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:
Nov. 13, 1984
Filed:
Apr. 13, 1983
Applicant:
Inventors:
Bernard G Sheldon, Palo Alto, CA (US);
Robert E Wingard, Jr, Mountain View, CA (US);
Ned M Weinshenker, Palo Alto, CA (US);
Daniel J Dawson, Los Altos, CA (US);
Assignee:
Dynapol, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; A01N / ; C08F / ;
U.S. Cl.
CPC ...
5253314 ; 5253333 ; 525379 ; 525380 ; 525381 ; 5253267 ; 5253271 ; 5253282 ; 5253294 ; 521 27 ; 424 78 ; 424329 ; 526293 ;
Abstract
Polymeric quaternary ammonium compounds having recurring vinylbenzyl ammonium units are disclosed. The quaternary ammonium units preferably have 2 alkyl substituents of 1 to 4 carbons and 1 alkyl substituent of 4 to 12 carbons. These materials have antimicrobial properties and are particularly useful for preserving ophthalmic solutions.