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:
Feb. 06, 1990
Filed:
May. 01, 1988
Applicant:
Inventors:
Assignee:
Ciba-Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; A23L / ;
U.S. Cl.
CPC ...
430523 ; 430531 ; 430640 ; 430642 ; 430905 ; 430539 ;
Abstract
This invention relates to layers for photographic materials, which comprises a polysaccharide which is formed extracellularly by bacterial fermentation of glucose, maltose, sucrose or xylose, if appropriate in the presence of yeast, yeast hydrolysate or casein-hydrolysate, and with mono-, di- and/or tri-valent metal ions, forms gels having a solidification temperature between 24.degree. and 25.degree. C. Gellan gum has proved to be a particularly advantageous polysaccharide for use in the layers according to the invention.