Patents by Inventor Masaru Yositake

Masaru Yositake 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 producing 1,1,1,2-tetrafluoroethane
    Patent number: 5426253
    Abstract: A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro-1,1,1,2-tetrafluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst consisting essentially of a Group VIII element as the main component and at least one element selected from the group consisting of Group IB elements, lanthanum and lanthanide elements, as an additional component.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: June 20, 1995
    Assignee: Asahi Glass Company Ltd.
    Inventors: Shinsuke Morikawa, Shunichi Samejima, Masaru Yositake, Shin Tatematsu