Patents Examined by Lorenzo B. Hayes
  • Patent number: 4724172
    Abstract: Corrosion and oxidation resistant coating compositions containing phosphate, chromate or molybdate and atomized aluminum powder.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: February 9, 1988
    Assignee: Sermatech International, Inc.
    Inventors: Mark F. Mosser, Bruce G. McMordie
  • Patent number: 4680139
    Abstract: Resin is mixed with graphite particles to form a blendable, processable premold coating. When the premold coating is incorporated onto the surface of a premold coated molded plastic product produced by the premold process, said coating is rendered electrostatically conductive.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: July 14, 1987
    Assignee: Ferro Corporation
    Inventors: Charles F. Williams, Atam P. Sahni
  • Patent number: 4676997
    Abstract: Sand casting is an old art. In this molding process sand is compacted around a pattern and the pattern is removed, leaving a mold cavity the shape of the pattern. Molten metal can then be poured into the cavity to form the object. To increase the life of the mold, and to make removal of the pattern easier, the pattern must be coated with a protective material. Despite many available pattern coating compounds, mineral seal oil, and a mixture of mineral seal and clay, have been the commercial choices. But they are not without their disadvantages. The properties of mineral seal oil are not entirely desirable, particularly its low flash point and toxicity. Hereby the advantages of mineral seal oil-clay pattern coating compositions are retained without its detriments.
    Type: Grant
    Filed: March 11, 1986
    Date of Patent: June 30, 1987
    Assignee: The Hill-and-Griffith Company
    Inventors: Victor S. LaFay, Stephen L. Neltner
  • Patent number: 4675215
    Abstract: A method and composition for inhibiting corrosion is disclosed. The method involves forming a coating of from about 1-10 mils thick on a surface, with a composition comprising an over-based alkaline organic sulfonate salt, a drying oil, a copper or rare earth metal drier, a zinc metal drier, an organic solvent, and petrolatum, and curing the coating. Optionally, the composition may include polyisobutylene. The method and composition are particularly useful for metal surfaces in a seawater environment.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: June 23, 1987
    Assignee: Economics Laboratory, Inc.
    Inventors: Stanley J. Ciuba, Michael J. Bartelme, III
  • Patent number: 4675051
    Abstract: A marine anti-fouling paint which is gradually dissolved in sea water comprises a binder which is a resin produced by the reaction of rosin and an aliphatic polyamine containing at least one primary or secondary amine group. The resin contains an amidoamine or imidazoline group. The anti-fouling paint comprises the binder, a marine biocide and a pigment having a solubility in sea water of not more than 10 parts per million by weight. The pigment may itself be the marine biocide of the paint.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: June 23, 1987
    Assignee: International Paint Public Limited Company
    Inventor: Kenneth F. Baxter
  • Patent number: 4673436
    Abstract: Corrosion inhibition is obtained by treating a system containing corrosion susceptible metal with a corrosion inhibiting amount, preferably 1 to 10,000 ppm of a thio substituted quaternary ammonium salt, preferably of the general structure: ##STR1## wherein R.sub.1 is preferably H or an alkyl group of 8 to 18 carbon atoms, n is 2 or 3, R.sub.2, R.sub.3 and R.sub.4 are preferably alkyl groups of 1 to 18 carbon atoms and two of R.sub.2, R.sub.3 and R.sub.4 are methyl.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: June 16, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventors: John A. Haslegrave, Daniel S. Sullivan
  • Patent number: 4673354
    Abstract: A method for priming a dental material using a liquid layer of acidic, non-hazy silanol priming solution containing substantially fully hydrolyzed organofunctional silanol, water, and volatile alcohol or ketone solvent. The compositions contain a sufficiently low amount of silanol and sufficiently high amounts of solvent and acid to have a priming strength in excess of the cohesive strength of dental porcelain after storage of the solution at room temperature for at least about 45 days.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: June 16, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Scott R. Culler
  • Patent number: 4670053
    Abstract: Impression material in the form of a powder, which, on mixing with water, provides a paste which cures to a solid consistency, the material in the form of a powder being made dust-free by additions of a coating agent, which material is characterized in that it contains paraffin as an additive.
