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EP1237988
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EP About this file: EP1237988
| EP1237988 - METHOD FOR PRODUCING NANOPARTICULATE CHITOSANS OR CHITOSAN DERIVATIVES [Right-click to bookmark this link] | Status | The application is deemed to be withdrawn Status updated on 16.09.2005 Database last updated on 24.08.2024 | Most recent event Tooltip | 16.09.2005 | Application deemed to be withdrawn | published on 02.11.2005 [2005/44] | Applicant(s) | For all designated states Cognis Deutschland GmbH Henkelstrasse 67 40589 Düsseldorf / DE | [2002/37] | Inventor(s) | 01 /
KROPF, Christian Cäcilienstrasse 4 40597 Düsseldorf / DE | 02 /
REIL, Stephan Bahlenstr. 88 40589 Düsseldorf / DE | [2002/37] | Application number, filing date | 00972819.7 | 20.10.2000 | [2002/37] | WO2000EP10330 | Priority number, date | DE1999152073 | 29.10.1999 Original published format: DE 19952073 | [2002/37] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | WO0132751 | Date: | 10.05.2001 | Language: | DE | [2001/19] | Type: | A1 Application with search report | No.: | EP1237988 | Date: | 11.09.2002 | Language: | DE | The application published by WIPO in one of the EPO official languages on 10.05.2001 takes the place of the publication of the European patent application. | [2002/37] | Search report(s) | International search report - published on: | EP | 10.05.2001 | Classification | IPC: | C08J3/14, C08L5/08, A61K7/00, A61K9/16, A61K47/36 | [2002/37] | CPC: |
A61K9/5161 (EP);
A61K8/0241 (EP);
A61K8/736 (EP);
A61K9/0014 (EP);
A61K9/5192 (EP);
A61Q19/00 (EP);
B82Y5/00 (EP);
C08B37/003 (EP);
C08J3/14 (EP);
C08L5/08 (EP);
A61K2800/413 (EP);
A61K47/36 (EP);
C08J2305/08 (EP)
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| Designated contracting states | DE, ES, FR, GB, IT [2004/22] |
| Former [2002/37] | AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LI, LU, MC, NL, PT, SE | Title | German: | VERFAHREN ZUR HERSTELLUNG VON NANOPARTIKULÄREN CHITOSANEN ODER CHITOSAN-DERIVATEN | [2002/37] | English: | METHOD FOR PRODUCING NANOPARTICULATE CHITOSANS OR CHITOSAN DERIVATIVES | [2002/37] | French: | PROCEDE DE PREPARATION DE CHITOSANES OU DE DERIVES DE CHITOSANE NANOPARTICULAIRES | [2002/37] | Entry into regional phase | 20.04.2002 | National basic fee paid | 20.04.2002 | Designation fee(s) paid | 20.04.2002 | Examination fee paid | Examination procedure | 04.04.2001 | Request for preliminary examination filed International Preliminary Examining Authority: EP | 20.04.2002 | Examination requested [2002/37] | 03.05.2005 | Application deemed to be withdrawn, date of legal effect [2005/44] | 03.06.2005 | Despatch of communication that the application is deemed to be withdrawn, reason: renewal fee not paid in time [2005/44] | Fees paid | Renewal fee | 15.10.2002 | Renewal fee patent year 03 | 14.10.2003 | Renewal fee patent year 04 | Penalty fee | Additional fee for renewal fee | 31.10.2004 | 05 M06 Not yet paid |
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| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Cited in | International search | [A]JPH039925 ; | [AP]WO0035577 (HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN) [AP] 1-12 * claim - *; | [DAP]WO0047177 (COGNIS DEUTSCHLAND GMBH) [DAP] 1 * page 3, line 5 - line 20 *; | [DA]JPH09221502 ; | [A]JPH0930957 ; | [A]JPH07330807 | [A] - "Chitosan microparticles prepn. - involves mixing acidic soln. of chitosan with water soluble polyethylene glycol then adding coagulant.", DATABASE WPI, 1, Derwent World Patents Index, vol. 1991, no. 09, Database accession no. 1991-061423, XP002158839 & JPH039925 A 19910117 (KANEBO LTD) [A] 1-3,5,7,9-11 * abstract * | [DA] - "Chitosan nanospheres used for cosmetics and medicines - prepared by emulsifying aqueous solution of chitosan in organic solvents in presence of quaternary ammonium salt type surfactants.", DATABASE WPI, 1, Derwent World Patents Index, vol. 1997, no. 44, Database accession no. 1997-475486, XP002158840 & JPH09221502 A 19970826 (MITSUBISHI CHEM CORP) [DA] * abstract * | [A] - "Poultice having high water retention and antibacterial action - consists of support holding water-swelled fine spherical particles of chitosan.", DATABASE WPI, 1, Derwent World Patents Index, vol. 1997, no. 15, Database accession no. 1997-161406, XP002158841 & JPH0930957 A 19970204 (OJI PAPER CO) [A] * abstract * | [A] - "Chitosan microparticles prodn. - involves dissolving chitosan in aq. sulphuric acid and then cooling.", DATABASE WPI, 1, Derwent World Patents Index, vol. 1996, no. 08, Database accession no. 1996-074903, XP002158842 & JPH07330807 A 19951219 (DAINICHISEIKA COLOR & CHEM MFG) [A] * abstract * |