Patents by Inventor Mitsuko Ambe

Mitsuko Ambe 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).

  • Thiuram polysulfide heavy metal remover
    Patent number: 3951790
    Abstract: A polymeric compound having thiuram mono- or poly-sulfide linkage shows noteworthy property for removing and collecting heavy metals from the environment. Especially, said compound can remove mercury, in any form, from the environment effectively. On the other hand, said compound shows ability to selectively recover some kinds of heavy metals by the selection of appropriate conditions.
    Type: Grant
    Filed: July 12, 1974
    Date of Patent: April 20, 1976
    Assignee: Sagami Chemical Research Center
    Inventors: Tamotsu Fujisawa, Mitsuko Ambe, Norio Kobayashi, Akiko Osawa, Kiwako Shimizu