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:
Mar. 18, 2003
Filed:
Jul. 12, 2000
Applicant:
Inventors:
Hiromichi Kawakami, Moriyama, JP;
Toshiki Tanaka, Otsu, JP;
Shizuharu Watanabe, Omihachiman, JP;
Hiroshi Takagi, Otsu, JP;
Assignee:
Murata Manufacturing Co. Ltd, , JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/00 ;
U.S. Cl.
CPC ...
B32B 3/00 ;
Abstract
A crystallized glass composition contains a principal ingredient comprising SiO , MgO and Al O and contains about 2 to 20 parts by weight of B O relative to 100 parts by weight of the principal ingredient. In a ternary diagram, the weight ratio (SiO , MgO, Al O ) lies within a region surrounded by point A (44.0, 55.0, 1.0), point B (34.5, 64.5, 1.0), point C (35.0, 30.0, 35.0) and point D (44.5, 30.0, 25.5).