Patents by Inventor Aki Yonekura

Aki Yonekura 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).

  • Bacteriostatic compositions and use in metal working fluids
    Patent number: 6153566
    Abstract: The present invention concerns bacteriostatic compositions comprising a bacteriostatic agent selected from the group comprising amides and amine salts of normal heptanoic acid and amides, amine salts and alkyleneoxide addition compounds of undecylenic acid. It also concerns the use of said compositions in the field of metal working fluids.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: November 28, 2000
    Assignee: Elf Atochem S.A.
    Inventors: Aki Yonekura, Toshifumi Hatanaka, Tetsushi Kawamura, Henri-Jean Caupin