Patent · US Expired

Method of producing a hardened gelatin layer using aqueous solution of a 2-halogeno pyridinium compound

US3951940A · kind A · utility

3Cited by
5References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 30, 1974
Grant dateApr 20, 1976
Priority date—
Expiry dateSep 30, 1994

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03C1/30
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

This invention relates to the hardening of gelatin layers. The gelatin is heated with an aqueous solution of a 2-halogeno pyridinium compound.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.