Patents by Inventor Raymond Bergstra

Raymond Bergstra 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).

  • Antirust/dispersant additive for lubricants
    Patent number: 5362411
    Abstract: Reaction products of hydrocarbylsuccinic anhydrides, polyamines and triazoles, as exemplified by XRT 2143A, have been found to be effective rust/corrosion inhibiting, thermal stabilizing and superior dispersant additives with excellent cleanliness feature for fuels and lubricants. Enhanced antioxidancy is also observed upon boration of these reaction products.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: November 8, 1994
    Assignee: Mobil Oil Corporation
    Inventors: Raymond Bergstra, Andreas Logothetis, William F. Olszewski, Shi-Ming Wu