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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Holstead; Colin
Address:
Abbots, GB2
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4142901 Photographic materials comprising azo sensitizing dyes March 6, 1979
Certain azo compounds are useful as spectral sensitizing dyes in photographic silver halide materials, and particularly in photothermographic materials. These azo compounds comprise moieties capable of forming substantially insoluble silver salts thereby substantially improving sensi










 
 
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