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:
Oct. 13, 1981
Filed:
Feb. 26, 1980
Applicant:
Inventors:
Uwe Brede, Furth, DE;
Heinz Kern, Furth-Burgfarnbach, DE;
Assignee:
Dynamit Nobel Aktiengesellschaft, Postfach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
156627 ; 156638 ; 156656 ; 338308 ;
Abstract
A method for increasing the resistance of an igniter element of given geometry in an electrical circuit to a predetermined, specific value by the removal of resistance material, which comprises heating the resistance material situated between two acid-resistance electrodes simultaneously etching the resistance material with acid until the desired resistance value has been established.