Global Patent Index - EP 0993483 A1

EP 0993483 A1 2000-04-19 - CONJUGATE OF POLYETHYLENE GLYCOL AND CHITOSAN

Title (en)

CONJUGATE OF POLYETHYLENE GLYCOL AND CHITOSAN

Title (de)

KONJUGAT AUS POLYÄTHYLENGLYKOL UND CHITOSAN

Title (fr)

CONJUGUE DE POLYETHYLENEGLYCOL ET DE CHITOSANE

Publication

EP 0993483 A1 (EN)

Application

EP 98932368 A

Priority

  • GB 9801971 W
  • GB 9713980 A

Abstract (en)

[origin: WO9901498A1] PEG-chitosan conjugates comprising chitosan and polyethylene glycol moieties or derivatives thereof which are bonded together and their use in medicine is described. In one embodiment, the conjugate comprises a chitosan moiety or a derivative thereof and a polyethylene glycol moiety or a derivative thereof which are bonded together via the amino function on the chitosan by the use of an activated chitosan species. In another embodiment, the conjugate comprises a chitosan moiety or a derivative thereof and a polyethylene glycol moiety or a derivative thereof which are bonded together, the chitosan portion of the conjugate having a molecular weight in the range of from 10 kilodalton to 1000 kilodalton.

IPC 1-7 (main, further and additional classification)

C08G 81/00; C08B 37/08; A61K 31/715; A61K 9/127; A61K 9/50; A61K 9/16

IPC 8 full level (invention and additional information)

A61K 9/127 (2006.01); A61K 9/16 (2006.01); A61K 9/50 (2006.01); A61K 9/51 (2006.01); A61K 45/00 (2006.01); A61K 47/48 (2006.01); A61P 31/04 (2006.01); A61P 31/10 (2006.01); A61P 31/12 (2006.01); C08B 37/08 (2006.01); C08G 81/00 (2006.01); A61K 9/00 (2006.01)

CPC (invention and additional information)

A61K 9/5161 (2013.01); A61K 9/1652 (2013.01); A61K 47/61 (2017.08); C08B 37/003 (2013.01); C08G 81/00 (2013.01); A61K 9/0034 (2013.01); A61K 9/0043 (2013.01); A61K 9/0048 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9901498 A1 19990114; AU 8230598 A 19990125; EP 0993483 A1 20000419; EP 1304346 A2 20030423; EP 1304346 A3 20030502; GB 9713980 D0 19970910; JP 2002508020 A 20020312; ZA 9805831 B 20000110

INPADOC legal status


2003-06-04 [18R] REFUSED

- Effective date: 20030125

2002-05-08 [RTI1] TITLE (CORRECTION)

- Free text: COMPLEX FORMED BETWEEN A CONJUGATE OF POLYETHYLENE GLYCOL AND CHITOSAN AND A THERAPEUTIC AGENT

2001-01-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20001213

2000-04-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000107

2000-04-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE