Patents by Inventor Howard C. Welborn, deceased

Howard C. Welborn, deceased 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).

  • Ethylene .alpha.-olefin/diene interpolymer-substituted carboxylic acid dispersant additives
    Patent number: 5759967
    Abstract: The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene/alpha-olefin/diene interpolymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted interpolymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such s amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful lubricating oil additives, e.g., as dispersants.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: June 2, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventors: Won R. Song, Albert Rossi, Howard W. Turner, Howard C. Welborn, deceased, Robert D. Lundberg, Antonio Gutierrez, Robert A. Kleist
  • Ethylene alpha-olefin/diene interpolymer-substituted carboxylic acid dispersant additives
    Patent number: 5681799
    Abstract: The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene/alpha-olefin/diene interpolymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted interpolymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful lubricating oil additives, e.g., as dispersants.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: October 28, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Won R. Song, Albert Rossi, Howard W. Turner, Howard C. Welborn, deceased, Robert D. Lundberg, Antonio Gutierrez, Robert A. Kleist
  • Ethylene alpha-olefin polymer substituted mono- and dicarboxylic acid dispersant additives
    Patent number: 5435926
    Abstract: The present invention is directed to an oil-soluble fuel and lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful fuel and lubricating oil additives, e.g., as dispersants.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: July 25, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Antonio Gutierrez, Robert A. Kleist, Won R. Song, Albert Rossi, Howard W. Turner, Howard C. Welborn, deceased, Robert D. Lundberg