Patents Examined by Amelia B. Yarbrough
  • Non-abrasive metal cleaning agent
    Patent number: 4561895
    Abstract: The present invention relates to a non-abrasive metal polish or cleaning agent for objects, particularly household objects and ornaments, having surfaces of copper, silver, or chromium or of any alloy which is comprised of these metals either separately or together. The polish is characterized in that it comprises an aqueous solution containing 1-3% by weight nitric acid and 5-10% by weight thiourea or a derivative thereof.
    Type: Grant
    Filed: November 9, 1983
    Date of Patent: December 31, 1985
    Inventor: Jan-Olof Eriksson
  • Pigment toners with improved transparency
    Patent number: 4561899
    Abstract: Yellow crystal stable pigment of mono-azo type having an average particle size of 0.02 to 0.8 .mu.m, the pigment having on its surface a crystal growth inhibitor compound having substantially similar chemical structure as the pigment, being more soluble than the pigment in solvents used to disperse the pigment, the inhibitor compound not fitting within the crystal lattice of the pigment. The crystal growth of pigment dispersions due to Ostwald ripening can be prevented by adding a crystal growth inhibitor as noted above to the pigment dispersion. The pigments can be dispersed in an organic polymeric binder, e.g., cellulose acetate, to form yellow toners which are useful in toning photosensitive color proofing systems.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: December 31, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Howard Matrick
  • Modifier for paving asphalt
    Patent number: 4560414
    Abstract: A modifier for paving asphalt, which comprises Trinidad Epure having a maximum size of less than 25 mm and a pulverulent solid having a maximum size of less than 2.5 mm, the powder comprising essentially a substance having a higher softening point than Trinidad Epure and compatibility with paving petroleum asphalt, wherein the volume of the powdery solid is 0.8 to 2.8 times the void volume of the granulated Trinidad Epure when in the stored state.
    Type: Grant
    Filed: January 17, 1984
    Date of Patent: December 24, 1985
    Assignee: Nippon Hodo Co., Ltd.
    Inventors: Shinko Kikegawa, Takao Arai, Norio Yamamoto, Kiyoharu Ozaki
  • Recording liquid
    Patent number: 4557761
    Abstract: A recording liquid comprising coloring matter, which is an image-forming component, and a liquid medium for dissolving or dispersing the coloring matter, the recording liquid being characterized by containing at least one of the dyes represented by the following general formula (A), as an image-forming component,Q.sup.1 -N=N--Q.sup.2 --N=N--Q.sup.3 (A)wherein Q.sup.1 and Q.sup.3 each represent a substituted phenyl or naphthyl group having at least one SO.sub.3 M substituent and Q.sup.2 represents a substituted naphthyl group having at least one SO.sub.3 M substituent, M being a base selected from Na, K, Li, NH.sub.4, and amine salt cations.
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: December 10, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masatsune Kobayashi, Tsuyoshi Eida, Shoji Koike, Yasumasa Yokoyama, Tomoko Komori
  • Use of humates in printing inks
    Patent number: 4556427
    Abstract: Stabilized, aqueous dispersions of humate are disclosed as printing inks. Humate is disclosed as a compatible and functional component in all printing ink formulations.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: December 3, 1985
    Assignee: Union Camp Corporation
    Inventor: Harry D. Lewis
  • Modified asphalt
    Patent number: 4554023
    Abstract: Bis-stearoylamide is blended into asphalt, either natural or petroleum derived, to reduce the viscosity of the asphalt while maintaining its viscosity and, hence, its saturant properties.
