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. 24, 1990
Filed:
Mar. 08, 1989
Applicant:
Inventors:
Assignee:
Menicon Co., Ltd., Nagoya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
5253289 ; 5253295 ; 5253306 ; 5263296 ; 5263295 ;
Abstract
A highly water-absorptive ocular lens material obtained by saponification for hydrophilic treatment of a copolymer composed essentially of:
Toyoshima, Nobuyuki. (1990). Highly water-absorptive ocular lens material (U.S. Patent No. 4920180). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4920180
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile