Method for optical bleaching coated papers
United States Patent 3047390
US Patent References:
Silver halide emulsions for black and white prints containing brightening agents
- - 2723197
Silver halide emulsions for black and white prints containing brightening agents
- - 2723197
Inventors:
Karel, Koerber Willem
Leonard, Schouteden Ferdinand
Leonard, Schouteden Ferdinand
Publication Date:
07/31/1962
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Export Citation:
Assignee:
GEVAERT PHOTO PROD NV
Primary Class:
Other Classes:
252/301.220, 252/301.230, 252/301.210
International Classes:
C08K5/3447; C08K5/35; D21H19/52; D21H19/56; D21H19/60; D21H19/62; D21H21/30; G03C1/815; C08K5/00; D21H19/00; D21H21/14
Foreign References:
| FR878823A | ||||
| NL58372C |