    Type: Grant
    Filed: November 29, 1983
    Date of Patent: November 19, 1985
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Richard T. Janicki
  • Letterpress printing ink
    Patent number: 4554019
    Abstract: A non-petroleum base newspaper letterpress printing ink comprising a blend of Gilsonite (uintaite) flakes and tall oil fatty acid together with carbon black pigment. The proportions of the Gilsonite and the tall oil fatty acid may be varied, as viscosity requirements change due to differences in press speeds, newsprint characteristics, and the like. The ink thus has readily adjustable viscosity, together with an enhanced flow and penetration characteristics, while being extremely economical to manufacture.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: November 19, 1985
    Assignee: American Newspaper Publishers Association
    Inventor: John T. Moynihan
  • Production of polymeric thickeners and their use in printing
    Patent number: 4554018
    Abstract: A thickening agent that is particularly suitable for alkaline print pastes is a water insoluble, water swellable or water swollen polymer made by reverse phase polymerization of a blend of water soluble, copolymerizable monomers in which the monomers comprise at least one ethylenically unsaturated acid having free acid groups, at least one ethylenically unsaturated acid having salt groups selected from ammonium, amine and alkali metal and at least one ethylenically unsaturated cross-linking agent, the molar proportions of the said free acid groups to the said salt groups during the polymerization being from 80:20 to 10:90.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: November 19, 1985
    Assignee: Allied Colloids Limited
    Inventor: Adrian S. Allen
  • Process for preparing printing ink binders, and their use in printing inks
    Patent number: 4552592
    Abstract: Process for preparing printing ink binders based on reaction products of (a) natural resins, (b) other synthetic resins, (c) .alpha.,.beta.-olefinically unsaturated carboxylic acid units and (d) calcium compounds and, if appropriate, other compounds of metals of group II of the periodic system.The compounds (a) to (c) are reacted to give a product having an acid number of 75 to 150, which is then reacted with metal compounds in such a way that the acid number is reduced by at least one third. Unreacted metal compounds present in the resulting reaction product are then converted by means of acetic acid, via acetates, into salts of the resins. The resulting binders are used for preparing printing inks.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: November 12, 1985
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Albert Rudolphy, Gerhard Werner
  • Additives for hot mix asphalt
    Patent number: 4551178
    Abstract: A method for reclaiming used asphalt by mixing it with a chemically modifying system consisting of a polymerizable vinyl monomer and an alkenyl azabenzene.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: November 5, 1985
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Anthony V. Grossi, Louis T. Hahn, Alfred Marzocchi
  • Coal-aqueous mixtures
    Patent number: 4551179
    Abstract: Coal-aqueous mixture having high solids content and excellent stability are provided by an improved process involving selective mixing and other conditions.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: November 5, 1985
    Assignee: The Standard Oil Company
    Inventor: Seymour Mark
  • Diatomite-modified asphalt membranes and slurry seals
    Patent number: 4548650
    Abstract: Diatomite-modified membrane and slurry seal mixes having improved properties. An impermeable membrane suitable for protecting cement bridge decks and roadways has from 9 to 14% by weight asphalt, 0.5 to 3.0% diatomite with a preferred diatomite/asphalt ratio in the range of 0.08 to 0.30, with the balance being fine aggregate (sand). This membrane can be placed by conventional paving equipment, can withstand temporary traffic loading prior to installation of a wearing course, can be preformulated in sheets, and is a crack resistant (i.e., self-healing) under normal traffic loads. Also disclosed is a slurry seal cold mix with improved abrasion resistance, adhesion/cohesion, and tensile strength. With these improved characteristics, slurry seals can be useful as bridge deck and roadway membranes in addition to its standard overlay uses.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: October 22, 1985
    Assignee: Manville Service Corporation
    Inventor: John H. Kietzman
  • Foaming agent
    Patent number: 4548649
    Abstract: A foaming agent for use in the preparation of foam compositions for surface sizing paper or the like comprises the synergistic combination of a C.sub.21 dicarboxylic acid (DIACID 1550) and an alkylarylsulfonate soap (Na-DDBS).
