Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 4774017 | Thickening agent for detergent containing preparations A thickening agent comprising polyether derivatives of the general formula: ##STR1## wherein R1 is a substituted or unsubstituted hydrocarbon radical or an alkylphenol radical having 10 or more carbon atoms, n is 10 to 100, m is 0 to 25, a... | 09/27/1988 |
| 4727016 | Silver halide photographic light sensitive material having different sized silver halide emulsions in the same layer A photographic light-sensitive material comprising a support having provided thereon at least one silver halide emulsion layer is disclosed, which contains in said silver halide emulsion layer two silver halide emulsions which are different from each othe... | 02/23/1988 |
| 4725533 | Silver halide photographic material for wash-off relief image A silver halide photographic material forming a wash-off relief image comprising a support having provided thereon a layer containing a tanning developing agent such as catechol, hydroquinone or pyrogallol, emulsified and dispersed in a high boiling point... | 02/16/1988 |
| 4725529 | Developing inhibitor arrangment in light-sensitive silver halide color photographic materials There is disclosed a light-sensitive silver halide photographic material, having two or more light-sensitive silver halide emulsion layers different in color sensitivities on a support, at least two of the light-sensitive silver halide emulsion layers dif... | 02/16/1988 |
| 4724200 | Emulsions and photographic elements containing silver halide grains having icositetrahedral crystal faces Silver halide photographic emulsions are disclosed comprised of radiation sensitive silver halide grains of a cubic crystal lattice structure comprised of icositetrahedral crystal faces.... | 02/09/1988 |
| 4724198 | Light-sensitive silver halide color photographic material having multi-layered red-sensitive, green-sensitive and blue-sensitive emulsion layers There is disclosed a light-sensitive silver halide color photographic material having red-sensitive, green-sensitive and blue-sensitive emulsion layers, each layer consisting of two or more layers with different sensitivities on a support, wherein the lay... | 02/09/1988 |
| 4724199 | Silver halide photographic light sensitive materials A silver halide photographic light-sensitive material containing, in at least one layer thereof, a compound capable of releasing a fogging agent upon an oxidation-reduction reaction with an oxidation product of a developing agent under an alkaline conditi... | 02/09/1988 |
| 4719173 | Process for multistage contacting A novel process and apparatus for multistage contacting of two materials advantageously provides high chemical efficiency and low losses of components of one of the materials caused by that material being carried out of the process with the other material... | 01/12/1988 |
| 4717651 | Color photographic light-sensitive material A silver halide color photographic light-sensitive material is disclosed, containing: (1) a compound containing two units selected from the group represented by general formula (I) or (II) in the molecule, or (2) a polymer containing a group represented b... | 01/05/1988 |
| 4717647 | Method for processing silver halide photographic elements in a bleaching bath and a blixing bath A method for the processing of a silver halide color photographic element comprising imagewise exposing the element, color developing the exposed element, followed by de-silvering, characterized in that the de-silvering step comprises processing the devel... | 01/05/1988 |
| 4713321 | Process for preparing silver halide emulsion utilizing a photographically useful additive capable of being deactivated and a deactivating agent therefor and silver halide photographic material prepared by the process A process for preparing a silver halide photographic emulsion to be used for a photographic material is provided. Therein, additives such as dyes, sensitizers, auxiliary agents to be used upon gold sensitization, and so on are utilized within a period fro... | 12/15/1987 |
| 4713320 | Low methionine gelatino-peptizer tabular grain silver bromide and bromoiodide emulsions and processes for their preparation The present invention is directed to a process of precipitating for use in photography a thin, tabular grain silver bromide or bromoiodide emulsion employing a gelatino-peptizer comprised of less than 30 micromoles of methionine per gram and to an emulsio... | 12/15/1987 |
| 4711838 | Photographic elements sensitive to near infrared Photographic elements which may be imaged by laser scanners emitting in the near infrared without the formation of interference fringes comprising a support bearing one or more layers of a silver halide emulsion having grains of an average diameter of no ... | 12/08/1987 |
