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. 06, 1998
Filed:
Jun. 05, 1995
Applicant:
Inventors:
Stephen T Wellinghoff, San Antonio, TX (US);
Joel J Kampa, San Antonio, TX (US);
Assignee:
Southwest Research Institute, San Antonio, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01N / ; A01N / ;
U.S. Cl.
CPC ...
25218721 ; 25218723 ; 424410 ; 424412 ;
Abstract
A multilayered composite for providing sustained release of chlorine dioxide includes a hydrophobic layer containing an acid releasing agent, and a hydrophilic layer containing chlorite anions. The hydrophilic and hydrophobic layers are adjacent and substantially free of water, and the hydrophilic layer is capable of releasing chlorine dioxide upon hydrolysis of the acid releasing agent.