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:
Jun. 09, 2026
Filed:
Aug. 02, 2021
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventor:
Yuya Homma, Osaka, JP;
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 290/06 (2006.01); C03C 25/1065 (2018.01); C03C 25/326 (2018.01); G02B 6/02 (2006.01);
U.S. Cl.
CPC ...
C08F 290/067 (2013.01); C03C 25/1065 (2013.01); C03C 25/326 (2013.01); G02B 6/02395 (2013.01);
Abstract
A resin composition for primary coating of an optical fiber includes a photopolymerizable compound and a photopolymerization initiator. The photopolymerizable compound includes a urethane oligomer and an N-vinyl compound represented by the formula (I) below: (where R represents an alkyl group having 1 to 5 carbon atoms).