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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 4779954 B1

PDFFull Text
Date of Patent:
Oct. 25, 1988

Filed:

Jun. 19, 1987

Plastic optical fiber resistant to heat and humidity

Applicant:
Inventors:

Yoshiharu Tatsukami, Osaka, JP;

Katsuramaru Fujita, Osaka, JP;

Motonobu Furuta, Osaka, JP;

Toshifumi Tamura, Shiga, JP;

Assignee:

Sumitomo Chemical Company, Limited, Osaka, JP;

Attorney:

Birch, Stewart, Kolasch & Birch

Primary Examiner:

William L Sikes

Assistant Examiner:

Brian M Healy

Int. Cl.
CPC ...
G02B / ; C08F / ; B32B / ; B05D / ;
U.S. Cl.
CPC ...
350 9634 ; 350 9630 ; 5263297 ; 428394 ; 427163 ;
Abstract

An optical fiber with low attenuation of light transmission comprising a core and a cladding, wherein the core is made of a polymer comprising units of deuterated methyl methacrylate containing 10 to 40% of a methacrylic ester the ester moiety of which has an alicyclic hydrocarbon group of from 6 to 20 carbon atoms, and the cladding is made of a transparent polymeric material having a refractive index of at least 3% smaller than that of the core, which optical fiber has excellent heat and humidity resistance as well as good flexibility.

Find Patent Forward Citations

Tatsukami, Yoshiharu. (1988). Plastic optical fiber resistant to heat and humidity (U.S. Patent No. 4779954). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4779954

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

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