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:
Feb. 27, 1990
Filed:
May. 31, 1988
Applicant:
Inventors:
Isao Kaetsu, Takasaki, JP;
Minoru Kumakura, Maebashi, JP;
Hidenari Suyama, Yokohama, JP;
Nobuo Kameda, Tokyo, JP;
Hideo Kouyama, Ohmiya, JP;
Assignees:
Japan Atomic Energy Research Institute, Tokyo, JP;
Kabushiki Kaisha Tokyo Contact Lens Kenkyusho, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
522-5 ; 522 84 ; 523106 ; 264-14 ;
Abstract
Hydrophilic monomers in a supercooled, transparent state, are polymerized in the presence of water. The polymers have low levels of residual monomers and exhibit good mechanical strength. The process provides materials useful as contact lenses.