Patents by Inventor Frederic Francois Van Quaethoven

Frederic Francois Van Quaethoven 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).

  • Lubricating compositions
    Patent number: 3953179
    Abstract: A lubricating composition for 2-stroke, internal combustion engines comprising 90 to 97% by weight of a lubricant mixture comprising 15 to 80% by weight of a polymer selected from the group consisting of hydrogenated and non-hydrogenated polybutene, polyisobutylene and mixtures thereof, with a mean molecular weight ranging from 250 to 2000, and 0.5 to 10% by weight of a triglyceride of an unsaturated aliphatic carboxylic acid containing 18 carbon atoms, and the remainder being a lubricating oil, and 3 to 10% by weight of conventional lubricating oil additives for 2-stroke engines.
    Type: Grant
    Filed: February 8, 1973
    Date of Patent: April 27, 1976
    Assignee: Labofina S.A.
    Inventors: Georges Jules Souillard, Frederic Francois Van Quaethoven