The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 1990
Filed:
Feb. 26, 1988
Applicant:
Inventors:
Pieter J Greidanus, Bergschenhoek, NL;
Jan Feijen, Hengelo, NL;
Marinus J Eenink, Enschede, NL;
Johannes C Rieke, Delft, NL;
Jan Olijslager, Delft, NL;
Jan H Albers, Rijswijk, NL;
Assignee:
Nederlandse Organisatie Voor Toegepast-Natuurwetenschappe Lijk, The Hague, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; D02G / ;
U.S. Cl.
CPC ...
428398 ; 21050022 ; 21050023 ; 428372 ; 428376 ;
Abstract
Biodegradable hollow fibres with an asymmetric wall, the cavity of which containing an active substance like a drug, hormone etc. or a dilute form of the latter and both ends of the hollow fibre being closed for the controlled release of the active substance as well as a process for the manufacturing of such hollow fibres.