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:
Feb. 16, 1993
Filed:
Jan. 15, 1992
Applicant:
Inventors:
Gary W Cleary, San Mateo, CA (US);
Samir D Roy, Redwood City, CA (US);
Assignee:
Cygnus Therapeutic Systems, Redwood City, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
424448 ; 424449 ; 424444 ;
Abstract
A laminated composite for administering fentanyl transdermally that consists of a fentanyl-impermeable occlusive backing layer and an adhesive fentanyl reservoir layer comprising fentanyl dissolved in an amine-resistant polydimethylsiloxane that has a high diffusivity and poor solubility for fentanyl which enables the fentanyl to be released rapidly from the composite over a one day period with little residual fentanyl left in the reservoir thereafter.