Patents by Inventor Nicholas Benfarmeo

Nicholas Benfarmeo 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).

  • Dispersant - anti-oxidant additive and lubricating oil composition containing same
    Patent number: 5182041
    Abstract: An additive composition comprising a graft and amine-derivatized polymer having an average molecular weight ranging from about 300 to 3500 which has been reacted with at least one olefinic carboxylic acid acylating agent to form one or more acylating reaction intermediates characterized by having a carboxylic acid acylating function within their structure and reacting said reaction intermediate with an amino-aromatic polyamine compound from the group consisting of an N-arylphenylenediamine, an aminothiazole, an aminocarbazole, an amino-indazolinone, an aminomercaptotriazole and an aminoperimidine to form said graft and amine-derivatized copolymer, and a lubricating oil composition containing same are provided.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: January 26, 1993
    Assignee: Texaco Inc.
    Inventors: Nicholas Benfarmeo, Theodore E. Nalesnik