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.:

US 4853453 B1

Date of Patent:

Aug. 01, 1989

Filed:

Dec. 18, 1987

Modified silicone rubber and its use as a material for optical lenses

Applicant:

Inventors:

Horst Schafer, Aschaffenburg, DE;

Gerhard Kossmehl, Berlin, DE;

Walter Neumann, Konigsbronn, DE;

Assignee:

Ciba-Geigy Corporation, Ardsley, NY (US);

Attorney:

Hall; Luther A. R.

Primary Examiner:

John C Bleutge

Assistant Examiner:

David W Woodward

Int. Cl.

CPC ...

C08B / ;

U.S. Cl.

CPC ...

528 28 ; 525474 ; 3511 / ; 351159 ;

Abstract

A modified silicone rubber with dimethylsiloxane and urethane units in the main chains, which are cross linked through methyl groups. This material is hydrophilic and suitable as a contact lens material.

Find Patent Forward Citations

Schafer, Horst. (1989). Modified silicone rubber and its use as a material for optical lenses (U.S. Patent No. 4853453). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4853453

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