Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Azo dyes, azo dye-releasing compounds and photographic products and processes employing them
T994003 Azo dyes, azo dye-releasing compounds and photographic products and processes employing them
Patent Drawings:

Inventor: Kilminster
Date Issued: May 6, 1980
Application: 06/077,876
Filed: September 21, 1979
Inventors: Kilminster; Kenneth N. (London, GB2)
Assignee:
Primary Examiner:
Assistant Examiner:
Attorney Or Agent:
U.S. Class: 430/242; 430/390; 430/562; 534/843; 534/863
Field Of Search:
International Class:
U.S Patent Documents:
Foreign Patent Documents:
Other References:









Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a novel releasable azo dye. The dyes are azophenols, or precursors of azophenols, and have an electron withdrawing group in one of the positions ortho to the phenolic hydroxy group and a carbamoyl electron withdrawing group in the other position ortho to the phenolic hydroxy group.
Claim:
Description:
 
 
  Recently Added Patents
Apoptosis inductor extracted from potato, potato foodstuff containing the inductor, and processed product thereof
Towel clip
Method and system of extending battery life of a wireless microphone unit
Molten alloy solidification analyzing method and solidification analyzing program for performing the same
Glove
Gestures for presentation of different views of a system diagram
Apparatus and method for image reconstruction and CT system
  Randomly Featured Patents
Arrangement for a bottle handling machine
Financial document processing module
System and method for dynamic processor core and cache partitioning on large-scale multithreaded, multiprocessor integrated circuits
Inlet valve assembly for central vacuum system
Wave shape chemical analysis apparatus and method
Substrate for packaging a semiconductor device having particular terminal and bump structure
System and method for detecting media and transport degradation during multichannel recording
Audio power amplifier
Folding device for an automatic sewing machine
Series coupled filters where the first filter is a dielectric resonator filter with cross-coupling