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. 17, 1990
Filed:
Jun. 22, 1989
Applicant:
Inventors:
Dalen E Keys, Wilmington, DE (US);
William K Smothers, Hockessin, DE (US);
Albert F Harrington, Claymont, DE (US);
Jacob Beutel, Hockessin, DE (US);
Scott R Schicker, Logan, UT (US);
Dillion F Scofield, Newark, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03H / ; G03C / ;
U.S. Cl.
CPC ...
430-1 ; 430-2 ; 430281 ; 430912 ; 350-361 ; 350-365 ; 350-37 ;
Abstract
Improved holographic optical elements are disclosed that contain a reflection hologram. Also, an improved process for forming reflection hologram.