Patents Represented by Attorney Robert H. Dewey

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  • Process for preparing olivine sand cores and molds
    Patent number: 4396431
    Abstract: An inorganic cement binder for a foundry aggregate comprising, in combination, potassium olivine phosphate and as a hardener therefor, water, aqueous sodium silicate, or aqueous phosphoric acid.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: August 2, 1983
    Assignee: International Minerals & Chemical Corporation
    Inventors: Charles E. Seeney, John F. Kraemer, Janis Ingebrigtsen
  • Oxidatively coupled cold-set binders
    Patent number: 4393152
    Abstract: A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor, a catalyst and an amine, the binder being a substituted phenol.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: July 12, 1983
    Assignee: International Minerals & Chemicals Corp.
    Inventors: Charles E. Seeney, John F. Kraemer, Nancy C. Varnum
  • Metal silico-phosphate binders and foundry shapes produced therefrom
    Patent number: 4390370
    Abstract: A binder and a hardener therefor for a foundry aggregate. The binder is a resin obtained by reacting phosphoric acid with a mineral silicate. The hardener is a linear alkali metal polyphosphate, ammonium polyphosphate, a source of polyvalent cations, potassium olivine phosphate and other metal silico-phosphates or aluminum dihydrogen phosphate or mixtures thereof. A process for manufacturing molds and cores from a mixture of said binder and hardener and foundry aggregate.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: June 28, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventor: Charles E. Seeney
  • Oxidatively coupled cold-set binders
    Patent number: 4389498
    Abstract: A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor, a catalyst and an amine, the binder being a substituted phenol.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: June 21, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventors: Charles E. Seeney, John F. Kraemer, Nancy C. Varnum
  • Granulation of potash salts
    Patent number: 4385920
    Abstract: A process for the granulation of potash salts to produce granules in high yield by the steps of mixing the potash salt with an inorganic phosphate binder and water, granulating the mixture and drying it.
    Type: Grant
    Filed: January 22, 1979
    Date of Patent: May 31, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventors: William B. Dancy, Kenneth L. Nichols
  • Pressure gage attachment fitting for tubular conduit system
    Patent number: 4384736
    Abstract: A ring member having an opening extending radially therethrough to provide access between the inside and outside of said ring member. The ring member is disposed between the ends of two adjacent pipe sections, and is in sealing engagement therewith.The opening in the ring member provides mounting means for a pressure gage, or an access fitting to the pipeline to add dye materials or other reagents. The adjacent pipe sections may be rotated to equalize wear without rotating the ring member so that the pressure gage may be maintained on the top of the pipeline for ready access.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: May 24, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventor: Ronald F. Hartung
  • Metal silico-phosphate binders and foundry shapes produced therefrom
    Patent number: 4383861
    Abstract: A hydrogel binder for a foundry aggregate comprising, in combination, a metal silico-phosphate and as a hardener therefor a mixture of aluminum dihydrogen phosphate, water and phosphoric acid and a process for manufacturing molds and cores from same.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: May 17, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventors: Charles E. Seeney, John F. Kraemer, Janis Ingebrigtsen
  • Olivine bedding material for soaking pits
    Patent number: 4379691
    Abstract: A method of operating "wet bottom" practice soaking pits to prolong useful period between bed replacement. Olivine is used to replace coke breeze in the bottom of the soaking pit to protect its refractory lining.Operating periods from 40-60 days are possible when olivine is used in the soaking pit. The olivine has excellent temperature stability, also, so it is well suited for this application, in which temperatures range from about 2400.degree.-2650.degree. F.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: April 12, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventors: Joseph E. Doninger, George D. Hanson
  • Method for dispersing comminuted solids
    Patent number: 4345945
    Abstract: A method for dispersing a comminuted solid in an aqueous medium using a mono-, di- or tri- salt of an alkanolamine and an acid of phosphorous, or a mixture thereof, as the dispersing agent.
    Type: Grant
    Filed: December 9, 1980
    Date of Patent: August 24, 1982
    Assignee: International Minerals & Chemical Corp.
    Inventor: Glenn N. Robinson
  • Purification of phosphoric acid
    Patent number: 4341638
    Abstract: Phosphoric acid is purified by a process which comprises treating the crude acid solution with a body feed agent, powdered carbon and a flocculating agent to cause a major portion of the soluble and insoluble impurities to be removed in a single operation. In the preferred process, hot wet process phosphoric acid from the plant filter is first cooled to a temperature of from about 100.degree. F. to about 130.degree. F. and then treated in the above-described manner.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: July 27, 1982
    Assignee: International Minerals & Chemical Corp.
    Inventors: William W. Berry, Hanceford L. Allen
  • TL-78 Explosive composition
    Patent number: 4334939
    Abstract: An explosive composition comprising ammonium nitrate, a nitroalkane, a sensitizer, and an oxidizable fuel.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: June 15, 1982
    Assignee: International Minerals & Chemical Corp.
