Patents by Inventor David I. Foster

David I. Foster 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: 4992213
    Abstract: The invention relates to a composition which is designed to be used as a cleaning agent and oil dispersant. The composition has a number of active ingredients mixed with water. The solution provides for the use of such active ingredients as sodium lauryl sulfate, cocamidopropyl betaine, ethoxylated nonylphenol, lauric acid diethanolamide, diethanolamine and propylene glycol. Preferred compositions contain the following ingredients mixed in an aqueous base: from 0.02% to 2.25% by total weight of sodium lauryl sulfate, from 0.02% to 1.95% by total weight of cocamidopropyl betaine, from 0.002% to 0.25% by total weight of ethoxylated nonylphenol, from 0.04% to 4.25% of lauric acid diethanolamide, from 0.02% to 1.85% by total weight of diethanolamine and from 0.02% to 1.85% by total weight of propylene glycol.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: February 12, 1991
    Inventors: G. Troy Mallett, Edward E. Friloux, David I. Foster
  • Patent number: 4442077
    Abstract: Method for removing a hydride of an element selected from the group consisting of phosphorous, arsenic, antimony, bismuth, or mixtures thereof, from a hydrocarbon stream, a gas stream, or a mixture of the two streams by initially reducing the free water concentration of the stream or streams or raising the temperatures of the same and subsequently contacting the essentially moisture free effluent with soda lime.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: April 10, 1984
    Assignee: Chemical Engineering Technology, Inc.
    Inventors: David I. Foster, Paul T. Scott, Mark W. Pierick, Clarence L. Shaddock, Jr.