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. 13, 1980
Filed:
Jan. 30, 1975
Applicant:
Inventors:
Herman A Philippaerts, Edegem, BE;
Robert J Pollet, Vremde, BE;
Wolfgang Muller-Bardorff, Cologne, DE;
Wilhelm Saleck, Schildgen, DE;
Anita von Konig, Leverkusen, DE;
Walter Gauss, Cologne, DE;
Franz Moll, Leverkusen-Stinbuchel, DE;
Theofiel H Ghys, Kontich, BE;
Assignee:
AGFA-GEVAERT N.V., Mortsel, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430-8 ; 430566 ; 430568 ; 430407 ; 430429 ; 430445 ;
Abstract
Fine-grain silver halide emulsions of the Lippmann-type are described which comprise derivatives of heterocyclic mercaptans corresponding to the formulae: ##STR1## wherein: each of Z.sub.1 and Z.sub.2 represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring system,