Patents by Inventor Robert Stuart Grace

Robert Stuart Grace 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-MOLECULAR WEIGHT POLYISOBUTYL-SUBSTITUTED AMINES AS DISPERSANT BOOSTERS
    Publication number: 20120000118
    Abstract: A fuel additive composition comprising (A) polyisobutyl-based nitrogen-containing dispersants with MN of the polyisobutyl group of from 650 to 1800 Dalton, (B) carrier oils substantially free of nitrogen and (C) polyisobutyl-based dispersant boosters with MN of the polyisobutyl group of from 200 to 650 Dalton, with the proviso that the difference between the MN of the polyisobutyl group of component (A) and the MN of the polyisobutyl group of component (C) is more than 100 Dalton. Said component (C) is especially useful as an intake valve clean-up booster in gasoline-operated port fuel injection internal combustion engines.
    Type: Application
    Filed: June 1, 2011
    Publication date: January 5, 2012
    Applicant: BASF SE
    Inventors: Arno LANGE, Peter Schreyer, Robert Stuart Grace