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. 30, 2013
Filed:
Dec. 22, 2009
Ernesto J. Castillo, Fort Worth, TX (US);
Hwang-hsing Chen, Fort Worth, TX (US);
Masood A. Chowhan, Arlington, TX (US);
Glenn D. Stafford, Jr., White Settlement, TX (US);
Ernesto J. Castillo, Fort Worth, TX (US);
Hwang-Hsing Chen, Fort Worth, TX (US);
Masood A. Chowhan, Arlington, TX (US);
Glenn D. Stafford, Jr., White Settlement, TX (US);
Alcon Research, Ltd., Fort Worth, TX (US);
Abstract
New polymeric quaternary ammonium compounds with vicinal hydroxyl groups are disclosed. These compounds are useful as disinfectants in contact lens care compositions and/or as preservatives in ophthalmic compositions. Compositions containing these compounds are also disclosed. These compositions are especially useful for disinfecting/cleaning contact lenses.