Patents by Inventor Charles Grubner

Charles Grubner 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).

  • Process for the synthesis of greases permitting a good control of their mechanical behaviour and greases thus obtained
    Patent number: 5133887
    Abstract: Method for synthesizing greases by adding at least one co-surfactant to the mixture of the thickener in the oil. The addition is made at the initial stage of the formation of a three-dimensional filamentary network of the grease at a temperature between the waxy transition temperature and the melting point of the thickener. The process permits good control of the mechanical behaviour of the greases.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: July 28, 1992
    Assignee: Elf France
    Inventors: Pierre Terech, Jean-Marie Thiebaux, Pierre Sanvi, Charles Grubner