Patents by Inventor Serge Laemlin

Serge Laemlin 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).

  • Lubricants with 5-tert.-butyl-4-hydroxy-3-methylphenyl substituted fatty acid esters
    Patent number: 6750184
    Abstract: The present invention relates to improved lubricant compositions highly resistant to oxidative degradation comprising selected 5-tert.-butyl-4hydroxy-3-methylphenyl substituted fatty acid esters, diphenylamines and zinc dithiophosphates. The compositions as defined above are characterized by superior antioxidative properties. This can be demonstrated in various standard tests such as Deposit and Oxidation Panel Test (DOPT) and Pressurized Differential Scanning Calorimetry (PDSC).
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: June 15, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Marc Ribeaud, Paul Dubs, Serge Laemlin
  • Lubricants with 5-tert.-butyl-4-hydroxy-3-methylphenyl substituted fatty acid esters
    Publication number: 20020065201
    Abstract: The present invention relates to improved lubricant compositions highly resistant to oxidative degradation comprising selected 5-tert. -butyl-4hydroxy-3-methylphenyl substituted fatty acid esters, diphenylamines and zinc dithiophosphates. The compositions as defined above are characterized by superior antioxidative properties. This can be demonstrated in various standard tests such as Deposit and Oxidation Panel Test (DOPT) and Pressurized Differential Scanning Calorimetry (PDSC).
    Type: Application
    Filed: September 19, 2001
    Publication date: May 30, 2002
    Inventors: Marc Ribeaud, Paul Dubs, Serge Laemlin