MX212300B - Sales de quitosana y proceso para la preparacion de las mismas - Google Patents
Sales de quitosana y proceso para la preparacion de las mismasInfo
- Publication number
- MX212300B MX212300B MX9704660A MX9704660A MX212300B MX 212300 B MX212300 B MX 212300B MX 9704660 A MX9704660 A MX 9704660A MX 9704660 A MX9704660 A MX 9704660A MX 212300 B MX212300 B MX 212300B
- Authority
- MX
- Mexico
- Prior art keywords
- preparing
- chitosan salts
- chitosan
- salts
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
- C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/28—Polysaccharides or their derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Dispersion Chemistry (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Cosmetics (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Paper (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/362,395 US5599916A (en) | 1994-12-22 | 1994-12-22 | Chitosan salts having improved absorbent properties and process for the preparation thereof |
PCT/US1995/016191 WO1996020015A2 (en) | 1994-12-22 | 1995-12-14 | Chitosan salts and process for the preparation thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
MX9704660A MX9704660A (es) | 2000-04-30 |
MX212300B true MX212300B (es) | 2002-12-19 |
Family
ID=23425957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9704660A MX212300B (es) | 1994-12-22 | 1995-12-14 | Sales de quitosana y proceso para la preparacion de las mismas |
Country Status (21)
Country | Link |
---|---|
US (1) | US5599916A (es) |
EP (1) | EP0799247B1 (es) |
JP (1) | JPH10511720A (es) |
KR (1) | KR100412190B1 (es) |
AR (1) | AR000398A1 (es) |
AU (1) | AU689692B2 (es) |
CA (1) | CA2208892A1 (es) |
DE (1) | DE69527370T2 (es) |
EG (1) | EG21032A (es) |
FR (1) | FR2728575B1 (es) |
GB (1) | GB2296250B (es) |
MX (1) | MX212300B (es) |
MY (1) | MY113109A (es) |
PE (1) | PE12597A1 (es) |
PH (1) | PH11995051943B1 (es) |
SV (1) | SV1995000091A (es) |
TR (1) | TR199501616A2 (es) |
TW (1) | TW323286B (es) |
UY (1) | UY24123A1 (es) |
WO (1) | WO1996020015A2 (es) |
ZA (1) | ZA9510740B (es) |
Families Citing this family (86)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5874551A (en) * | 1996-05-29 | 1999-02-23 | Center For Innovative Technology | Method of making ester-crosslinked chitosan support materials and products thereof |
DE19643066C2 (de) * | 1996-10-18 | 1999-07-01 | Henkel Kgaa | Kollagenfreie kosmetische Zubereitungen und Verfahren zu ihrer Herstellung |
US5770712A (en) * | 1997-03-14 | 1998-06-23 | Virginia Tech Intellectual Properties, Inc. | Crosslinked hydrogel beads from chitosan |
AU7908798A (en) * | 1997-07-02 | 1999-01-25 | Coloplast A/S | A method for preparing a non-fibrous porous material |
US6197322B1 (en) * | 1997-12-23 | 2001-03-06 | Kimberly-Clark Worldwide, Inc. | Antimicrobial structures |
HUP0103483A3 (en) | 1998-06-29 | 2004-12-28 | Procter & Gamble | Absorbent article including a reducing agent for feces |
US6018093A (en) * | 1998-06-29 | 2000-01-25 | The Procter & Gamble Company | Absorbent article including a calcium-based feces modification agent |
US5998695A (en) * | 1998-06-29 | 1999-12-07 | The Procter & Gamble Company | Absorbent article including ionic complexing agent for feces |
