Patents by Inventor Philip Howard Steiger

Philip Howard Steiger 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).

  • Amine and quaternary ammonium compounds made from ketones and aldehydes, and compositions containing them
    Patent number: 6235914
    Abstract: A process for making a tertiary amine ester of the following formula (I): the process comprising: (a) reacting a ketone or an aldehyde having the formula  with a glycol to form a ketal or an acetal; (b) reacting the ketal or the acetal with acrylonitrile to form an ether nitrile; (c) reducing the ether nitrile to a tertiary amine ketal or a tertiary amine acetal; (d) hydrolyzing the tertiary amine ketal or the tertiary amine acetal to a tertiary amine diol; and (e) esterifying the tertiary amine diol to the tertiary amine ester of formula (I), wherein R1 and R2 are each independently a hydrogen atom or a linear, branched, or cyclic alkyl, alkylene, alkaryl, or aryl-containing group containing 1 to 18 carbon atoms; and each R3 are each independently of one another fatty acid radicals having 6-22 carbon atoms.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: May 22, 2001
    Assignee: Goldschmidt Chemical Company
    Inventors: Philip Howard Steiger, Christopher Joseph Toney