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:
Oct. 19, 1999
Filed:
Mar. 13, 1998
Applicant:
Inventors:
Shinya Inagaki, Kawasaki, JP;
Norifumi Shukunami, Sapporo, JP;
Keiko Takeda, Kawasaki, JP;
Koji Okamura, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
385127 ; 385128 ; 359341 ; 372-6 ;
Abstract
An optical amplifying fiber including a center core region doped with erbium, aluminum, and phosphor, and a ring region doped with erbium and aluminum, the ring region being radially spaced a given distance from the center core region.
Inagaki, Shinya. (1999). Optically amplifying fiber and optical fiber amplifier (U.S. Patent No. 5970198). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5970198
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile