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. 26, 1988
Filed:
Apr. 06, 1987
Applicant:
Inventors:
Assignee:
Ciba-Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03H / ;
U.S. Cl.
CPC ...
350-361 ; 430-1 ; 430-2 ;
Abstract
Holographic material comprising on a light transparent base at least two silver halide emulsion layers wherein the shrinking factor SF, the ratio of the replay wavelength or the ratio of the thicknesses of the layer before and after processing, of each of the layers differs at least by 0.02.