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:
Sep. 28, 1999
Filed:
Aug. 18, 1997
Applicant:
Inventors:
Louis Michele Aguadisch, Valbonne, FR;
Andre Rudolf Colas, Valbonne, FR;
Assignee:
Dow Corning France S.A., South Glamorgan, US;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264159 ; 264255 ; 264267 ; 264251 ;
Abstract
A method of manufacturing a controlled-release device is described. The method comprises taking a hollow tubular element which is permeable to the active substance to be released and injecting it with at least two plugs of hardenable material. These plugs form partitions which block the hollow tubular element and are spaced apart to form at least one discrete hollow chamber. The hardenable material is then hardened and an active substance is introduced into at least one of the discrete hollow chambers.