtložno centrifugalno polje u kome istaložene čestice i zrna odlaze kroz otvor za pesak, a sitnije čestice se preko prelivne cevi (3) i prelivne komore (10) izdvajaju iz hidrociklona. Uvodjenje ulaznog materijala koji se klasira u hidrociklonu vrši se preko uvodnog suda, kroz prstenasti prostor izmedju cilindričnog dela hidrociklona i prelivne komore, posebno i nezavisno od dovoda radnog fluida koji se vrši kroz tangencijalnu cev i vrtložnu komoru.
Patent YU-56995-A (YU)
Title: Soli derivata indola
Inventor: HARDING
IPC: A61P25/24
Filed: 1995-08-25
Abstract: Pronalazak se odnosi na alfa-polimorfne oblike jedinjenja formule (I): na proces njegove pripreme, na intermedijerni beta-polimorfni oblik i na farmaceutske kompozicije i njegovu terapeutsku upotrebu.
Patent AT-A202786-A (AT)
Inventor: RITTER GERHARD DIPL ING DR
IPC: B21D43/02
Filed: 1986-07-28
Abstract: In an apparatus for feeding self-hardening hot rolled wires from supply reels to a consumer and for straightening the wires, in each feed path there is a rotor-type straightening device (3) with a straightening rotor (3b) deflecting the wire (1) radially between two fixed wire guides (3a) and rotating at high speed; the wire forms loops (12, 16), in front of and behind the rotor-type straightening device (3), the front loop (12) having assigned to it a sensing means (5, 8, 10) which switches off the rotor-type straightening device (3) when the length of this loop falls below a minimum value, while assigned to the rear loop (16) are two switches (18, 19) which, when a maximum or a minimum permitted length of this loop is reached, control the rotor-type straightening device (3) so as to correct the loop length.
Patent BE-809084-A (BE)
Title: Varnish compsn useful for insulators, adhesives etc - contg polystyrene, aromatic hydrocarbon diluent and white spirit
IPC: C09D125/00
Filed: 1973-12-27
Abstract: A base for a varnish compsn. comprises (a) synthetic or cellulosic extender based on toluene or its derivs, benzene and/or acetone, (b) a polystyrene and (c) white spirit. The compsn is used as such or modified with colourants and fillers to give varnishes which are resistant to acids, heat, shock and chemicals.
Patent BE-883222-A (BE)
Inventor: GAAL A
IPC: C07F9/38
Filed: 1980-05-09
Abstract: The invention provides a process and the product of process for the preparation of N-phosphonomethyl-glycine comprising the oxidation of an aqueous suspension of N-phosphonomethyl-imino diacetic acid in the presence of a catalyst with oxygen or an oxygen-containing gas. Comparing the process of the invention with the known processes, specific conversion is considerably increased and significant amounts of energy can be saved.
Patent BE-898302-A (BE)
Title: Dispositif de controle d'une marche synchrone.
Inventor: JOST G
IPC: G07C3/00
Filed: 1983-11-24
Abstract: Dispositif de controle d'une marche synchrone de prismes de métiers Jacquard, caractérisé en ce qu'un organe d'actionnement de déclencheur est relié de manière fixe à l'arbre de prisme 4, en ce qu'un organe d'actionnement de déclencheur est adjoint de manière fixe à chaque fois une arete latérale de prisme et en ce qu'au moins trois déclencheurs 7 sont prévus pour un prisme 5 présentant cinq ou six aretes.
Patent BE-901390-A (BE)
Title: Nouvelles compositions cosmetiques ou dermatologiques pour les soins de la peau.
IPC: A61Q19/00
Filed: 1984-12-27
Abstract: L'invention concerne de nouvelles compositions cosmétiques ou dermatologiques pour la peau, caractérisées en ce qu'elles renferment de l'huile d'onagre associée à des extraits tissulaires de rate. Ces compositions sont destinées notamment à retarder les signes de vieillissement de le peau.
