Patents by Inventor Roger T. Bentley

Roger T. Bentley 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).

  • Low foaming surfactant
    Patent number: 4925988
    Abstract: A novel low foaming non-ionic surfactant having good wetting properties has a molecular weight of about 1700 to about 2300 and the formula:R--O--X--Y--Hwherein R is a primary alkyl group having about 6 to about 10 carbon atoms, X is a random mixture of EO and PO groups containing about 10 to about 12 EO groups and wherein the mole ratio of EO:PO groups is about 4:1, and Y is a PO block containing about 15 to about 25 PO groups, preferably about 21 to about 25.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: May 15, 1990
    Assignee: Hart Chemical Limited
    Inventors: Brigitte H. Licht, Roger T. Bentley, Frederick S. Schell