Patents by Inventor Tomokazu Sugawara

Tomokazu Sugawara 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).

  • Publication number: 20210061733
    Abstract: Fluorine gas is introduced to a raw material liquid containing a reaction inducer and a fluorinated hydrocarbon represented by CpHqClrFs (in the formula, p is an integer of 3 to 18, q is an integer of 0 to 3, r is an integer of 0 to 9, and s is an integer of 5 to 30) and having no carbon-carbon unsaturated bond to give tetrafluoromethane. The reaction inducer is a halogen-containing carbon compound liquid at room temperature and pressure and is reacted with fluorine gas to induce a reaction of forming tetrafluoromethane from the fluorinated hydrocarbon and the fluorine gas. The reaction inducer is contained at a content of more than 0% by mass and not more than 10% by mass when the total content of the fluorinated hydrocarbon and the reaction inducer contained in the raw material liquid is 100% by mass.
    Type: Application
    Filed: December 11, 2018
    Publication date: March 4, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Yohsuke FUKUCHI, Tomokazu SUGAWARA, Shinya OGURO, Hiroshi KOBAYASHI
  • Publication number: 20200407295
    Abstract: A method for producing tetrafluoromethane as follows is unlikely to damage a reaction apparatus and can produce tetrafluoromethane safely, inexpensively, and stably. To a raw material liquid containing a fluorinated hydrocarbon represented by chemical formula CpHqClrFs (wherein p is an integer of 3 to 18, q is an integer of 0 to 3, r is an integer of 0 to 9, and s is an integer of 5 to 30) and having no carbon-carbon unsaturated bond, fluorine gas is introduced, and concurrently a reaction inducer is introduced in a gas state, giving tetrafluoromethane. The reaction inducer is reacted with fluorine gas to induce a reaction of forming tetrafluoromethane from the fluorinated hydrocarbon and the fluorine gas and is at least one reaction inducer selected from a hydrocarbon gaseous at normal temperature and pressure and hydrogen gas.
    Type: Application
    Filed: December 25, 2018
    Publication date: December 31, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Yohsuke FUKUCHI, Tomokazu SUGAWARA, Shinya OGURO, Hiroshi KOBAYASHI
  • Publication number: 20190040175
    Abstract: There is provided an active energy ray-curable composition having excellent storage stability. The active energy ray-curable composition includes: active energy ray-curable compound (A) having an unsaturated ethylenic double bond; thiol compound (B) having two or more mercapto groups in one molecule; reaction inhibitor (C) configured to inhibit a reaction between the unsaturated ethylenic double bond and the mercapto groups; radical polymerization inhibitor (D); and water (E), wherein the content of water (E) is 0.05 ppm by mass or more and less than 1% by mass. When the total content of active energy ray-curable compound (A) and thiol compound (B) is 100 parts by mass, the content of reaction inhibitor (C) is 0.005 parts by mass or more and 10 parts by mass or less, and the content of radical polymerization inhibitor (D) is 0.005 parts by mass or more and 5 parts by mass or less.
    Type: Application
    Filed: February 2, 2017
    Publication date: February 7, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Mina ONISHI, Tomokazu SUGAWARA
  • Patent number: 5166328
    Abstract: Novel S-adenosylmethionine derivatives useful as medicament are provided which are represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represent straight or branch alkyl or alkenyl having 1-10 carbon atoms; m is 1-3; and A is an anion of inorganic or organic acids.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: November 24, 1992
    Assignee: Fuji Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Kurobe, Tomokazu Sugawara, Takeshi Endo