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:
Feb. 27, 1996
Filed:
Feb. 03, 1995
Applicant:
Inventors:
Assignee:
Figaro Engineering Inc., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ; H05K / ; G01N / ;
U.S. Cl.
CPC ...
73 232 ; 73 3106 ; 29840 ; 29DI / ; 29DI / ; 361707 ; 361807 ;
Abstract
An alumina substrate has a front surface with a semiconductor gas sensor main body attached thereon for specific detection of a surface exposed gas, and has a rear surface formed with a glass layer and a gold paste layer as superposed on the surface, and bonded to a gold plating layer on a frame by parallel gap welding. The gold paste layer is welded to the gold plating layer with the heat of welding. The glass layer prevents transmission of thermal impact of die bonding to the substrate.