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. 30, 2001
Filed:
Oct. 06, 1993
Applicant:
Inventors:
Gary J. Calton, Elkridge, MD (US);
Sidney R. Siemer, Fresno, CA (US);
Louis L. Wood, Rockville, MD (US);
Assignee:
AquaSource, Inc., Glen Burnie, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01N 2/508 ;
U.S. Cl.
CPC ...
A01N 2/508 ;
Abstract
This invention discloses slow release formulations for use in application of volatile insect repellents. A copolymer of polyvinyl pyrrolidone and an alkyl group of 4-30 carbons provides the slow release properties. The formulations are characterized by high residual action, low skin penetration, and high resistance to removal by water.