| 4710455 | Novel silver halide crystal and process for production of same Disclosed is silver halide cubic crystal having a depression on each face thereof and/or a hollow portion formed by joining of the depression with other depressions. This crystal may be produced by precipitating first monodisperse cubic type silver halide... | 12/01/1987 |
| 4708927 | Photographic elements with development inhibitor precursor A novel photographic element is disclosed. The element comprises a light-sensitive element including a light-sensitive silver halide emulsion layer coated on a support, wherein said silver halide emulsion layer or other photographic layers contain at leas... | 11/24/1987 |
| 4708810 | Oxidation resistant composition containing a benzothiazoline compound Benzothiazoline derivatives having the general formula: ##STR1## wherein R1 and R2 may be a hydrogen atom, a hydrocarbyl group, a substituted hydrocarbyl group, an amino group or a halogen atom, a hydroxyl group, alkoxy or arylo... | 11/24/1987 |
| 4707434 | Color image forming method comprising processing with a bleach-fixing solution Disclosed is a color forming method which comprises subjecting a light-sensitive silver halide color photographic material having a photographic constituent layer comprising blue-sensitive, green-sensitive and red-sensitive silver halide emulsion layers o... | 11/17/1987 |
| 4705744 | Color photographic materials having red color saturation and improved discrimination of green colors Silver halide color photographic materials comprising a support having thereon at least one blue-sensitive silver halide emulsion layer comprising a yellow dye-forming coupler, at least one green-sensitive silver halide emulsion layer comprising a magenta... | 11/10/1987 |
| 4705745 | Photographic materials and color proofing system A radiation-sensitive element for half tone color proofing adapted to be exposed by scanning with four independently modulated sources of radiation emitting at different wavelengths within the range 550 to 900 nm, the element comprising a substrate bearin... | 11/10/1987 |
| 4703000 | Anti-brick/anti-static compositions useful for treating film surfaces and films coated therewith Provided herewith is an anti-brick/anti-static composition useful for treating film surfaces. The composition comprises (i) an anionic or cationic surfactant exhibiting anti-static properties, and (ii) a similar charged inorganic particle, e.g., a negativ... | 10/27/1987 |
| 4702854 | Water-based hydraulic fluids comprising poly-oxazines or poly-oxazolines Substantially oil-free aqueous industrial fluids possess superior lubricating and wear preventing characteristics and are useful as hydraulic fluids and metalworking compositions. Fluids of the invention comprise (1) an aqueous liquid and (2) a water-solu... | 10/27/1987 |
| 4702998 | Processing solution for light-sensitive silver halide photographic material comprises metal complexes of large polyamine derivatives There are disclosed a processing solution having bleaching ability for use in light-sensitive silver halide photographic material, which comprises at least one selected from metal complexes of large cyclic polyamine derivatives and a method for processing... | 10/27/1987 |
| 4701397 | Method for forming images on plain paper and an imaging sheet useful therein An imaging sheet useful in forming images on plain paper, said sheet comprising a support having a plurality of photosensitive microcapsules and a developer-containing resin on the surface thereof, said microcapsules and said developer-containing resin be... | 10/20/1987 |
| 4701404 | Silver halide color photographic material of high sensitivity and improved granularity A silver halide color photographic material having blue-, green- and red-sensitive silver halide emulsion layers coated on a support is provided, each of said layers being composed of a plurality of sub-layers having different sensitivities. In said mater... | 10/20/1987 |
| 4698289 | Process for making ferrite spherical particulate toner core from raw fly ash A process for making a ferrite spherical particulate toner carrier core from a raw fly ash comprising recovering the magnetic particles from the non-magnetic particles of the raw fly ash; selecting a desired size for the particles of the raw fly ash and s... | 10/06/1987 |
| 4696893 | Color photographic material containing certain combinations of cyan and magenta couplers A silver halide color photographic material capable of providing color images having good coloring properties and being excellent in color reproducibility even in a developer using hard water, which contains a cyan coupler represented by formula (I) or (I... | 09/29/1987 |
