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:
Nov. 25, 2014
Filed:
Mar. 26, 2010
Applicants:
Shinichi Tachizono, Narita, JP;
Kei Yoshimura, Inba, JP;
Yuji Hashiba, Narita, JP;
Takashi Naito, Funabashi, JP;
Takuya Aoyagi, Hitachi, JP;
Inventors:
Shinichi Tachizono, Narita, JP;
Kei Yoshimura, Inba, JP;
Yuji Hashiba, Narita, JP;
Takashi Naito, Funabashi, JP;
Takuya Aoyagi, Hitachi, JP;
Assignee:
Hitachi Powdered Metals Co., Ltd., Chiba, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/21 (2006.01); C03C 8/18 (2006.01); H01L 31/0224 (2006.01); C03C 8/08 (2006.01);
U.S. Cl.
CPC ...
H01L 31/022425 (2013.01); Y02E 10/50 (2013.01); C03C 3/21 (2013.01); C03C 8/18 (2013.01); H01J 2211/366 (2013.01); C03C 8/08 (2013.01);
Abstract
A glass composition according to the present invention comprises: phosphorus, vanadium and at least one transition metal selected from a group consisting of tungsten, iron, and manganese, the glass composition not containing substances included in the JIG level A and B lists, a softening point of the glass composition being 550° C. or lower.