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. 07, 1989
Filed:
Feb. 27, 1987
Applicant:
Inventors:
Roy W Chapel, Jr, Edmonds, WA (US);
David N Duperon, Lake Stevens, WA (US);
Joseph E Meadows, Redmond, WA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338195 ; 338308 ; 338 25 ;
Abstract
A compound resistor is formed of a resistive material making up a predominant portion of the resistance and having a small negative TCR coupled with an adjustment material having an extremely low resistance and a very high positive temperature coefficient of resistance. After the manufacturing process, a portion of the adjustment material is removed to adjust the composite TCR of the compound resistor substantially to zero without significantly affecting the resistance.
Chapel, Jr, Roy. (1989). Compound resistor and manufacturing method therefore (U.S. Patent No. 4803457). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4803457
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile