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:
Nov. 03, 1987
Filed:
Mar. 18, 1987
Applicant:
Inventor:
Arnd Kriebel, Marly, CH;
Assignee:
Ciba-Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430406 ; 430603 ; 430605 ; 430567 ; 430569 ; 430570 ; 430940 ;
Abstract
Photographic direct-positive emulsions with silver halide crystals of layered structure are prepared. The silver halide crystals of these emulsions can form a latent internal image and are superficially converted to silver iodide. Normal surface developers are suitable for developing.