Patents by Inventor Gerbrand Deetman

Gerbrand Deetman 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).

  • Stabilized phosphate ester-based functional fluid compositions
    Patent number: 5464551
    Abstract: A fluid composition suitable for use as an aircraft hydraulic fluid is disclosed. The fluid composition comprises a fire resistant phosphate ester base stock comprising between about 10% and about 100% by weight of a trialkyl phosphate, between about 0% and about 70% by weight of a dialkyl aryl phosphate, and from about 0% to about 25% by weight of an alkyl diaryl phosphate, with the proviso that the sum of the proportionate amount of each base stock component must equal 100%. The alkyl substituents of the trialkyl phosphate, the dialkyl aryl phosphate, and the alkyl diaryl phosphate contain between 3 and 8 carbon atoms, preferably between 4 and 8 carbon atoms, more preferably between 4 and 5 carbon atoms, and are bonded to the phosphate moiety via a primary carbon. It is still further preferred that the alkyl substituents of the trialkyl phosphate, the dialkyl aryl phosphate, and the alkyl diaryl phosphate are isoalkyl groups.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: November 7, 1995
    Assignee: Monsanto Company
    Inventor: Gerbrand Deetman
  • Color stabilization of monoalkyl phenols
    Patent number: 4386224
    Abstract: A method for stabilizing color, inhibiting color development, and reducing color of monoalkyl phenols by incorporation of N,N-diethylhydroxylamine, preferably from about 5 parts per million to about 50 parts per million. Also a color stabilized monoalkyl phenol composition comprising a monoalkyl phenol and a color stabilizing amount of N,N-diethylhydroxylamine.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: May 31, 1983
    Assignee: Monsanto Company
    Inventor: Gerbrand Deetman
  • Stabilized phosphate ester-based functional fluid compositions
    Patent number: RE37101
    Abstract: A fluid composition suitable for use as an aircraft hydraulic fluid is disclosed. The fluid composition comprises a fire resistant phosphate ester base stock comprising between about 10% and about 100% by weight of a trialkyl phosphate, between about 0% and about 70% by weight of a dialkyl aryl phosphate, and from about 0% to about 25% by weight of an alkyl diaryl phosphate, with the proviso that the sum of the proportionate amount of each base stock component must equal 100%. The alkyl substituents of the trialkyl phosphate, the dialkyl aryl phosphate, and the alkyl diaryl phosphate contain between 3 and 8 carbon atoms, preferably between 4 and 8 carbon atoms, more preferably between 4 and 5 carbon atoms, and are bonded to the phosphate moiety via a primary carbon. It is still further preferred that the alkyl substituents of the trialkyl phosphate, the dialkyl aryl phosphate, and the alkyl diaryl phosphate are isoalkyl groups.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: March 20, 2001
    Assignee: Solutia Inc.
    Inventor: Gerbrand Deetman