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:
Jan. 18, 1994
Filed:
Apr. 30, 1992
Applicant:
Inventors:
G Kelly Sievers, Santa Clarita, CA (US);
Rajan K Bamola, Burbank, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175374 ; 175307 ; 175426 ;
Abstract
Drill bits having projecting inserts are completely coated with refractory material including on the edge margins about the inserts by thermally spraying with refractory particles whose particulate constituent under the spraying conditions is able to penetrate the inserts. Completely coated drill bits are provided.
Sievers, G. (1994). Downhole drill bit cone with uninterrupted refractory coating (U.S. Patent No. 5279374). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5279374
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile