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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 4139548 B1

PDFFull Text
Date of Patent:
Feb. 13, 1979

Filed:

Mar. 20, 1978

Methyldi(trimethylsiloxy)sylylpropylglycerol methacrylate

Applicant:
Inventors:

Kyoichi Tanaka, Nagoya, JP;

Kouzou Takahashi, Nagoya, JP;

Mitsuhiro Kanada, Aichi, JP;

Toshiharu Yoshikawa, Nagoya, JP;

Assignee:

Toyo Contact Lens Co., Ltd., Aichi, JP;

Attorney:

Armstrong, Nikaido, Marmelstein & Kubovcik

Primary Examiner:

Paul F Shaver

Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract

A novel methacrylic acid ester derivative, methyldi(trimethylsiloxy)sylylpropylglycerol methacrylate which is availably employed as a main monomer for preparing copolymers useful as a material of contact lenses. The derivative has siloxane bond which contributes to increase of the oxygen permeability of its copolymers, and has hydrophilic hydroxyl group and ether bond by which the derivative is miscible with a hydrophilic monomer in all proportions and is easily copolymerizable therewith and colorless transparent copolymers are obtained.

Find Patent Forward Citations

Tanaka, Kyoichi. (1979). Methyldi(trimethylsiloxy)sylylpropylglycerol methacrylate (U.S. Patent No. 4139548). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4139548

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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