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. 26, 1998
Filed:
Mar. 24, 1995
Applicant:
Inventors:
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428688 ; 428689 ; 428697 ; 428699 ; 428701 ; 428702 ; 428632 ; 428633 ;
Abstract
An article for use at high temperatures and in corrosive environments comprising a substrate of refractory metal or alloy thereof. The substrate is coated with an interlayer followed by an optional preliminary coating and a final coating of a platinum group metal. The interlayer reduces oxidation of the substrate and prevents metallic interdiffusion between the final coating and substrate contributing both to an improved tolerance of the article to the working environment and reduced manufacturing costs.