Patents by Inventor Yorio Fujita

Yorio Fujita 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).

  • Telomerization of tetrafluoroethylene
    Patent number: 4346250
    Abstract: Fluoroalkanols of the formula:H(CF.sub.2 CF.sub.2).sub.n CH.sub.2 OH (I)are prepared by telomerization of tetrafluoroethylene with methanol in a batch system. The reaction is carried out while introducing tetrafluoroethylene continuously into the reaction system. The production of fluoroalkanols of the formula (I) wherein n is an integer of 5 or more is suppressed and the production of fluoroalkanols of the formula (I) wherein n is an integer of 4 or less is enhanced.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: August 24, 1982
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Takaomi Satokawa, Tuneo Fujii, Akira Ohmori, Yorio Fujita