Patents by Inventor Hubert Knoche

Hubert Knoche 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 with lactam or thiolactam-containing copolymers
    Patent number: 4170561
    Abstract: There are disclosed novel lubricating compositions containing a major proportion of a lubricating oil and a minor proportion of an oil soluble polymer additive, and possibly other additives, wherein said polymer additive is a copolymer of ethylene, a monoolefin having 3 to 6 carbon atoms or a monoolefin having 3 to 6 carbon atoms and a non-conjugated diene with one or more specific nitrogenous monomers, said polymer having a reduced viscosity, measured in decalin at 135.degree. C., comprised between 0.5 and 2 and a polydispersity lower than 5.Such a polymer additive improves the oil viscosity index while ensuring the dispersion of the slurry it may contain.
    Type: Grant
    Filed: March 15, 1978
    Date of Patent: October 9, 1979
    Assignee: Entreprise de Recherches et d'Activities Petrolieres (E.R.A.P.)
    Inventors: Gilbert Chapelet, Hubert Knoche, Gilbert Marie
  • Novel lubricating compositions containing nitrogen containing hydrocarbon backbone polymeric additives
    Patent number: 4092255
    Abstract: There are disclosed novel lubricating compositions containing a major proportion of a lubricating oil and a minor proportion of an oil soluble polymer additive, and possibly other additives, wherein said polymer additive is a copolymer of ethylene, a monoolefin having 3 to 6 carbon atoms or a monoolefin having 3 to 6 carbon atoms and a non-conjugated diene with one or more specific nitrogenous monomers, said polymer having a reduced viscosity, measured in decalin at 135.degree. C, comprised between 0.5 and 2 and a polydispersity lower than 5.Such a polymer additive improves the oil viscosity index while ensuring the dispersion of the slurry it may contain.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: May 30, 1978
    Assignee: Entreprise de Recherches et d'Activites Petrolieres (E.R.A.P.)
    Inventors: Gilbert Chapelet, Hubert Knoche, Gilbert Marie