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:
Jan. 09, 2001
Filed:
Jul. 23, 1999
Seiko Mitachi, Tokyo, JP;
Ryo Nagase, Tokyo, JP;
Yoshiaki Takeuchi, Tokyo, JP;
Takashi Tanabe, Tokyo, JP;
Akihiko Sakamoto, Shiga, JP;
Hirokazu Takeuchi, Shiga, JP;
Masayuki Ninomiya, Shiga, JP;
Katsumi Inada, Shiga, JP;
Other;
Abstract
In order to provide a ferrule for an optical-fiber connector used for good organization of an optical communication network, the ferrule for an optical-fiber connector is made of a crystallized glass having a composition which consists essentially of, by weight percent, 60-70% of SiO,, 16-25% of Al,O,, 1.5-3% of Li,O, 0.5-2.5% of MgO, 1.3-4.5% of TiO,, 0.5-3% of ZrO,, 2-6.5% of TiO,+ZrO,, 1-5.5% of K,O, 0-7% of ZnO, and 0-3% of BaO. The crystallized glass includes 30-70 volume % precipitation of &bgr;-spodumene solid solution or &bgr;-quartz solid solution having an average grain size not greater than 2 &mgr;m. In addition, the crystallized glass has a bend strength of 200 MPa or more and a thermal expansion coefficient of −10˜50×10,/° C. at a temperature between −50 and 150° C.