Patents by Inventor David Tennent

David Tennent 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: 8820247
    Abstract: A method and apparatus for enabling rebuilding of locomotives by replacing the existing two-stroke diesel engine with a four-stroke diesel engine, while retaining the generator and its associated electronics.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: September 2, 2014
    Assignee: Knoxville Locomotive Works, Inc.
    Inventors: Pete Claussen, Scott Gatewood, Robert Anthony Di Domizio, Jr., David Tennent, Tom German
  • Publication number: 20070196910
    Abstract: Hydrophobic polymer surfaces whose level of protein binding is less than about 50-80 ng/cm2 are achieved by: (1) applying a coating solution composed of a solvent and a non-ionic surfactant having a HLB number of less than 5 to the surface; and (2) drying the surface to remove the solvent and thereby bring the surfactant into direct contact with the hydrophobic polymer. The combination of a low HLB number and the drying step have been found to produce low binding surfaces which can withstand multiple washes with water and/or protein-containing solutions Alternatively, the low binding surfaces can be produced by applying the non-ionic surfactant to the mold surfaces which contact molten polymer and form the polymer into a desired shape, e.g., into a multi-well plate, a pipette tip, or the like. Further, the low binding surfaces may be produced by incorporating non-soluble, non-ionic surfactants having an HLB number of less than or equal to 10 into a polymer blend prior to molding the article.
    Type: Application
    Filed: February 16, 2007
    Publication date: August 23, 2007
    Inventors: Dana Bookbinder, Edward Fewkes, James Griffin, Frances Smith, David Tennent
  • Publication number: 20070006561
    Abstract: A ceramic forming batch mixture including inorganic batch materials, such as sources of alumina, titania, and silica, a pore former combination including first and second pore formers with different compositions; an organic binder; and a solvent. Also disclosed is a method for producing a ceramic article involving mixing the inorganic batch materials with the pore former combination having first and second pore formers of different composition, adding an organic binder and a solvent, forming a green body; and firing the green body. A green body having a combination of first and second pore formers with different compositions is disclosed, as are several methods for firing to produce ceramic articles such as aluminum titanate.
    Type: Application
    Filed: May 31, 2006
    Publication date: January 11, 2007
    Inventors: Michael Brady, Thomas Deneka, Steven Ogunwumi, Paul Shustack, David Tennent, Patrick Tepesch, Jianguo Wang, Christopher Warren