BR9911748A (pt) * | 1998-06-29 | 2001-04-03 | Procter & Gamble | Artigo absorvente, inserto para ser colocado em uma peça de vestuário do usuário, artigo descartável e processo para aumentar a capacidade de remoção de excreções corpóreas da pele de um usuário |
ATE268124T1 (de) * | 1998-07-30 | 2004-06-15 | Vital Living Inc | Flüssige chitosan-enthaltende zusammensetzungen und verfahren zur herstellung und verwendung |
US6607035B1 (en) | 1998-12-04 | 2003-08-19 | Halliburton Energy Services, Inc. | Preventing flow through subterranean zones |
DE19913478C1 (de) * | 1999-03-25 | 2000-07-20 | Hartmann Paul Ag | Stilleinlage |
DE19932075A1 (de) * | 1999-07-12 | 2001-01-18 | Cognis Deutschland Gmbh | Vernetzerfreie Zubereitungen |
AU7645100A (en) | 1999-10-07 | 2001-05-10 | Coloplast A/S | Wound care device |
US20030206958A1 (en) * | 2000-12-22 | 2003-11-06 | Cattaneo Maurizio V. | Chitosan biopolymer for the topical delivery of active agents |
GB2358637A (en) * | 2000-01-27 | 2001-08-01 | Btg Int Ltd | Chitosan condensation products with a bisulphite addition compound |
EP1149596A1 (en) † | 2000-04-25 | 2001-10-31 | The Procter & Gamble Company | Absorbent articles comprising a cationic polysaccharide and silicate |
US6867287B2 (en) * | 2000-04-25 | 2005-03-15 | The Procter & Gamble Company | Breathable absorbent articles comprising chitosan material |
US6833487B2 (en) * | 2000-04-25 | 2004-12-21 | The Procter & Gamble Company | Articles comprising a cationic polysaccharide and silica |
EP1149597A1 (en) * | 2000-04-25 | 2001-10-31 | The Procter & Gamble Company | Breathable absorbent articles comprising chitosan material |
US6844430B2 (en) * | 2000-04-25 | 2005-01-18 | The Proctor & Gamble Company | Articles comprising cationic polysaccharides and acidic pH buffering means |
EP1149593A1 (en) * | 2000-04-25 | 2001-10-31 | The Procter & Gamble Company | Articles comprising cationic polysaccharides and acidic pH buffering means |
JP3958536B2 (ja) * | 2000-07-12 | 2007-08-15 | 大日精化工業株式会社 | 水性溶液組成物および物品の表面改質方法 |
KR100315381B1 (ko) | 2000-07-18 | 2001-11-26 | 김영준 | 키토산 마이크로플레이크와 그 제조방법 |
US20030040728A1 (en) * | 2001-02-20 | 2003-02-27 | Shih-Chiang Lin | Absorbing article for skin care and antibiotic and manufacture method thereof |
EP1247819A1 (en) * | 2001-04-04 | 2002-10-09 | Dainichiseika Color & Chemicals Mfg. Co. Ltd. | Purified chitins and production process thereof |
US7217804B2 (en) * | 2001-04-24 | 2007-05-15 | The Procter & Gamble Company | Articles comprising cationic polysaccharides and acidic pH buffering means |
US6673263B2 (en) * | 2001-07-26 | 2004-01-06 | Ppg Industries Ohio, Inc. | Compositions incorporating chitosan for paint detackification |
US20040000329A1 (en) * | 2001-07-26 | 2004-01-01 | Albu Michael L. | Compositions and methods for paint overspray removal processes |
NO20015986D0 (no) | 2001-08-02 | 2001-12-06 | Einar J Mustaparta | Produktet chitosan, samt fremstillingsmetode og anvendelse av chitosan |
US20040166307A1 (en) * | 2001-08-24 | 2004-08-26 | The Procter & Gamble Company | Absorbent member with improved fluid handling agent |
EP1287837B1 (en) * | 2001-08-24 | 2006-05-10 | The Procter & Gamble Company | Absorbent article with film-like region of chitosan material and process for making the same |
US20040167487A1 (en) * | 2001-08-24 | 2004-08-26 | The Procter & Gamble Company | Absorbent article with film-like region of chitosan material and process for making the same |
