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:
Feb. 04, 2014
Filed:
May. 20, 2011
Koji Omichi, Sakura, JP;
Yoshihiro Terada, Sakura, JP;
Yutaka Endoh, Sakura, JP;
Kazuyuki Hayashi, Sakura, JP;
Katsuaki Izoe, Sakura, JP;
Kazuhiko Aikawa, Sakura, JP;
Manabu Kudoh, Sakura, JP;
Koji Omichi, Sakura, JP;
Yoshihiro Terada, Sakura, JP;
Yutaka Endoh, Sakura, JP;
Kazuyuki Hayashi, Sakura, JP;
Katsuaki Izoe, Sakura, JP;
Kazuhiko Aikawa, Sakura, JP;
Manabu Kudoh, Sakura, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
The polarization-maintaining fiber of the invention includes a core () made of germanium doped silica glass; a stress-applying part () made of boron doped silica glass; a cladding () made of pure silica glass; and a polyimide coating layer () with a thickness of 10 μm or less that surrounds the outer periphery of the cladding ().