Patents by Inventor Athuhiko Hiai

Athuhiko Hiai 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 germanes
    Patent number: 4656013
    Abstract: There is disclosed a process for producing germanes by reducing germanium halide with a mixture of alkylaluminum hydride and trialkylaluminum, in which a treatment for reducing the content of trialkylaluminum in the mixture to 10 mol. % or less relative to the alkylaluminum hydride is carried out prior to the reduction reaction. As to the treatment for reducing the content of trialkylaluminum in the mixture, there are provided, for example, distillation, recrystallization, complex formation followed by separation, pyrolysis and decomposition by hydrogenation and addition of alkylaluminum halide to said mixture.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: April 7, 1987
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Athuhiko Hiai, Kazuo Wakimura, Masao Tanaka