US6500947B1 (en) * | 2001-08-24 | 2002-12-31 | Weyerhaeuser Company | Superabsorbent polymer |
EP1287836B1 (en) * | 2001-08-24 | 2009-02-18 | The Procter & Gamble Company | Absorbent member with improved fluid handling agent |
EP1287835A1 (en) * | 2001-08-24 | 2003-03-05 | The Procter & Gamble Company | Chitosan-coated web and process for making the same |
CN1289533C (zh) * | 2001-09-25 | 2006-12-13 | 罗在云 | 用于制备水溶性游离胺脱乙酰壳多糖的方法 |
EP1497335A4 (en) * | 2002-04-02 | 2009-08-12 | Cargill Inc | PREPARATION OF CHITOSAN |
US20030034137A1 (en) * | 2002-07-19 | 2003-02-20 | Neogi Amar N. | Superabsorbent cellulosic fiber |
US20030024663A1 (en) * | 2002-07-19 | 2003-02-06 | Neogi Amar N. | Superabsorbent cellulosic fiber |
US20030035950A1 (en) * | 2002-07-19 | 2003-02-20 | Neogi Amar N. | Superabsorbent cellulosic fiber |
US20030034136A1 (en) * | 2002-07-19 | 2003-02-20 | Neogi Amar N. | Superabsorbent cellulosic fiber |
US20040097894A1 (en) * | 2002-11-14 | 2004-05-20 | Giovanni Carlucci | Absorbent articles including chitin-based feces modification agent |
US6896809B2 (en) * | 2002-12-20 | 2005-05-24 | Providence Health System - Oregon | Methods for purifying chitosan |
US7291674B2 (en) * | 2003-10-28 | 2007-11-06 | Stockhausen, Inc. | Superabsorbent polymer |
US20050142965A1 (en) * | 2003-12-29 | 2005-06-30 | Kimberly-Clark Worldwide, Inc. | Surface charge manipulation for improved fluid intake rates of absorbent composites |
US8426528B2 (en) * | 2004-02-23 | 2013-04-23 | E I Du Pont De Nemours And Company | Preparation of crosslinked polymers containing biomass derived materials |
JP2007523096A (ja) * | 2004-02-23 | 2007-08-16 | 張才騰 | 金属錯体化合物溶液とその応用 |
WO2005082977A1 (en) * | 2004-02-23 | 2005-09-09 | E.I. Dupont De Nemours And Company | Crosslinked polymers containing biomass derived materials |
CA2559075A1 (en) * | 2004-03-11 | 2005-09-22 | Medtrade Products Limited | Compositions of alpha and beta chitosan and methods of preparing them |
US20060141046A1 (en) * | 2004-05-06 | 2006-06-29 | Ivrea Pharmaceuticals, Inc. | Particles for the delivery of active agents |
CA2565236A1 (en) * | 2004-05-06 | 2005-11-17 | Ivrea Pharmaceuticals, Inc. | Particles for the delivery of active agents |
FR2874926B1 (fr) * | 2004-05-25 | 2007-05-11 | Gerard Sassi | Sels de chitosane permettant d'inhiber l'adsorption des graisses et leurs procedes de preparation |
FR2874925A1 (fr) * | 2004-05-25 | 2006-03-10 | Richard Cancel | Sel de chitosane permettant d'inhiber l'adsorption des graisses |
AR053438A1 (es) * | 2005-02-07 | 2007-05-09 | Du Pont | Mezclas de polimeros antimicrobianas termoplasticas a base de quitosano |
EP1846051A2 (en) * | 2005-02-07 | 2007-10-24 | E.I.Du pont de nemours and company | Attachment of chitosan to surfaces using rehydration process |
GB0526505D0 (en) | 2005-12-29 | 2006-02-08 | Medtrade Products Ltd | Hemostatic material |
GB0526503D0 (en) | 2005-12-29 | 2006-02-08 | Medtrade Products Ltd | Hemostatic material |
FR2897775B1 (fr) * | 2006-02-24 | 2013-05-03 | Elisabeth Laugier | Biomateriau, implant injectable le comprenant, son procede de preparation et ses utilisations |
GB0625813D0 (en) * | 2006-12-22 | 2007-02-07 | Advanced Biopolymers As | Process |
US7776840B2 (en) * | 2007-02-21 | 2010-08-17 | Cutanea Life Sciences, Inc. | Methods of use of biomaterial and injectable implant containing biomaterial |
