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:
Jun. 02, 2015
Filed:
Mar. 26, 2010
Kei Yoshimura, Inba, JP;
Shinichi Tachizono, Narita, JP;
Yuji Hashiba, Narita, JP;
Takashi Naito, Funabashi, JP;
Takuya Aoyagi, Hitachi, JP;
Kei Yoshimura, Inba, JP;
Shinichi Tachizono, Narita, JP;
Yuji Hashiba, Narita, JP;
Takashi Naito, Funabashi, JP;
Takuya Aoyagi, Hitachi, JP;
HITACHI POWDERED METALS CO., LTD., Chiba, JP;
Abstract
A glass composition according to the present invention comprises: transition metals; phosphorus; barium; and zinc, the transition metals including: vanadium; and tungsten and/or iron, the glass composition not containing substances included in the JIG level A and B lists, an softening point of the glass composition being from 430 to 530° C., an average linear expansion coefficient of the glass composition being from 6 to 9 ppm/° C. at temperatures from 30 to 250° C.