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. 27, 1990
Filed:
Aug. 31, 1988
Applicant:
Inventors:
Donald F Shepard, Evergreen, CO (US);
Robert J Fenolia, Broomfield, CO (US);
Assignee:
Martin Marietta Corporation, Bethesda, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ;
U.S. Cl.
CPC ...
204 371 ; 126901 ; 204 376 ; 204 41 ; 428469 ;
Abstract
The present invention resides in the discovery that an optically black electroplated cobalt/cobalt oxide surface which has been anodized and then preferably calcined has both a high emissivity and high absorptivity, and is stable against loss of absorptivity at temperatures of more than 450.degree. C. for prolonged periods. Preferably, the optically black cobalt oxide surfaces of the present invention have an absorptivity of at least about 0.96 and an emissivity of at least about 0.6.