Global Patent Index - EP 1061904 A1

EP 1061904 A1 2000-12-27 - NANOPARTICLES, METHOD FOR PRODUCING NANOPARTICLES AND USE OF THE SAME

Title (en)

NANOPARTICLES, METHOD FOR PRODUCING NANOPARTICLES AND USE OF THE SAME

Title (de)

NANOPARTIKEL, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG

Title (fr)

NANOPARTICULES, LEUR PROCEDE DE PRODUCTION ET LEUR UTILISATION

Publication

EP 1061904 A1 (DE)

Application

EP 99911744 A

Priority

  • DE 19810965 A
  • EP 9901452 W

Abstract (en)

[origin: DE19810965A1] Nanoparticles comprising a biocompatible, biodegradable polyelectrolyte complex consisting of a polycation, a polyanion and a biologically active agent are produced by crosslinking the polyelectrolyte complex during or after its formation. An Independent claim is also included for the production of the nanoparticles by combining the active agent in bound or unbound form with an aqueous polycation solution and an aqueous polyanion solution, if necessary converting the resulting polyelectrolyte complex into nanoparticulate form, and treating the nanoparticulate complex with a crosslinking agent.

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

A61K 9/51

IPC 8 full level (invention and additional information)

A61K 9/51 (2006.01); A61K 47/30 (2006.01)

CPC (invention and additional information)

A61K 9/5161 (2013.01); A61K 9/5192 (2013.01)

Citation (search report)

See references of WO 9947130A1

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

DE 19810965 A1 19990916; AU 3031899 A 19991011; CN 1292687 A 20010425; EP 1061904 A1 20001227; JP 2002506814 A 20020305; WO 9947130 A1 19990923

INPADOC legal status


2002-01-09 [18W] WITHDRAWN

- Date of withdrawal: 20011114

2000-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001013

2000-12-27 [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