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:
Jun. 21, 1977
Filed:
Dec. 08, 1975
Applicant:
Inventors:
Robert Gene Laughlin, Cincinnati, OH (US);
Thomas William Gougeon, Cincinnati, OH (US);
Assignee:
The Procter & Gamble Company, Cincinnati, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
424 28 ; 128130 ; 128260 ; 424 14 ; 424 16 ;
Abstract
Controlled release articles which regulate the concentration of a surfactant compound at a useful level in an environment external to said articles are provided with a coating. The improved articles are especially useful in or on the bodies of animals, including humans, to provide immediate release of the coating and, thereafter, to provide controlled release of surfactants having biological activity, e.g., non-hormonal contraceptives.