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:
Nov. 02, 1976
Filed:
Apr. 25, 1975
Applicant:
Inventor:
Allen E Wisler, Houston, TX (US);
Assignee:
Hughes Tool Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; E21C / ;
U.S. Cl.
CPC ...
285333 ; 291828 ; 29195 ; 7512 / ; 148 34 ; 148 315 ; 175374 ;
Abstract
A metallurgical composition especially suitable for use as a hardfacing to increase the wear resistance of manufactured articles, such as for example tool joints used in earth drilling operations. This composition has cemented tungsten carbide particles dispersed in a matrix of air hardening alloy steel. Included in the alloy steel are carbon, chromium, molybdenum and vanadium. For weldability, manganese and silicon are added. Also disclosed are suitable ranges of proportions of constituents.
Wisler, Allen. (1976). Composite hardfacing of air hardening steel and particles of tungsten (U.S. Patent No. 3989554). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3989554
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile