Patents by Inventor David C. Shubert

David C. Shubert 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).

  • Method for removing cations and anions from an engine coolant liquid
    Patent number: 5174902
    Abstract: An apparatus and method for removing particulates, hydrcarbons (such as oil), cations and anions including nitrite ions from a liquid, such as an engine coolant liquid having a freezing point depressant and situated in an internal combination engine cooling system. The apparatus has at least one filter for removing particulates and hydrocarbons; a strong acid cation exchange bed in the hydrogen form for removing cations; a strong base anion exchange bed in the hydroxide form for removing anions; and separator for separating gas containing nitrogen, such as nitric oxide and/or nitrogen dioxide, that is produced in the cation exchange bed and/or the anion exchange bed.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: December 29, 1992
    Assignee: BG Products, Inc.
    Inventors: David C. Shubert, Galen R. Myers, Robert C. Richardson