"We are probably nearing the limit of all we can know about astronomy."
Simon Newcomb, astronomer ; 1888
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4199363 | Processes 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 |
| 4198478 | Method 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 |
| 4195999 | Silver 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 |
| 4191576 | Light-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 |
| 4173473 | Radiation 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 |
| 4163671 | Silver 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 |
| 4148648 | Diffusion 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 |
| 4106941 | Photographic 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 |
| 4053315 | Photodevelopable 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 |
| 4045229 | Novel 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 |
| 4025682 | Photographic 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 |
| 4015990 | Color 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 |
| 4004928 | Color 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 |
| 4003748 | Incorporation 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 |
| 3963499 | Photographic 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 |
| 3960560 | Method 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 |
| 3936305 | Color 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 |
| 3933501 | Photographic 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 |
| 3933500 | Color 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 |