Patents by Inventor Wilfred C. Meyer

Wilfred C. Meyer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5418271
    Abstract: Coating formulations which behave as elastic solids having reversible stress-induced fluidity are prepared by creating a fluid having distributed therein effective amounts of ionic charge sites and countercharge sites. For instance, elastic solids having reversible stress-induced fluidity are prepared by combining liquid formulations with a dispersion of a small, but effective, amount of at least one crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.multidot.a) (A.sup.n).sub.a .multidot.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical of valence n and a is the amount of A, where n is 1 or more, (m+2d+3+n.multidot.a) is equal to or greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration, if any.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: May 23, 1995
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, Peter A. Doty, Christopher P. Christenson, Susan K. Falcone, Andrea H. Hazlitt, Thomas M. Knobel, Wilfred C. Meyer, Arthur E. Read, Jr., Edgar F. Hoy, Avis L. McCrary, Ha Q. Pham, Stanley F. Simpson, Steve A. Sims, Betty J. Smith
  • Patent number: 5039341
    Abstract: A cellulose ether blend useful as an adhesive in finishing compounds, comprising a high viscosity hydroxypropyl methylcellulose having a viscosity from about 4,000 to about 120,000 cps and a low viscosity hydroxypropyl methylcellulose having a viscosity from about 5 to about 3,000 cps, wherein the hydroxypropyl methylcellulose blend is at least from about 10:1 to about 1:2 high viscosity hydroxypropyl methylcellulose to low viscosity hydroxypropyl methylcellulose. Both the high and low viscosity cellulose ethers have a methoxyl substitution of about 25 to about 32 weight percent and a hydroxypropyl substitution of about 3 to about about 13 weight percent. The cellulosic blend can be used in tape joint compounds, tile adhesives, grouts, spray textures and stucco compositions.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: August 13, 1991
    Assignee: The Dow Chemical Company
    Inventor: Wilfred C. Meyer
  • Patent number: 4846889
    Abstract: This invention is a polymer blend useful in thin-bed mortar compositions comprising a water-soluble cellulose ether and a water-insoluble, but water-dispersible, polymer. The water insoluble, but water-dispersible polymer can include an unneutralized polyacrylic acid that is lightly crosslinked or methylcellulose with a viscosity from about 50 cps to about 150,000 cps, provided the polymeric blend containing methylcellulose is employed in a medium that has a pH of about 12 or greater, although a pH of less than 12 is workable, but is dependent upon the methoxyl content of the methylcellulose. The polymeric blend extends the working time of the composition in which it is employed and because the blend has sag binding characteristics, it also functions as a sag resistance aid.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: July 11, 1989
    Assignee: The Dow Chemical Company
    Inventor: Wilfred C. Meyer
  • Patent number: 4746367
    Abstract: An improved superplasticizer comprising the combination of a sulfonated copolymer of styrene and alpha-methylstyrene together with a minor amount of a salt of gluconic acid.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: May 24, 1988
    Assignee: The Dow Chemical Company
    Inventor: Wilfred C. Meyer
  • Patent number: 4523991
    Abstract: This invention is a froth flotation process for beneficiating finely sized mineral matter from a finely sized mineral ore pulp comprising floating the finely sized mineral ore pulp in a frothing aqueous medium comprising a collector and a carrier particle in an effective amount for beneficiating the finely sized mineral matter by flotation, wherein the carrier particles are adapted for selectively floating the finely sized mineral matter. The carrier particles of this invention should have a particle size and a density which are suitable for selectively beneficiating the finely sized mineral ore particles by froth flotation and have a surface treated with a condensation product, or acid derivative of a condensation product, of an alkanolamine with a fatty acid, a fatty acid ester, a dibasic fatty acid or a tribasic fatty acid, in a sufficient amount to render the carrier particle sufficiently hydrophobic to float in the frothing aqueous medium.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: June 18, 1985
    Assignee: The Dow Chemical Company
    Inventors: Wilfred C. Meyer, James J. Jakubowski
  • Patent number: 4474619
    Abstract: The froth flotation of coal in the presence of a condensate of an alkanolamine with at least about 0.8 equivalent of a fatty acid improves the separation of carbonaceous solids possessing relatively high heat value from ash and other inert mineral matter. Flotation in the presence of this condensate is particularly effective to enhance the recovery of oxidized bituminous coal.
    Type: Grant
    Filed: October 14, 1981
    Date of Patent: October 2, 1984
    Assignee: The Dow Chemical Company
    Inventors: Wilfred C. Meyer, Robert D. Hansen, Robert E. Hefner, Jr.
  • Patent number: 4308133
    Abstract: Aromatic polycyclic, hydrocarbon compounds bearing at least one nuclear sulfonic acid or sulfonate moiety are useful as froth promoters to improve the recovery of clean coal in the froth flotation of finely-divided coal. Disulfonated diphenyl ether compounds bearing at least one nuclear alkyl group of from 10 to 22 carbon atoms are particularly efficacious.
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: December 29, 1981
    Assignee: The Dow Chemical Company
    Inventor: Wilfred C. Meyer
  • Patent number: 4130400
    Abstract: Combustible fuel slurries are prepared by admixing solid particulate carbonaceous material, liquid hydrocarbon fuel such as gasoline, fuel oil, and the like, and a particulate cross-linked organic liquid-swellable, organic liquid-insoluble polymer composed of at least 50 mole percent of at least one alkylstyrene. Such slurries are mobile and readily processable in conventional fuel oil transporting, storage, and burning equipment.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: December 19, 1978
    Assignee: The Dow Chemical Company
    Inventor: Wilfred C. Meyer
  • Patent number: 4130401
    Abstract: Combustible fuel slurries are prepared by admixing solid particulate carbonaceous material, liquid hydrocarbon fuel such as gasoline, fuel oil, and the like, a polar liquid flocculating third phase, and a wetting agent having an HLB value in the range of about 6.5 to about 10 and which is soluble in the third phase. Such slurries are mobile and readily processible in conventional fuel oil transporting, storage, and burning equipment.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: December 19, 1978
    Assignee: The Dow Chemical Company
    Inventors: Wilfred C. Meyer, Richard R. Klimpel
  • Patent number: H1053
    Abstract: A method of making a new food product which comprises carboxymethylcellulose, a gelling binder, food particles and typically other batter-like ingredients. The method comprises mixing carboxymethylcellulose, a gelling binder and the batter-like ingredients to form a food matrix, which is admixed with food particles and water to form a food mash. This food mash is extruded into a desirous shape and is contacted with an aluminum solution. Further processing the food product can be done by battering, or breading and the like. The food product does not have a gel-like coating encasing it, so it has very appealing textural characteristics. Additional advantages are that carboxymethylcellulose is readily available, is not temperature sensitive and is not expensive.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: May 5, 1992
    Assignee: The Dow Chemical Company
    Inventors: Donald G. Coffey, Donald A. Rebstock, Wilfred C. Meyer