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. 22, 1994
Filed:
Mar. 08, 1993
Applicant:
Inventor:
Tomoharu Kondo, Toki, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; F01N / ;
U.S. Cl.
CPC ...
219552 ; 392485 ; 392488 ; 422174 ;
Abstract
A resistance-adjusting-type heater including a honeycomb structure having a large number of passages and at least two electrodes provided on the honeycomb structure for energizing the honeycomb structure. The honeycomb structure has a slit or slits which form a predetermined angle to the partition walls of the honeycomb structure so as to enable adjustment of resistance between the electrodes, so that gas flowing through the passages of the honeycomb structure is heated.