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. 07, 1992
Filed:
Jun. 15, 1990
Applicant:
Inventors:
Gunilla E Gillberg-LaForce, Summit, NJ (US);
Edward Yokley, Somerset, NJ (US);
James E Kuder, Fanwood, NJ (US);
Elizabeth Fernekess, Basking Ridge, NJ (US);
Assignee:
Hoechst Celanese Corp., Somerville, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03H / ; G03C / ;
U.S. Cl.
CPC ...
430-2 ; 430290 ; 359-3 ;
Abstract
In one embodiment this invention provides a process for preparing a holographic composition which is a thin film of polyphenyl acylate polymer which has a photo-Fries molecular rearrangement corresponding to a recorded refractive index pattern induced by exposure to a coherent light interference pattern.