Patents by Inventor Agnes Chive

Agnes Chive 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).

  • Colloidal thio-phosphorous products derived from colloidal lime, their preparation and uses
    Patent number: 5985805
    Abstract: Novel colloidal calcium thio-phosphorous products are described which can be obtained by a process comprising adding at least one phosphorus sulphide to colloidal lime in the presence of solvent, then heating the mixture, with stirring, then eliminating the solvent. These products can be used as anti-wear and extreme pressure additives in lubricating oils.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: November 16, 1999
    Assignee: Institut Francais du Petrole
    Inventors: Bruno Delfort, Maurice Born, Agnes Chive
  • Colloidal calcium hydroxide, its preparation and uses
    Patent number: 5756432
    Abstract: Novel colloidal products are described, containing calcium hydroxide in the center of micelles which are stabilised in an organic medium by a shell of a surfactant, in a reversed micelle. The products are obtained by reacting calcium oxide CaO, calcium hydride CaH.sub.2 or calcium metal with water in an organic medium in the present of a surfactant such as an alkine-earth or alkali metal alkylaryl sulphonate. They are used mainly as synthesis intermediates in reactions requiring lime to be introduced into an organic medium, or as detergent additives in lubricating oils.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: May 26, 1998
    Assignee: Institut Francais du Petrole
    Inventors: Maurice Born, Agnes Chive, Bruno Delfort