...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 5610003 | Two-equivalent magenta photographic couplers with activity-modifying ballasting groups An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a two-equivalent 5-pyrazolone magenta-dye-forming coupler. The coupler has a coupling-off group in the 4-position and an act... | 03/11/1997 |
| 5597681 | Imaging element comprising an electrically-conductive layer and a protective overcoat layer containing solvent-dispersible polymer particles Imaging elements, such as photographic films and papers, are comprised of a support, an image-forming layer, an electrically-conductive layer and a protective overcoat layer that overlies the electrically-conductive layer. The protective overcoat layer is... | 01/28/1997 |
| 5597680 | Imaging element comprising an auxiliary layer containing solvent-dispersible polymer particles Imaging elements, such as photographic films and papers, are comprised of a support, an image-forming layer and at least one auxiliary layer containing solvent-dispersible polymer particles. The auxiliary layer is coated from a dispersion of core/shell po... | 01/28/1997 |
| 5576163 | Imaging element having a process-surviving electrically-conductive layer with polyesterionomet binder Imaging elements, such as photographic, electrostatographic and thermal imaging elements are comprised of a support, an image-forming layer and an electrically-conductive layer comprised of a vanadium pentoxide colloidal gel, a polyesterionomer binder and... | 11/19/1996 |
| 5561036 | Photographic elements containing scavengers for oxidized developing agent An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a hydroquinone compound that functions as a scavenger for oxidized developing agent. The hydroquinone compound has sufficien... | 10/01/1996 |
| 5561035 | Photographic elements containing scavengers for oxidized developing agent An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a pyrocatechol compound that functions as a scavenger for oxidized developing agent. The pyrocatechol compound has sufficien... | 10/01/1996 |
| 5558977 | Imaging element comprising a transparent magnetic layer and a transparent electrically-conductive layer Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer, a transparent magnetic layer comprising magnetic particles dispersed in a film-forming binder and a transparent e... | 09/24/1996 |
| 5543273 | Radiation-sensitive photographic plates and improved method for manufacture thereof Radiation-sensitive photographic plates are prepared by laminating to a rigid transparent plate support a photographic element comprised of a flexible photographic film support having a radiation-sensitive silver halide emulsion layer on one side thereof ... | 08/06/1996 |
| 5543277 | Photographic elements containing scavengers for oxidized developing agent An improved photographic element comprises a support bearing at least-one silver halide emulsion layer having associated therewith a hydrazide compound that functions as a scavenger for oxidized developing agent. The hydrazide compound comprises at least ... | 08/06/1996 |
| 5534397 | Electron beam recording film with low visual and ultraviolet density An imaging element for use in an electron-beam-recording process is comprised of a film support having, in order, on one side thereof a conductive layer comprising vanadium pentoxide, an adhesion-promoting hydrophilic colloid layer and an imaging layer. T... | 07/09/1996 |
| 5532119 | High-speed direct-positive photographic elements utilizing core-shell emulsions Direct-positive photographic elements are comprised of a support and a silver halide emulsion layer containing core-shell silver halide grains comprising a chemically sensitized core and a chemically sensitized shell, wherein at least one of the core and ... | 07/02/1996 |
| 5518867 | Electron beam recording process utilizing an electron beam recording film with low visual and ultraviolet density An electron-beam-recording process comprises the steps of (1) providing an electron-beam-recording element, (2) introducing the element into a vacuum chamber, (3) imagewise exposing the element within the vacuum chamber to an electron beam and (4) process... | 05/21/1996 |
| 5516458 | Coating composition used to prepare an electrically-conductive layer formed by a glow discharge process containing tin carboxylate, antimony alkoxide and film-forming binder Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer and an electrically-conductive layer produced bycoating a layer comprised of a metallo-organic compound and a film... | 05/14/1996 |
| 5514535 | Stabilized vinyl sulfone hardening compositions useful in photographic manufacturing Hydrophilic colloids, such as gelatin, which are employed in the manufacture of photographic elements are commonly treated with a hardening composition, among the most useful of which are hardening compositions containing vinyl sulfone hardening agents su... | 05/07/1996 |
| 5512415 | High contrast photographic silver halide material A high-contrast photographic element, adapted for use in the field of graphic arts, includes a hydrazide nucleator and an amine booster and comprises a silver halide emulsion layer which is capable of forming a latent image under conditions of use and a s... | 04/30/1996 |
| 5510236 | Spectrally sensitized photothermographic elements Improved photothermographic elements are spectrally sensitized with cyanine dyes that provide efficient sensitization together with excellent keeping stability and low dye stain. The photothermographic elements comprise a photosensitive silver halide, an ... | 04/23/1996 |
| 5508162 | Photothermographic elements containing a combination of spectral sensitizers Improved photothermographic elements are spectrally sensitized with a combination of cyanine dyes that provides efficient sensitization together with excellent keeping stability and low dye stain. The photothermographic elements comprise a photosensitive ... | 04/16/1996 |
| 5508135 | Imaging element comprising an electrically-conductive layer exhibiting improved adhesive characteristics Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer and an electrically-conductive layer comprising electrically-conductive metal-containing particles dispersed in a ... | 04/16/1996 |
| 5494652 | Method for preparing particles of metal oxide (tin oxide) A fine metal oxide powder is prepared by a method comprising the steps of (1) preparing a hydroxide precursor of a metal oxide, (2) mixing the precursor with an inorganic compound having a melting point lower than the crystallization temperature of the me... | 02/27/1996 |
| 5491046 | Method of imaging a lithographic printing plate A lithographic printing plate that has an imaging layer that comprises an admixture of (1) a resole resin, (2) a novolac resin, (3) a latent Bronsted acid and (4) an infrared absorber; that is sensitive to both ultraviolet and infrared radiation; and that... | 02/13/1996 |
