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. 03, 1981
Filed:
Dec. 27, 1977
Applicant:
Inventors:
Ping I Lee, Ossining, NY (US);
Eduard K Kleiner, New York, NY (US);
Assignee:
Airwick Industries, Inc., Carlstadt, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61L / ;
U.S. Cl.
CPC ...
239-6 ; 239 53 ;
Abstract
A system for the controlled release of air treating material comprising a hydrophilic membrane secured to a reservoir containing an active ingredient in aqueous medium, the membrane serving as the means for releasing the active ingredient to the atmosphere and for controlling the rate of release.