Patents by Inventor Madeline G. F. M. van Grieken

Madeline G. F. M. van Grieken 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).

  • Borated basic metal salt and lubricating oil composition
    Patent number: 4539126
    Abstract: Oil-soluble reaction product of an oil-soluble basic alkaline earth metal salt of an organic acid, in particular of an aromatic carboxylic acid and a boron compound, in particular a boric acid. This product has superior detergent, anti-wear and anti-corrosion properties in engine oils.
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: September 3, 1985
    Assignee: Shell Oil Company
    Inventors: Jan J. Bleeker, Martin Booth, Madeline G. F. M. van Grieken, Wilhelmus J. Krijnen, Gerhard D. van Wijngaarden