AU2008293135B2 (en) | 2007-08-28 | 2014-08-07 | Adelaide Research & Innovation Pty Ltd | Surgical hydrogel |
EP2209813A1 (en) * | 2007-10-30 | 2010-07-28 | Viscogel Ab | Chitosan composition |
US8841440B2 (en) * | 2008-04-01 | 2014-09-23 | Cornell University | Organo-soluble chitosan salts and chitosan-derived biomaterials prepared thereof |
EP2498763A4 (en) | 2009-11-09 | 2015-10-07 | Spotlight Technology Partners Llc | HYDROGELS BASED ON POLYSACCHARIDE |
US8795727B2 (en) | 2009-11-09 | 2014-08-05 | Spotlight Technology Partners Llc | Fragmented hydrogels |
US8975387B1 (en) | 2010-03-22 | 2015-03-10 | North Carolina State University | Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same |
KR101327083B1 (ko) * | 2010-05-07 | 2013-11-07 | (주)아모레퍼시픽 | 수불용성 겔 조성물 제조 방법 및 그에 의해 제조된 수불용성 겔 |
US8715719B2 (en) * | 2010-06-16 | 2014-05-06 | Abbott Vascular, Inc. | Stable chitosan hemostatic implant and methods of manufacture |
US9711249B2 (en) * | 2010-09-17 | 2017-07-18 | Soletanche Freyssinet | Method of immobilizing nuclear waste |
KR101967005B1 (ko) * | 2011-03-17 | 2019-04-08 | 퍼마-픽스 인바이런멘틀 서비시스, 인크. | 키토산계 미세다공성 복합물질의 제조 및 이의 응용 |
US10500564B2 (en) | 2011-03-17 | 2019-12-10 | Perma-Fix Environmental Services, Inc. | Preparation of chitosan-based microporous composite material and its applications |
US9611420B2 (en) | 2013-05-06 | 2017-04-04 | Halliburton Energy Services, Inc. | Crosslinking chitosan for reducing permeability in a well |
EP3149050A1 (en) * | 2014-06-02 | 2017-04-05 | Tethis, Inc. | Modified biopolymers and methods of producing and using the same |
US20210045942A1 (en) | 2014-06-02 | 2021-02-18 | Tethis, Inc. | Absorbent articles with biocompostable properties |
US20210022931A1 (en) | 2014-06-02 | 2021-01-28 | Tethis, Inc. | Absorbent articles with biocompostable properties |
US10980912B2 (en) | 2014-06-02 | 2021-04-20 | Tethis, Inc. | Absorbent articles with biocompostable properties |
PL409231A1 (pl) * | 2014-08-21 | 2016-02-29 | Warszawski Uniwersytet Medyczny | Sposób wytwarzania gwoździ śródszpikowych z chitozanu do leczenia złamań kości długich |
MX2017006477A (es) * | 2014-11-19 | 2017-09-12 | Perma-Fix Env Services Inc | Preparacion de material compuesto microporoso a base de quitosano y sus aplicaciones. |
US10689566B2 (en) | 2015-11-23 | 2020-06-23 | Anavo Technologies, Llc | Coated particles and methods of making and using the same |
US10487190B2 (en) * | 2015-11-24 | 2019-11-26 | Council Of Scientific & Industrial Research | Macroporous omniphilic sponges |
WO2017172437A1 (en) * | 2016-03-30 | 2017-10-05 | Tufts University | Fabrication of macroporous polymeric hydrogel microparticles |
WO2017168249A2 (en) | 2016-03-30 | 2017-10-05 | Qualizyme Diagnostics Gmbh & Co Kg | Detecting microbial infection in wounds |
US10786596B2 (en) | 2018-01-12 | 2020-09-29 | Boston Scientific Scimed, Inc. | Powder for achieving hemostasis |
US11766366B2 (en) | 2019-11-01 | 2023-09-26 | Tethis, Inc. | Absorbent hygienic articles with sensors and biocompostable elements |
CN113667484B (zh) * | 2021-08-07 | 2022-08-26 | 广东东华生态科技有限公司 | 一种市政园林污染土壤修复剂及修复方法 |
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CA731146A (en) * | 1966-03-29 | W. Anderson Arthur | Insolubilization of water-soluble cellulose ethers | |
