Patents by Inventor Andrew Doyle Abbott

Andrew Doyle Abbott 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).

  • Preparation of phosphorus-containing acids and salts
    Patent number: 4116871
    Abstract: Phosphorus-containing acids and salts are prepared by heating a mixture of(A) an acid of the formula ##STR1## where R is alkyl, with (B) an acid of the formula ##STR2## where R.sup.1 is aryl, for 3 to 10 hours at 55.degree. to 95.degree. C to form a mixture of acids (A) and (B) and an acid of the formula ##STR3## and optionally neutralizing to a salt to be used in lubricating oil.
    Type: Grant
    Filed: June 29, 1977
    Date of Patent: September 26, 1978
    Assignee: Chevron Research Company
    Inventors: Andrew Doyle Abbott, George J. Benoit