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: June 2, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter Kooke, Peter Schwabe
  • Patent number: 4668293
    Abstract: A corrosion inhibitor system and method for inhibiting corrosion in aqueous compositions within aerosol containers. The composition comprises at least one Group I metal salt of benzoic acid and at least one phytate selected from the group consisting of Group I and Group II metal salts of phytic acid and mixtures thereof, when the ratio of benzoate to phytate is about 10:1 to 1:10 and preferably 2.5:1, the corrosion inhibitor system being present in an amount of about 0.1 to 4% by weight of the composition. The method comprises adding an effective amount of at least one Group I metal salt of benzoic acid and at least one phytate selected from the group consisting of Group I and Group II metal salts of phytic acid and mixtures thereof to reduce corrosion in steel aerosol containers containing corrosive aqueous compositions. The ratios of benzoate to phytate are effective to inhibit corrosion in the aqueous system.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: May 26, 1987
    Assignee: S. C. Johnson & Son, Inc.
    Inventor: W. Stephen Tait
  • Patent number: 4668294
    Abstract: Rodent repellent paints and solid are disclosed which are comprised of thujone oil in pure form or in the form of cedar leaf oil in a suitable liquid or solid carrier such as lacquer, kerosene, alcohol, sodium silicate, paraffin or sawdust.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: May 26, 1987
    Inventor: Norman T. Harding, Jr.
  • Patent number: 4666518
    Abstract: A recipe is provided for an aqueous inside and/or outside paint for green tires which are to be vulcanized in a mold in cooperation with a hot, pressurized inner bladder. The aqueous paint contains no silicone release agent, hydrocarbon solvent or rubber latex, but only an air bleeding pigment such as carbon black for the outside paint or mica for the inside paint, and surfactant which are blended into a hot wax melt to form a stable dispersion. The melt contains a major amount of a lower melting wax such as paraffin wax, and a minor amount of a higher melting wax such as carnauba wax based on the total weight of wax. The carnauba wax may be dispensed within the outside tire paint for passenger car tires. The essential ingredients for the inside tire paint are the same as those used for the outside tire paint, except that the ratios in which they are present are different to accommodate the disparate requirements for flow of the tire's rubber surfaces during the vulcanizing cycle.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: May 19, 1987
    Assignee: The Uniroyal Goodrich Tire Company
    Inventors: Victor L. Hallenbeck, Chong K. Rhee
  • Patent number: 4666747
    Abstract: A wettable powder which can be made up into a sprayable aqueous dispersion for use in pest control to allow an active substance to be applied to a surface to be retained thereon for an extended duration, particularly without undergoing degradation of its properties, comprises the active agent which is an active agent not readily soluble in water and a water-soluble naturally occurring organic product such as a phospholipid having the capacity to serve as a non-polar domain which has high affinity for hydrophobic molecules to keep them in a stable aqueous dispersion.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: May 19, 1987
    Assignee: Acacia Chemicals Ltd.
    Inventor: Peter J. Quinn
  • Patent number: 4664948
    Abstract: Binder, filler, and refractory compositions and methods of using and making these compositions are disclosed. The binder composition comprises colloidal silica, a liquid material containing Si-OH groups, a solvent which is capable of solubilizing the liquid material and the colloidal silica, and at least one aprotic, non-ionic, non-metallic, organic compound which contains at least one element selected from P, S, B and N and which stabilizes the binder composition against self-gelling. The liquid material and the colloidal silica are present in a ratio by weight of from about 10:1 to about 1:10 respectively. The liquid material has at least about 20% by weight SiO.sub.2. The colloidal silica contains at least about 15% by weight SiO.sub.2. The solvent and the organic compound are present in amounts so as to solubilize the liquid material and the colloidal silica, to provide a binder composition which is stable against self-gellation, and to provide a binder composition which gels to a single phase.
    Type: Grant
    Filed: May 9, 1986
    Date of Patent: May 12, 1987
    Assignee: Harborchem, Inc.