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CA1202904A (en) * | 1983-11-21 | 1986-04-08 | Brian G. Sparkes | Chitosan based wound dressing materials |
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DE3614697A1 (de) * | 1986-04-30 | 1987-11-05 | Wella Ag | Kosmetische mittel auf der basis von n-hydroxybutyl-chitosanen, neue n-hydroxybutyl-chitosane sowie verfahren zu ihrer herstellung |
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CA2073292C (en) * | 1991-10-25 | 2004-06-29 | Xin Ning | Carboxyalkyl polysaccharides having improved absorbent properties and process for the preparation thereof |
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CA2072918A1 (en) * | 1992-02-14 | 1993-08-15 | Jian Qin | Modified polysaccharides having improved absorbent properties and process for the preparation thereof |
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-
1994
- 1994-12-22 US US08/362,395 patent/US5599916A/en not_active Expired - Lifetime
-
1995
- 1995-12-12 SV SV1995000091A patent/SV1995000091A/es unknown
- 1995-12-14 CA CA002208892A patent/CA2208892A1/en not_active Abandoned
- 1995-12-14 EP EP95943779A patent/EP0799247B1/en not_active Expired - Lifetime
- 1995-12-14 KR KR1019970704277A patent/KR100412190B1/ko active
- 1995-12-14 WO PCT/US1995/016191 patent/WO1996020015A2/en active IP Right Grant
- 1995-12-14 MX MX9704660A patent/MX212300B/es not_active IP Right Cessation
- 1995-12-14 JP JP8520480A patent/JPH10511720A/ja active Pending
- 1995-12-14 AU AU45167/96A patent/AU689692B2/en not_active Ceased
- 1995-12-14 DE DE69527370T patent/DE69527370T2/de not_active Expired - Lifetime
- 1995-12-15 PH PH51943A patent/PH11995051943B1/en unknown
- 1995-12-18 ZA ZA9510740A patent/ZA9510740B/xx unknown
- 1995-12-19 AR AR33470995A patent/AR000398A1/es unknown
- 1995-12-20 TW TW84113624A patent/TW323286B/zh active
- 1995-12-20 TR TR95/01616A patent/TR199501616A2/xx unknown
- 1995-12-20 PE PE1995287591A patent/PE12597A1/es not_active Application Discontinuation
- 1995-12-20 UY UY24123A patent/UY24123A1/es not_active IP Right Cessation
- 1995-12-21 GB GB9526240A patent/GB2296250B/en not_active Expired - Lifetime
- 1995-12-21 FR FR9515230A patent/FR2728575B1/fr not_active Expired - Lifetime
- 1995-12-21 EG EG107295A patent/EG21032A/xx active
- 1995-12-22 MY MYPI95004047A patent/MY113109A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CA2208892A1 (en) | 1996-07-04 |
US5599916A (en) | 1997-02-04 |
FR2728575B1 (fr) | 1997-06-06 |
GB9526240D0 (en) | 1996-02-21 |
KR100412190B1 (ko) | 2004-04-29 |
MY113109A (en) | 2001-11-30 |
EP0799247B1 (en) | 2002-07-10 |
SV1995000091A (es) | 1996-07-25 |
FR2728575A1 (fr) | 1996-06-28 |
DE69527370D1 (de) | 2002-08-14 |
KR987000880A (en) | 1998-04-30 |
EG21032A (en) | 2000-09-30 |
WO1996020015A3 (en) | 1996-09-06 |
PE12597A1 (es) | 1997-04-30 |
GB2296250B (en) | 1997-09-10 |
UY24123A1 (es) | 1996-06-11 |
EP0799247A2 (en) | 1997-10-08 |
WO1996020015A2 (en) | 1996-07-04 |
AU4516796A (en) | 1996-07-19 |
JPH10511720A (ja) | 1998-11-10 |
TR199501616A2 (tr) | 1996-07-21 |
ZA9510740B (en) | 1996-06-20 |
MX9704660A (es) | 2000-04-30 |
DE69527370T2 (de) | 2002-12-12 |
AU689692B2 (en) | 1998-04-02 |
TW323286B (es) | 1997-12-21 |
AR000398A1 (es) | 1997-06-18 |
GB2296250A (en) | 1996-06-26 |
PH11995051943B1 (en) | 1999-07-05 |
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