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:
Sep. 20, 1983
Filed:
Dec. 04, 1981
Applicant:
Inventor:
Frederick G Yamagishi, Newbury Park, CA (US);
Assignee:
Hughes Aircraft Company, El Segundo, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B05D / ; G02B / ;
U.S. Cl.
CPC ...
428696 ; 350 16 ; 427 41 ; 427160 ;
Abstract
Alkali halide crystals are passivated by a chemical surfactant and overcoated with a plasma polymerized saturated hydrocarbon film to render them suitable for use as optical elements exposed to high humidity and abrasive environmental conditions. These crystals are continuously transmissive to light in the IR.