Patent BE-902032-A (BE)
Title: Mecanisme de positionnement.
Inventor: VANCELETTE S R
IPC: H05K13/04
Filed: 1985-03-27
Abstract: Le mécanisme de positionnement, notamment pour des composants micro-électroniques sur une carte de circuits imprimés, comporte essentiellement une broche (36) mobile le long d'un axe vertical et pouvant tourner autour de cet axe pour aligner les conducteurs d'un composant avec des surfaces conductrices de cartes de circuits imprimés. La broche supporte une tige de positionnement (40) qui communique avec une source de dépression pour prélever le composant et le positionner sur la carte. La tige de positionnement est accouplée élastiquement avec la broche pour s'adapter à des hauteurs de cartes variables et amortir le choc de positionnement.
Patent BE-903463-A (BE)
Title: Procede pour la microencapsulation par separation de phases de substances medicamenteuses hydrosolubles
IPC: A61K9/36
Filed: 1985-10-17
Abstract: On procède à la microencapsulation par séparation de phases de substances médicamenteuses hydrosolubles. Les opérations de l'étape de durcissement se déroulent à une température comprise entre env. 0 et env. 25 degrés C, le non-solvant utilisé lors de cette étape étant un hydrocarbure aliphatique fluoré ou fluorohalogéné ou un mélange de tels hydrocarbures. Le non-solvant est en outre utilisé en excès par rapport au volume de solvant et non-solvant provenant de l'étape de séparation de phases.
Patent BE-903661-A (BE)
Title: Appareil et procede pour peser des objets.
Inventor: DOERMAN E S
IPC: G01B7/00
Filed: 1985-11-18
Abstract: Les objets 9 sont projetés avec une vitesse horizontale connue sur une rampe 2 qui présente une surface dont la courbure s'étend sur 90 degrés, cette rampe 2 pouvant se déplacer horizontalement en réponse à l'impulsion correspondant au changement dans le moment horizontal de l'objet 9, un transducteur 5 détecte le déplacement de la rampe 2 et un dispositif 23,24 détecte la vitesse horizontale de sortie de l'objet 9 en permettant le calcul du changement de vitesse horizontale, la masse de l'objet 9 étant calculée à partir du déplacement horizontal de la rampe 2 et du changement de vitesse horizontale de l'objet 9. L'appareil est destiné à peser des objets en succession et en particulier en succession rapide.
Patent BE-905409-A (BE)
Title: Procede de preparation de n-sulfamyl-3-(2-guanidino-thiazol-4-yl-methylthio)-propionamidine.
IPC: C07D277/48
Filed: 1986-09-10
Abstract: Nouveau procédé de préparation de N-sulfamyl-3- (2-guanidino-thiazol-4-yl-méthylthio) -propionitrile (framotidine) de formule ci-dessous par S-alkylation de 2-guanidino-thiazol-4-yl-méthane-thiol obtenu à partir de dihydrochlorure de S- (2-guanidino-thiazol-4-yl-méthyl) -isothiourée par traitement in situ avec une base, caractérisé en ce qu'on effectue la S-alkylation avec une N-sulfamyl-3-halo-propionamidine.
Patent BE-905484-A (BE)
Title: Panneaux d'isolation acoustique.
IPC: E04C2/24
Filed: 1986-09-24
Abstract: Panneaux pour l'isolation acoustique de batiments. Ces panneaux sont constitués d'un feutre de fibres minérales enveloppé dans un film tendu sur le feutre sans adhérer à celui-ci. L'enveloppe, à base de polychlorure de vinyle présente une masse par unité de surface comprise entre 10 et 30 g/m2 et le feutre présente une masse volumique comprise entre 30 et 100 kg/m3. Le coefficient d'absorption acoustique Alpha-Sabine des panneux selon l'invention (I) est pratiquement identique à celui non enveloppé (II) et ceux-ci présentent de nombreux avantages dans leur utilisation.