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:
Sep. 08, 1981
Filed:
Apr. 02, 1979
Applicant:
Inventors:
Tadashi Takeuchi, Higashikurume, JP;
Taiji Yamabe, Yokohama, JP;
Assignee:
Daicel Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
D02G / ; G02B / ;
U.S. Cl.
CPC ...
350 9634 ; 350 9630 ; 428375 ; 428391 ; 428392 ;
Abstract
A low-loss optical fiber core for optical communications is covered with at least one layer of a polylaurolactam copolymer composed of 20 to 98 parts by weight of laurolactam and 80 to 2 parts by weight of a polyamide-forming monomer other than laurolactam, said copolymer having a melting point within a range of 100.degree. C. to 170.degree. C.