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: October 22, 1985
    Assignee: Westvaco Corporation
    Inventors: Edmund M. Choy, Mark E. Baran
  • Aqueous coating composition comprising self-emulsifiable ester of epoxy and acid containing addition polymer
    Patent number: 4547535
    Abstract: Non-gelled compositions containing hydroxy ester copolymer having carboxyl groups and substantially free of oxirane groups are disclosed which are the esterification reaction product of(A) acidic addition copolymer; and(B) mixtures containing epoxy resin including both aromatic polyether containing oxirane groups and aromatic polyether devoid of oxirane groups, in which the mixture comprises at least 40% of the total resin solids and contains insufficient oxirane groups to react with all of the carboxyl groups in the copolymer. The resulting composition is neutralized with amine, is self-emulsifiable in water and is useful for coating, e.g., for cans.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: October 15, 1985
    Assignee: SCM Corporation
    Inventors: George L. Brown, Arthur T. Spencer
  • Coating compositions of tetrafluoroethylene aqueous dispersions
    Patent number: 4546144
    Abstract: It has been discovered that if a selected water-soluble aluminum, magnesium or zinc salt of a monovalent anion is added to an aqueous dispersion of a non-melt-fabricable tetrafluoroethylene polymer wherein the dispersion has a pH of 4 or less, the resulting dispersion will flow well on a woven fabric substrate, such as a woven glass fiber fabric, and will fill and cover the interstices of the weave without the necessity of having filler particles present.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: October 8, 1985
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Alan C. Knight
  • Coated, heat shrinkable expanded polystyrene
    Patent number: 4546134
    Abstract: A composition and method for color coating an expanded polystyrene "drop-out" ceiling tile, by which its heat shrinking drop-out characteristic is preserved. The composition comprises a water soluble salt of a polymer of acrylic acid as a film forming component, a plasticizing component, a pigment component and a pigment dispersing component such as clay. The ceiling drop-out and surface flame properties of the polyacrylate coated expanded polystyrene substrate compare favorably with those of uncoated expanded polystyrene used for the same purpose.
    Type: Grant
    Filed: March 25, 1983
    Date of Patent: October 8, 1985
    Assignee: Day Star Concepts
    Inventor: Sherman Lakes
  • Writing implement containing dual color ink composition
    Patent number: 4545819
    Abstract: An implement for writing on an absorbent or porous surface as provided, said implement including a writing or marking tip and said implement containing a writing medium, wherein said writing medium comprises an ink composition including:a first colorant,a second colorant anda vehicle,said first colorant being dispersed throughout said vehicle and having a particle size sufficiently large so as to substantially not permeate or be absorbed into said writing surface andsaid second colorant being dispersed or dissolved throughout said vehicle and being capable of substantially permeating or being absorbed into said writing surface and diffusing into the area on said surface proximate to said writing,whereby writing applied by said implement to said surface includes an inner portion of said first colorant bordered by substantial outer portions formed by said second colorant.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: October 8, 1985
    Assignee: Sakupa Color Products Corp.
    Inventors: Keiko Shioi, Yukito Shoji
  • Preparation of pigmentary grade pigment from crude pigment
    Patent number: 4541872
    Abstract: Finished grade pigments are prepared from crude pigment precursors by conversion to aggregated low crystallinity pigment followed by milling the aggregated low crystallinity pigment in water having a pH of from 7 to 14 and from 5 to 25% based on pigment of a separate phase comprising an organic liquid which is effective in growing and improving the crystallinity of the pigment particles. The resulting material is extracted in dilute acid, washed free of acid and dried to produce the final finished grade pigment.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: September 17, 1985
    Assignee: Ciba-Ceigy Corporation
    Inventor: Edward E. Jaffe
  • Ink jet ink formulation for reduced start-up problems
    Patent number: 4537631
    Abstract: An ink jet ink formulated to substantially reduce or eliminate start-up problems when an ink jet apparatus is initially discharged. The ink comprises at least two fluid components. The components have been matched to provide an ink that substantially maintains its initial formulation despite evaporation of the components.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: August 27, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Theodore M. Cooke, Robert A. Lin, Richard G. Whitfield, Allan G. Hock
  • Fluoran derivatives as new compounds and recording system utilizing the same as colorless chromogenic material
    Patent number: 4536220
    Abstract: A new fluoran derivative useful as a colorless chromogenic material has the following formula: ##STR1## wherein R, R.sub.1, R.sub.2, R.sub.3, X and Y have the same meaning as defined hereinbefore.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: August 20, 1985
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Mitsuru Kondo, Hiroshi Iwasaki, Haruo Omura, Nobuo Kanda