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:
Jul. 22, 2003
Filed:
May. 08, 2001
Takashi Fujii, Yokohama, JP;
Toshifumi Hosoya, Yokohama, JP;
Kenji Tamano, Yokohama, JP;
Keiichiro Fukuda, Yokohama, JP;
Eisuke Sasaoka, Yokohama, JP;
Shigeru Tanaka, Yokohama, JP;
Kohei Kobayashi, Yokohama, JP;
Sumitomo Electric Industries Co., Ltd., Osaka, JP;
Abstract
An optical fiber ( ) which does not readily suffer influences of side pressures and can realize superior transmission characteristics, having a glass part ( ) having a core ( ) and at least one cladding ( ) and at least one covering layer ( ) formed around the glass part ( ), characterized in that the Young's modulus at 23° C. of the covering layer ( ) without the glass part ( ) is not greater than 400 MPa. The Young's modulus measurement of the covering layer ( ) is obtained by removing the glass part ( ) from the optical fiber ( ) and putting the covering layer ( ) to a tensile test.