Patents by Inventor Akihiko Konishi

Akihiko Konishi 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).

  • Method for treating contact lenses
    Patent number: 4836859
    Abstract: Contact lenses are treated with hydrogen peroxide and the remaining hydrogen peroxide is decomposed by electrolysis.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: June 6, 1989
    Assignee: Mitsubishi Gas Chemical Co., Ltd.
    Inventors: Akihiko Konishi, Masamichi Mizukami, Masanori Shimuta
  • Process for the production of polyphenylene ethers having a desired polymerization degree
    Patent number: 3970640
    Abstract: Polyphenylene ethers, self-condensation products of phenols, having desired polymerization degree are prepared by a process which comprises terminating the reaction by adding simultaneously at least one member selected from the class consisting of dioxybenzenes and/or benzoquinones and a reducing agent to the reaction medium at the stage of the desired polymerization degree in the oxidative polycondensation of phenols in the presence of a complex catalyst.
    Type: Grant
    Filed: June 26, 1974
    Date of Patent: July 20, 1976
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Eiichi Yonemitsu, Akitoshi Sugio, Takao Kawaki, Akihiko Konishi, Zempei Mizutani
  • Process for polymerizing phenols to produce polyphenylene oxides of low molecular weight
    Patent number: 3962180
    Abstract: Polyphenylene oxides of low molecular weight are produced by oxidative polymerization of phenols in the presence of a catalyst and the amount of solvent is limited and the phenols are not added to the reaction medium at one time, but continuously over a certain period of time.
    Type: Grant
    Filed: October 30, 1974
    Date of Patent: June 8, 1976
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Eiichi Yonemitsu, Akitoshi Sugio, Akihiko Konishi