| 4693956 | Process for high contrast development of photographic elements A process is disclosed for forming a high-contrast photographic image by developing a silver halide photographic element, including at least a silver halide emulsion layer, with an aqueous alkaline developing solution containing a dihydroxybenzene develop... | 09/15/1987 |
| 4692401 | Photographic emulsions and elements containing sensitizing dye in the form of host crystals A photographic emulsion is disclosed containing grains comprised of a silver salt capable of forming a latent image, a sensitizing dye, and a dispersing medium. The sensitizing dye is present in the form of host crystals, and the grains are in conductive ... | 09/08/1987 |
| 4690889 | Silver halide color photographic light-sensitive material containing novel cyan dye forming coupler A silver halide color photographic light-sensitive material containing a specific naphthol cyan dye forming coupler is disclosed. Dye images formed by this coupler are excellent in fastness to heat and light and in sharpness, and are free from adverse inf... | 09/01/1987 |
| 4690773 | Microbial enzymatic contact lens cleaner and methods of use Proteinaceous tear films and debris are removed from contact lenses with aqueous solutions of a protease derived from a Bacillus, Streptomyces, or Aspergillus microorganism. The solutions are substantially odor-free, non-allergenic, require no activator/s... | 09/01/1987 |
| 4691060 | Process for recovering waste heat from formaldehyde product gas Waste heat possessed by a hot formaldehyde product gas obtained by catalytic reaction of methanol with air is heat exchanged with pressurized water in a waste heat boiler, thereby generating steam, and then leading the product gas to a formaldehyde absorp... | 09/01/1987 |
| 4689292 | Silver halide photographic radiography light-sensitive material A silver halide photographic light-sensitive material having high sensitivity and high covering power, particularly suitable for use in radiography comprising on a support, a silver halide emulsion layer having silver halide grains which have a grain-size... | 08/25/1987 |
| 4687731 | Method for processing light-sensitive silver halide color photographic material which contains a high speed reactive yellow coupler by processing, after fixings, with a sulfite-containing solution and without substantial washing A method of processing a light-sensitive silver halide color photographic material comprising color developing an imagewise exposed light-sensitive silver halide color photographic material comprising a blue-sensitive silver halide emulsion layer, a green... | 08/18/1987 |
| 4686167 | Compositions comprising ethane dioic acid hydrazide compounds and derivatives useful as dot-promoting agents Disclosed are novel compounds of the formula: ##STR1## wherein: X=--NR5 R6, or --OR7 ; R1 and R2 are independently hydrogen, substituted or unsubstituted alkyl, haloalkyl, hydroxyalkyl alkoxyalkyl, al... | 08/11/1987 |
| 4686175 | Silver halide multi-layered color photographic light sensitive material A silver halide multilayered color photographic light-sensitive material is disclosed. The material is comprised of a support basde having thereon a green-sensitive emulsion layer having a maximum sensitivity of from 535 nm to 555 nm, a blue-sensitive emu... | 08/11/1987 |
| 4686178 | Silver halide photographic emulsion and a process for the preparation thereof A process for preparing a monodisperse core/shell type silver halide photographic emulsion comprising silver halide grains wherein the average silver iodide content in the grains is 0.5 to 10 mole % and each of the grains comprises a core portion having n... | 08/11/1987 |
| 4686176 | Multilayer multi-color photographic material In a light-sensitive silver halide photographic material having blue-sensitive, green-sensitive and red-sensitive photosensitive layers on a support and being capable of forming a multi-color image, the improvement wherein at least one of said photosensit... | 08/11/1987 |
| 4684602 | Multicolor laser recording method and element A method of generating visible multicolor images using a single wavelength laser beam is disclosed.... | 08/04/1987 |
| 4683193 | Process for producing silver halide photographic emulsion A process for producing a spectrally sensitized silver halide photographic emulsion is described, comprising adding a substantially water-insoluble spectral sensitizing dye in an aqueous carrier to an emulsion before completion of the formation of silver ... | 07/28/1987 |
| 4683186 | Doped amorphous silicon photoconductive device having a protective coating A photoconductive device including a conductive substrate, a photoconductive layer of amorphous silicon containing at least hydrogen and a surface protection layer applied on the photoconductive layer a dopant is added in the photoconductive layer at leas... | 07/28/1987 |
