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:
May. 02, 1989
Filed:
Dec. 15, 1987
Applicant:
Inventors:
Trevor Groves, Northwich, GB;
David W Butcher, Goostrey, GB;
Assignee:
Ciba-Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03H / ; G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430-1 ; 430-2 ; 430393 ; 430419 ; 430430 ; 430460 ; 430461 ;
Abstract
Method of preparing a hologram which is of the silver halide in gelatin binder type, which method comprises exposing, developing and bleaching the holographic material, where a water-soluble halide and a ferric salt of an acetic acid derivative are used in the bleach bath.