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. 02, 1986
Filed:
Mar. 29, 1984
Applicant:
Inventors:
George R Cogar, Frankfort, NY (US);
Robert E Markle, Rancho Palos Verdes, CA (US);
Assignee:
Permanent Images, Inc., Herkimer, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430320 ; 430272 ; 430275 ; 430278 ; 430321 ; 430322 ; 430325 ; 430326 ; 430357 ; 430367 ; 430374 ; 430524 ; 430525 ; 430526 ;
Abstract
Permanent gray-scale reproductions including half-tone images. A refractory background region bears refractory thin-film dichroic filter means patterned to conform to the reproduced half-tone image. Preferred background region materials include metals, semiconductors, and ceramics; the thin-film materials are preferably oxides or nitrides of metals and semiconductors. If the refractory materials are appropriately selected, the reproductions are highly resistant to chemical and thermal deterioration and should have useful lives in the hundreds of thousands of years.