| 5484694 | Imaging element comprising an electrically-conductive layer containing antimony-doped tin oxide particles Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer and an electrically-conductive layer comprising a dispersion in a film-forming binder of very small particles of a... | 01/16/1996 |
| 5478712 | Photographic elements protected against color contamination and dye stain A ballasted amine is incorporated in a silver halide photographic element which contains a 2,4-disulfonamidophenol which functions as a scavenger for oxidized developing agent. The 2,4-disulfonamidophenol serves to avoid color contamination while the ball... | 12/26/1995 |
| 5466559 | Aqueous developer for lithographic printing plates which exhibits reduced sludge formation Aqueous alkaline developing compositions useful in the development of negative-working lithographic printing plates are comprised of an organic solvent, an anionic surface active agent, an alkali metal tetraborate, an aliphatic monocarboxylic acid, an ali... | 11/14/1995 |
| 5466567 | Imaging element comprising an electrically-conductive layer containing conductive fine particles, a film-forming hydrophilic colloid and pre-crosslinked gelatin particles Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer and an electrically-conductive layer comprising a film-forming hydrophilic colloid having dispersed therein both e... | 11/14/1995 |
| 5466557 | Radiation-sensitive composition containing a resole resin, a novolac resin, a latent bronsted acid, an infrared absorber and terephthalaldehyde and use thereof in lithographic printing plates A radiation-sensitive composition especially adapted to prepare a lithographic printing plate that is sensitive to both ultraviolet and infrared radiation and capable of functioning in either a positive-working or negative-working manner is comprised of (... | 11/14/1995 |
| 5457011 | Photographic developing composition containing a sludge inhibiting agent and use thereof in the high contrast development of nucleated photographic elements An improved photographic developing composition, for use in development of a black-and-white silver halide photographic element, is comprised of at least one developing agent and, in an amount sufficient to inhibit sludge deposition, a polyoxyalkylated ph... | 10/10/1995 |
| 5457013 | Imaging element comprising a transparent magnetic layer and an electrically-conductive layer containing particles of a metal antimonate Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer, a transparent magnetic layer comprising magnetic particles dispersed in a film-forming binder and an electrically... | 10/10/1995 |
| 5447234 | Recyclable/reusable containers for packaging graphical sheet materials Photographic film, paper, etc. in sheet form is packaged in recyclable containers or cases for reuse by returning to suppliers for filling. Containers obviate disposal problems and high costs associated with customary two-part set-up box and interior padd... | 09/05/1995 |
| 5422234 | Thermally processable imaging element including an adhesive interlayer comprising a polymer having epoxy functionality Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The... | 06/06/1995 |
| 5418120 | Thermally processable imaging element including an adhesive interlayer comprising a polyalkoxysilane Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The... | 05/23/1995 |
| 5412075 | Control of methionine content in photographic grade gelatin The method for preparing high grade gelatin with a specific methionine content and with reduced methionine variability from batch to batch and within a single extraction includes controlling the amount of and variability of oxidant present during processi... | 05/02/1995 |
| 5411856 | Carbamyl-substituted bis(vinylsulfonyl) methane hardeners Novel compounds represented by formula (I) ##STR1## wherein R1 and R2 represent hydrogen or alkyl, R3 represents hydrogen, alkyl, substituted alkyl or CONR1 R2, and n is 0 to 6, can be used to ha... | 05/02/1995 |
| 5393649 | Thermally processable imaging element including an adhesive interlayer comprising a polymer having pyrrolidone functionality Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The... | 02/28/1995 |
| 5385819 | Preparation of thin tabular grain silver halide emulsions using synthetic polymeric peptizers A process for preparing a thin tabular grain silver halide emulsion comprised of silver halide grains which have a halide content of at least 50 mole percent bromide, wherein tabular grains of less than 0.15 micrometers in thickness and having an aspect r... | 01/31/1995 |
| 5380623 | Aqueous developer for lithographic printing plates which provides improved oleophilicity Aqueous alkaline developing compositions useful in the development of negative-working lithographic printing plates are comprised of an organic solvent, an anionic surface active agent, an alkali metal tetraborate, an aliphatic monocarboxylic acid, an ali... | 01/10/1995 |
| 5380584 | Imaging element for use in electrostatography An electroconductive imaging element, that is especially useful in a high speed laser printing process utilizing electrostatography, is comprised of an insulating support, an electrically-conductive layer overlying the support and a thermoplastic dielectr... | 01/10/1995 |
| 5380642 | Process for preparing a thin tabular grain silver halide emulsion A process for preparing a thin tabular grain silver halide emulsion comprised of silver halide grains which have a halide content of at least 50 mole percent bromide, wherein tabular grains of less than 0.15 micrometers in thickness and having an aspect r... | 01/10/1995 |
| 5376518 | Photographic element provided with a backing layer and method for manufacture thereof A photographic element that is useful as an imaging master in the field of graphic arts is comprised of a dimensionally-stable polyester film having a radiation-sensitive silver halide emulsion layer on one side thereof and having on the opposite side, in... | 12/27/1994 |
| 5374497 | Donor element for use in a dry color proofing process A print-out layer is incorporated in a donor element that is useful in a dry color proofing process in which a colored image is transferred from the donor element to a receiver. To achieve full color reproduction, images are transferred in succession and ... | 12/20/1994 |
| 5372907 | Radiation-sensitive composition containing a resole resin and a novolac resin and use thereof in lithographic printing plates A radiation-sensitive composition especially adapted to prepare a lithographic printing plate that is sensitive to both ultraviolet and infrared radiation and capable of functioning in either a positive-working or negative-working manner is comprised of (... | 12/13/1994 |