    Inventor: Ted E. Bushman
  • Process for the nitration of methane
    Patent number: 4329523
    Abstract: An improved process for the vapor phase nitration of methane comprising delivering preheated (1000.degree.-1250.degree. F.) methane at a flow rate of not less than 20,000 SCFH into a reaction chamber of 3.334 inches in diameter maintained at about 950.degree. F., delivering nitric acid into the reaction chamber through a plurality of orifices perpendicularly mounted with respect to the methane flow, whereat the nitric acid vaporizes, mixes with the methane and reacts therewith, and exiting the reaction mixture after a reaction time of 30 to 250 milliseconds and recovering nitromethane from the reaction mixture.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: May 11, 1982
    Assignee: International Minerals & Chemical Corp.
    Inventors: Richard L. James, Richard S. Egly
  • Method of preparing wrinkle-resistant fabric
    Patent number: 4323624
    Abstract: A composition comprising a mixture of a curable urea-aldehyde resin or other crosslinking agent and a nitroalkanol or nitroalkane and having particular utility for treating textiles and non-woven cellulose products to provide permanent press and wrinkle-resistant characteristics.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: April 6, 1982
    Assignee: International Minerals & Chemical Corp.
    Inventors: Jerry H. Hunsucker, Milton E. Woods
  • Foundry no-bake combination resin binder
    Patent number: 4317896
    Abstract: A binder for foundry aggregate capable of being catalytically cured with a polyisocyanate and an alkaline catalyst comprising in combination, as a major portion, a butylated phenol-formaldehyde resin, a lesser amount of a resole resin and a still lesser amount of a novolac resin.
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: March 2, 1982
    Assignee: International Minerals & Chemical Corp.
    Inventor: Melville J. Holik
  • N-Formylation of 2-amino-2-methyl-1-propanol with chloral hydrate
    Patent number: 4314080
    Abstract: A method for preparing 2-methyl-2-N-formylamino-1-propanol by the step of reacting 2-amino-2-methyl-1-propanol with chloral in about an equimolar ratio at ambient to elevated temperatures.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: February 2, 1982
    Assignee: International Minerals & Chemical Corp.
    Inventor: Mohammed T. Shipchandler
  • Zwitterion polymer for water borne coatings
    Patent number: 4308188
    Abstract: A water-dilutable polymer for use in water-borne coatings comprising the half ester zwitterion reaction product of a polymer containing cyclic acid anhydride groups with an alkanolamine of the formula ##STR1## where R is hydrogen or hydroxy, R.sup.1 is hydrogen, hydroxy or methyl and can be the same or different, and R.sup.2 is hydrogen or an aliphatic hydrocarbon group of from 1 to 3 carbon atoms.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: December 29, 1981
    Assignee: International Minerals & Chemical Corp.
    Inventors: Zeno W. Wicks, Milton E. Woods, Chiew-Wah Koay
  • Antimicrobial agents
    Patent number: 4308283
    Abstract: Certain phenylthioalkylamines and amides thereof are antifungal or antibacterial agents, or both, and provide a method of controlling the growth of these microorganisms.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: December 29, 1981
    Assignee: International Minerals & Chemical Corp.
    Inventor: Herbert L. Wehrmeister
  • Nitrohydroxyalkyl-substituted quinoxaxiline dioxides and alkanoic acid esters thereof
    Patent number: 4303657
    Abstract: Nitrohydroxyalkylquinoxaline-1,4-dioxides represented by the formula ##STR1## where R is hydrogen, lower alkyl of 1-3 carbon atoms, hydroxymethyl or acetoxymethyl and R' is hydrogen or lower alkyl of 1-2 carbon atoms or R and R' taken together can be alkylene of 5 carbon atoms and alkanoic acid esters thereof. The compounds are useful for promoting growth rate of animals and improving their feed efficiency.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: December 1, 1981
    Assignee: International Minerals & Chemical Corp.
    Inventors: Vernon V. Young, Robert D. Williams, Richard E. Ivy
  • Coating composition of a polyamide and 2-nitro-2-hydroxymethyl-1,3-propanediol
    Patent number: 4298638
    Abstract: A liquid coating composition comprising a polyamide and 2-nitro-2-hydroxymethyl-1,3-propanediol.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: November 3, 1981
    Assignee: International Minerals & Chemical Corp.
    Inventor: Jerry H. Hunsucker
  • Method for polyurethane foam using a tri-tertiary amine catalyst
    Patent number: 4297443
    Abstract: A method of catalyzing the curing of polyurethane foams formed by reacting a polyol with a diisocyanate in the presence of a blowing agent and a catalyst comprising using as the catalyst a compound of the formula ##STR1## where n is 0 or 1, R is methyl or ethyl and R' is hydrogen, methyl of dimethylamino.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: October 27, 1981
    Assignee: International Minerals & chemical Corporation
    Inventors: Paul E. Eckler, William A. Summers, Ollie W. Chandler