Patents by Inventor Danny D. Richey

Danny D. Richey 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).

  • Rapidly hydrating welan gum
    Patent number: 5175277
    Abstract: A rapidly hydrating welan gum useful for preparing cementitious products. The gum can be dry blended with cement or other dry component and then added to a preformed cement/water pre-mix, thereby alleviating the need for hydrating the gum prior to addition to a cement/water mixture.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: December 29, 1992
    Assignee: Merck & Co., Inc.
    Inventors: Walter G. Rakitsky, Danny D. Richey
  • Polysaccharide and bacterial fermentation process for its preparation
    Patent number: 4286059
    Abstract: A process for producing a heteropolysaccharide by a bacterial fermentation procedure in which a species of bacteria or a mutant thereof is incubated in a fermentation medium which contains a carbon source, preferably a hydrolyxed starch, a source of magnesium ions, a source of phosphorous, a source of nitrogen and water with the incubation taking place at a temperature of about 28.degree. to about 35.degree. C.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: August 25, 1981
    Assignee: Merck & Co., Inc.
    Inventors: Kenneth Suk Kang, George T. Veeder, III, Danny D. Richey
  • Aqueous polysaccharide composition
    Patent number: 4186025
    Abstract: A process for producing a heteropolysaccharide by a bacterial fermentation procedure in which a species of bacteria or a mutant thereof is incubated in a fermentation medium which contains a carbon source, preferably a hydrolyxed starch, a source of magnesium ions, a source of phosphorous, a source of nitrogen and water with the incubation taking place at a temperature of about 28.degree. to about 35.degree. C.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: January 29, 1980
    Assignee: Merck & Co., Inc.
    Inventors: Kenneth S. Kang, George T. Veeder, III, Danny D. Richey
  • Polysaccharide and bacterial fermentation process for its preparation
    Patent number: 3933788
    Abstract: A process for producing a heteropolysaccharide by a bacterial fermentation procedure in which a new species of bacteria is incubated in a fermentation medium which contains a carbon source, preferably a hydrolyzed starch, a source of magnesium ions, a source of phosphorous, a source of nitrogen and water with the incubation taking place at a temperature of about 28.degree. to about 35.degree.C. The heteropolysaccharide produced by the above fermentation process. A thickened aqueous media containing an effective quantity of the heteropolysaccharide to thicken the media.
    Type: Grant
    Filed: June 26, 1973
    Date of Patent: January 20, 1976
    Assignee: Kelco Company
    Inventors: Kenneth Suk Kang, George T. Veeder, III, Danny D. Richey