Silver halide multilayer color photographic material

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6518005
APP PUB NO 20020031735A1
SERIAL NO

09877467

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention refers to photographic elements having, coated on a support base, at least one silver halide emulsion layer sensitized to a radiation different from the blue one in addition to its intrinsic sensitivity to the blue region, and a yellow filter layer positioned between said at least one silver halide emulsion layer and the exposure source, where such yellow filter layer contains a yellow filtering dye represented by the formula (1): ##STR1## wherein R and R.sub.1 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkylene group, a substituted or unsubstituted heterocyclic group or a substituted or unsubstituted aryl group; R.sub.2, R.sub.3 and R.sub.4 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group and R.sub.3 and R.sub.4 may be combined to form a 6-membered ring.

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Patent Owner(s)

Patent OwnerAddress
PARCO TECNOLOGICO VAL BORMIDA S R LVIALE DELLA LIBERTA 57 FRAZIONE FERRANIA CARIO MONTENOTTE

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Biavasco, Raffaella Savona, IT 11 34
Cavalleri, Piero Pieve Di Teco, IT 2 4
Parodi, Stefano Pont Saint Martin, IT 7 7

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