EP 1313446 A4 20070530 - WATER SOLUBLE MICROFLAKE THROUGH AIR-GAP AND PROCESS THEREFORE
Title (en)
WATER SOLUBLE MICROFLAKE THROUGH AIR-GAP AND PROCESS THEREFORE
Title (de)
WASSERLÖSLICHE MIKROFLOCKEN DURCH LUFTSCHLITZE UND PROZESS HIERFÜR
Title (fr)
MICROPAILLETTES HYDROSOLUBLES GRACE A DES ESPACES D'AIR, ET PROCEDE ASSOCIE
Publication
Application
Priority
- KR 0100432 W 20010319
- KR 20000041075 A 20000718
- KR 20000061106 A 20001017
Abstract (en)
[origin: WO0205783A1] Disclosed is a multi-layered, air-gap sheet of chitosan with a regular lamellar structure, which retains drug for a prolonged period of time and makes drug distributed uniformly therethroughout. In the lamellar structure chitosan thin films 1-50 mu m thick are layered at such regular gaps of 1-10,000 mu m in the direction perpendicular or horizontal to the surface of the sheet or slanting against the surface of the sheet that drugs can be homogeneously dispersed throughout the sheet. It is a novel form which can be effectively used as a clinical-pathological agent with high coatability onto skin, maximizing the medicinal efficacy of chitosan. The sheet of the present invention is highly suitable for use as a chitosan source for a broad spectrum of applications because it can be readily dissolved in water owing to its large surface area.
IPC 1-7
IPC 8 full level
A61K 9/16 (2006.01); A61K 9/00 (2006.01); A61K 9/19 (2006.01); A61K 9/70 (2006.01); C08B 37/08 (2006.01); A61K 47/36 (2006.01)
CPC (source: EP)
A61K 9/0014 (2013.01); A61K 9/19 (2013.01); A61K 9/7007 (2013.01); A61P 17/00 (2017.12); A61K 47/36 (2013.01)
Citation (search report)
- [PA] WO 0104207 A1 20010118 - COGNIS DEUTSCHLAND GMBH [DE], et al
- [A] MADIHALLY S V ET AL: "Porous chitosan scaffolds for tissue engineering", BIOMATERIALS, ELSEVIER SCIENCE PUBLISHERS BV., BARKING, GB, vol. 20, June 1999 (1999-06-01), pages 1133 - 1142, XP002286582, ISSN: 0142-9612
- [A] DATABASE WPI Week 199049, Derwent World Patents Index; AN 1990-364546, XP002157157
- See references of WO 0205783A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0205783 A1 20020124; AU 4475601 A 20020130; CN 1248679 C 20060405; CN 1443063 A 20030917; EP 1313446 A1 20030528; EP 1313446 A4 20070530; JP 2004503671 A 20040205
DOCDB simple family (application)
KR 0100432 W 20010319; AU 4475601 A 20010319; CN 01812883 A 20010319; EP 01917879 A 20010319; JP 2002511716 A 20010319