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:
Apr. 04, 1989
Filed:
Sep. 01, 1987
Applicant:
Inventors:
Yuuetsu Takuma, Hitachi, JP;
Hiroshi Kajioka, Hitachi, JP;
Tatsuya Kumagai, Hitachi, JP;
Toshihide Tokunaga, Kita-Ibaragi, JP;
Kohdo Yamada, Hitachi, JP;
Assignee:
Hitachi Cable Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9633 ; 350 9634 ;
Abstract
A polarized wave preserving fiber has a core at its center, cladding, an oval jacket, and a support member in order to improve transmitting property of the polarized single mode by adjusting the refractive index distribution and the ellipticity of the oval jacket.