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:
May. 12, 1992
Filed:
Sep. 25, 1990
Applicant:
Inventors:
Knut Horvei, Sandnes, NO;
Jonas S Sandved, Sandnes, NO;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428632 ; 428633 ; 428679 ; 428472 ; 428687 ; 501132 ;
Abstract
A ceramic chromium oxide coating produced by applying a conventional chromium oxide coating to a substrate and wholly or partly fusing the conventional chromium oxide coating by subjecting the chromium oxide coating to laser irradiation. The chromium oxide coating can optionally contain silica and/or alumina and less than 1 percent of metal. The chromium oxide coating can be employed for the internal and/or external protection of components in equipment for production and transport of oil and gas under water.