Patents by Inventor David A. Undlin

David A. Undlin 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).

  • Publication number: 20190249100
    Abstract: Methods are provided for controlling fugitive dust emissions from a variety of granular or particulate solids materials such as coal dust. A first treatment of cationic polymer or cationic copolymer is applied to the dust. The dust is then loaded onto an open bed rail car or the like. A topping treatment comprising an aqueous dilute polymer solution or polymer latex emulsion or dispersion is applied to the exposed coal layer in the rail car.
    Type: Application
    Filed: May 10, 2017
    Publication date: August 15, 2019
    Applicant: General Electric Company
    Inventors: Umit Turunc, Michael T. Raab, David A. Undlin, Bryce Anden Uytiepo
  • Publication number: 20050161234
    Abstract: The present invention relates to a method of inhibiting coal oxidation in a coal pile which includes coating all the surfaces of coal exposed to air with an oxidation inhibiting amount of a composition comprising (a) a water soluble cationic polymer and (b) a wetting agent selected from an anionic or nonionic surfactant, or mixtures thereof.
    Type: Application
    Filed: January 27, 2004
    Publication date: July 28, 2005
    Inventors: Umit Turunc, David Undlin
  • Patent number: 5091159
    Abstract: In the Bayer process for producing alumina from bauxite of the type wherein the bauxite is added to a caustic solution to produce a soluble aluminate solution and an insoluble red mud fraction which is then subjected to one or more separation steps to produce a thickener overflow which is then subjected to a Kelly Filter Press to polish the thickener overflow the improvement which comprises treating the thickener overflow and the filter aid with a filtration improving amount of dextran.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: February 25, 1992
    Assignee: Nalco Chemical Company
    Inventors: Lawrence J. Connelly, Steven J. Abbatello, David C. Davis, David A. Undlin