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Class 430/512 - Filters ultraviolet radiation


Subclass of Class 430 - Radiation imagery chemistry: process, composition, or product thereof
Definition: Subject matter containing a layer which selectively blocks
No. of patents: 499
Last issue date: 08/12/2008


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NumberTitleIssue Date
4199363Processes for achieving uniform, efficient distribution of hydrophobic materials through hydrophilic colloid layers and loaded latex compositions
An improved process is disclosed for uniformly dispersing hydrophobic materials through a hydrophilic colloid layer such as, for example, a photographically useful layer containing gelatin. The process over which the present invention is a valuable improv...
04/22/1980
4198478Method for dispersing a photographic additive
A method for dispersing an oil-soluble photographic additive which comprises dissolving the additive in an organic solvent and dispersing the resulting solution of the photographic additive in water or a hydrophilic colloid composition in the presence of ...
04/15/1980
4195999Silver halide photographic material containing ultraviolet light absorbing agent
A silver halide photographic material comprising a support having thereon at least one silver halide photographic emulsion layer with the silver halide photographic material containing, as an ultraviolet light absorbing agent, at least one compound having...
04/01/1980
4191576Light-sensitive silver halide photographic element containing UV absorber
A light-sensitive silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, with the silver halide photographic material containing at least one compound represented by the following...
03/04/1980
4173473Radiation sensitive compositions containing pyrylium compounds
Pyrylium, thiapyrylium and selenapyrylium salts and derivatives thereof having a trimethine linkage containing an aryl substituent attached to at least one carbon atom of the trimethine linkage are disclosed. Radiation sensitive compositions, e.g., photoc...
11/06/1979
4163671Silver halide photographic material containing ultraviolet light absorbing agent
A silver halide photographic material comprising a support having thereon at least one photosensitive silver halide emulsion layer with the silver halide photographic material containing at least one compound, as an ultraviolet absorbing agent, represente...
08/07/1979
4148648Diffusion transfer elements comprising U V light absorbers
Improved diffusion transfer products having a light-reflecting layer which includes a U V absorber dispersed in the layer....
04/10/1979
4106941Photographic silver halide elements containing optical brightening water-soluble interpolymers
Interpolymers from monomers containing optical brightening moieties and solubilizing groups are useful in optical brightening compositions. Photographic elements containing these optical brightening compositions have excellent light stability....
08/15/1978
4053315Photodevelopable silver halide material
Direct-print images of improved stability against prolonged light-exposure are obtained in a photodevelopable element by spectrally sensitizing the photodevelopable emulsion, providing in the emulsion layer or a superposed layer a compound absorbing radia...
10/11/1977
4045229Novel UV absorbing compounds and photographic elements containing UV absorbing compounds
1-Amino-4-cyano-1,3-butadiene compounds of the formula ##STR1## WHEREIN N IS 1 OR 2, WHEN N IS 1 R1 and R2 can be the same or different and represent hydrogen, alkyl including substituted alkyl, aryl including substituted aryl o...
08/30/1977
4025682Photographic products
Integral negative-positive patterns viewable without separation of the negative-positive components. Essential elements of such film units comprise a photosensitive system which after exposure and processing can provide a diffusion transfer image pattern,...
05/24/1977
4015990Color photographic lightsensitive material
A tocopherol derivative represented by the general formula, ##STR1## wherein R, R1 and R2 represent individually a hydrogen atom or a methyl group; and R3 represents a straight chain or branched-chain alkyl group havi...
04/05/1977
4004928Color photographic material
Use of the compounds represented by the general formula; ##STR1## (wherein R represents an alkyl group of 1 - 8 carbon atoms) as a permanent solvent for color coupler or ultraviolet ray absorber in color photographic materials....
01/25/1977
4003748Incorporation process
A photographic silver halide material with at least one halide emulsion layer and at least one substance in heterogeneous contribution emulsified in oilformer compounds and a process of preparing the said photographic silver halide materials. The substanc...
01/18/1977
3963499Photographic light-sensitive material
A photographic light-sensitive material comprising a support having thereon a hydrophilic colloid layer containing at least two surface active agents selected from the group consisting of compounds represented by the general formula (I) ##EQU1## ...
06/15/1976
3960560Method for producing a photomask
A method for producing a photomask, by exposing and development-processing a photographic material including a transparent support having thereon a masking layer and a silver halide emulsion layer to thereby form a silver image, etch-bleaching the silver ...
06/01/1976
3936305Color photographic photosensitive material containing ultraviolet ray-absorbing compound
Compounds represented by the following general formula are extremely effective as ultraviolet ray-absorbing agent, especially, for color photographic photosensitive materials. ##SPC1## (wherein R1 is an alkyl group having 1 to 13, preferably 5 ...
02/03/1976
3933501Photographic elements containing color-forming couplers having and inhibiting effect upon the reactivity of competing couplers
Color photographic elements containing silver halide and incorporated color-forming materials are described. These elements contain at least two differentially light-sensitive emulsion layers, the overlying layer being sensitive to the relatively shorter ...
01/20/1976
3933500Color photographic light-sensitive material
A color photographic silver halide light-sensitive material which comprises a support having thereon at least two light-sensitive layers, at least one of said layers containing a compound capable of coupling with an oxidation product of a color developing...
01/20/1976
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