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:
Jul. 27, 1976
Filed:
Mar. 03, 1975
Applicant:
Inventors:
James L Brandt, Monroeville, PA (US);
William King, Lower Burrell, PA (US);
James Dean Minford, New Kensington, PA (US);
Clement E Valchar, Lower Burrell, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
148-627 ; 427372 ; 427160 ;
Abstract
A selective black coating on aluminum is provided which is characterized by a high absorptivity in the visible and near infrared regions of the spectrum (0.38 to 1.9 microns) and a low emissivity for radiation of longer-(infrared)-wavelength (greater than 6 microns). The black or near black coating is applied by immersing the aluminum in a bath containing soluble borate and silicate salts.