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:
Aug. 26, 2003
Filed:
Aug. 09, 2001
Hiroyuki Hayami, Itami, JP;
Terunobu Iio, Itami, JP;
Toshikazu Gozen, Itami, JP;
Hirokazu Kuzushita, Itami, JP;
Michitsugu Mori, Yokohama, JP;
Takashi Okamura, Yokohama, JP;
Shuichi Ohmori, Yokohama, JP;
Mitsubishi Cable Industries, Ltd., Amagasaki, JP;
Abstract
A silica optical fiber is provided, which contains a pure-silica core and a cladding layer formed on the pure-silica core, wherein the pure-silica core contains a C element and has a content of elements belonging to the third period-the seventh period of the periodic table, except Si element that constitutes the quartz structure, of not more than 100 ppm. The present invention can provide a silica optical fiber superior in the resistance to high energy electromagnetic waves such as UV light and &ggr;-rays.