Patents by Inventor Rosalind H. Strange

Rosalind H. Strange 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).

  • Fuel oil compositions
    Patent number: 5348561
    Abstract: Sediment and color formation in distillate fuels are reduced by the addition of a quaternary ammonium compound comprising a cation in which the ratio of carbon atoms to quaternary nitrogen atoms is not more than 10:1 and an anion which is derived from an acid which is a carboxylic acid, carboxylic acid anhydride, phenol, sulphurized phenol or sulphonic acid.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: September 20, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael D. Sexton, Rosalind H. Strange
  • Fuel oil compositions containing guanidinium salts
    Patent number: 5152807
    Abstract: Sediment and color formation in diesel and heating fuel oils, especially those comprising a cracked fraction, may be reduced by incorporating in the fuel oil a guanidinium or substituted guanidinium salt.
    Type: Grant
    Filed: March 15, 1990
    Date of Patent: October 6, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael D. Sexton, Rosalind H. Strange