Compositions containing leuco xanthene dyes and suitable activators
United States Patent 3272635
US Patent References:
Photochemical preparation of stable dyes
- - 2441561
Photochemical process
- - 2895892
Photographic process
- - 2981622
Photographic process and composition including leuco triphenylmethane dyes
- - 3121632
Photochemical preparation of stable dyes
- - 2441561
Photochemical process
- - 2895892
Photographic process
- - 2981622
Photographic process and composition including leuco triphenylmethane dyes
- - 3121632
Inventors:
Sprague, Robert H.
Stewart, John A.
Lewis, James M.
Stewart, John A.
Lewis, James M.
Publication Date:
09/13/1966
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Export Citation:
Assignee:
HORIZONS INC
Primary Class:
Other Classes:
204/901, 546/107, 430/343, 430/531
International Classes:
G03C1/73