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:
May. 12, 1987
Filed:
Aug. 03, 1984
Applicant:
Inventor:
Philip L Williams, Barnet, GB;
Assignee:
Hydro Optics, Inc., Hackensack, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C11B / ;
U.S. Cl.
CPC ...
2525 / ; 252-86 ; 2525 / ; 424 40 ;
Abstract
A hydrophilic monomer such as hydroxypropyl methacrylate and a lipophilic monomer such as lauryl methacrylate are copolymerized in the presence of a fragrance or other volatile active ingredient. The resulting polymer contains entrapped active ingredient which tends not to exude from the polymer during storage yet is gradually released as vapor when the polymer is exposed to the atmosphere, e.g. as an air-freshener.