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:
Apr. 04, 2000
Filed:
May. 19, 1997
Applicant:
Inventors:
Stephen T Wellinghoff, San Antonio, TX (US);
Sumner A Barenberg, Chicago, IL (US);
Joel J Kampa, Burnett, TX (US);
Darren E Barlow, San Antonio, TX (US);
Assignee:
Bernard Technologies, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A01N / ; A01N / ;
U.S. Cl.
CPC ...
5147723 ; 424405 ; 424409 ; 424410 ; 424411 ; 424414 ; 424416 ; 25218721 ; 25218723 ;
Abstract
A composite for retarding microbiological contamination containing a hydrophobic material containing an acid releasing agent, and a hydrophilic material containing anions that are capable of reacting with hydronium ions to generate a gas. The hydrophilic and hydrophobic materials are adjacent and substantially free of water, and the hydrophilic material is capable of generating and releasing the gas after hydrolysis of the acid releasing agent.