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:
Jan. 24, 1989
Filed:
Feb. 14, 1986
Applicant:
Inventors:
James B Eckenhoff, Los Altos, CA (US);
Felix Theeuwes, Los Altos, CA (US);
Joseph C Deters, Mountain View, CA (US);
Assignee:
ALZA Corporation, Palo Alto, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; B29C / ;
U.S. Cl.
CPC ...
264129 ; 264155 ; 264238 ; 424463 ; 427-3 ;
Abstract
A method of forming a dispenser for delivering a beneficial agent to a biological environment. A beneficial agent and an expandable composition are placed in a capsule made of fluid dissolvable material. The capsule is closed and surrounded by a semipermeable wall which is permeable to fluid but not to the beneficial agent. Then a passageway is drilled in the capsule between the exterior and the interior which contains the beneficial agent.