    Inventors: John R. Moore, Stephen Maybaum
  • Patent number: 4662944
    Abstract: Non-metallic articles are sensitized for deposition of adherent metal from electroless metal solutions in contact therewith by treatment with a first medium including cuprous ions and stannous ions thereby absorbing on the surface in situ at least said cuprous ions; thereafter treating the surface with a second medium to decrease the solubility of the cuprous ions and/or simultaneously removing the excess; and simultaneously or subsequently, if necessary, treating the surface with one or more agents to transfer said cuprous ions into a catalytically-active state.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: May 5, 1987
    Assignee: Kollmorgen Technologies Corporation
    Inventors: Francis J. Nuzzi, Edward J. Leech, Richard W. Charm, Joseph Polichette
  • Patent number: 4663202
    Abstract: A method of treating a surface to render the surface resistant to undesired adsorption from an aqueous environment, involving treating the surface with a solution containing a polymer mixture comprising (1) a polymer containing (a) reactive groups (A) capable of bonding with the surface to be treated and (b) hydrophobic groups (B); and (2) a polymer comprising (c) at least one hydrophilic polymeric chain (c) and (d) at least one hydrophobic group (D) in the presence of water. Compositions containing the polymer mixture may be used as mouthwashes to prevent or reduce tooth decay and prevent plaque formation. They may also be applied to various surfaces where prevention and/or reduction of colonization by microorganisms on the surfaces is desired.
    Type: Grant
    Filed: January 14, 1985
    Date of Patent: May 5, 1987
    Assignee: National Research Development Corporation
    Inventor: Brian E. Causton
  • Patent number: 4661065
    Abstract: The invention provides a denture liner composition for a composite denture based on a phosphonitrilic fluoroelastomer [poly(fluoroalkoxy)phosphazene] curable at atmospheric pressure at temperatures of about 100.degree. C. or less, conveniently by immersing the packed denture flask in a water bath at the appropriate temperature. The composition includes trimethacrylate and dimethacrylate cross-linking agents for increasing liner hardness and decreasing water sorption characteristics of the cured liner. The composition preferably further includes filler materials for increasing the hardness of the liner product. The composite denture is preferably prepared in a one-step process wherein the liner composition material of a single firmness is cured in situ with the denture base material.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: April 28, 1987
    Assignee: Gulf South Research Institute
    Inventors: Lawrence Gettleman, Paul H. Gebert
  • Patent number: 4661400
    Abstract: There is disclosed a net antifouling composition for use on nettings and comprised of from 2 to 10 percent, preferably 3-6 percent by weight of a tri-n-butyl tin ester selected from the group consisting of tri-n-butyl tin linoleate, bis(tri-n-butyl) tin succinate, tri-n-butyl tin benzoate, bis tri-n-butyl tin salicylate and mixtures thereof in an organic solvent system or a water base system, preferably a water base system, for controlling algae and invertebrate growth.
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: April 28, 1987
    Assignee: EMA Company
    Inventor: Richard J. Guglielmo, Sr.
  • Patent number: 4659381
    Abstract: A flame retarded asphalt composition comprising a blend of:(a) modified bitumen;(b) 1-20 wt % of at least one halogenated flame retardant; and(c) 1-5 wt % of at least one inorganic phosphorus containing compound selected from the group consisting of ammonium phosphate compounds and red phosphorus.The inventive flame retarded composition is classified as a Class A material according to ASTM E-108 and therefore has superior fire resistance properites.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: April 21, 1987
    Assignee: Manville Corporation
    Inventor: Robert B. Walters
  • Patent number: 4657592
    Abstract: A root canal sealer containing medium chain fatty acid triglyceride instead of eugenol, the sealer further contains calcium hydroxide or calcium oxide and bees wax, the blending ratio of the medium chain fatty acid triglyceride and bees wax is 5:95-30:70 by weight, the sealer being applied to an apical foramen together with gutta percha cone using ultra sonic technology, the sealer enables to employ the calcium ingredient in a desired ratio and the solidifying of the sealer may be accelerated.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: April 14, 1987
    Assignees: Masayoshi Takubo, Michihiro Takubo
    Inventor: Masayoshi Takubo
  • Patent number: 4657589
    Abstract: A solder composition containing a small amount of gold added to the solder metal, to avoid cracking of solder joints in electronic circuits, particularly densely packed microelectronic circuits, during thermal cycling. The solder composition comprises 85 to 90% of total solder metal and 10 to 15% of a vehicle for the solder metal, the solder metal containing about 0.2 to about 3% of particulate gold, by weight of the solder metal.
    Type: Grant
    Filed: February 3, 1986
    Date of Patent: April 14, 1987
    Assignee: McDonnell Douglas Corporation
    Inventor: Felix Barajas