Patents by Inventor Keiichirou Watanabe

Keiichirou Watanabe 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 perfluoropolyoxyalkylene peroxide compound
    Patent number: 10029981
    Abstract: The present invention provides a process for producing a perfluoropolyoxyalkylene peroxide compound comprising a step of reacting a perfluoroalkene with oxygen, wherein the reaction of the perfluoroalkene with oxygen is performed in a microreactor.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: July 24, 2018
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Keiichirou Watanabe, Hideki Nakaya, Motohisa Shino, Tatsuya Takakuwa, Kazunori Morimoto
  • Process for producing perfluoropolyoxyalkylene peroxide compound
    Patent number: 9944595
    Abstract: The present invention provides a process for producing a perfluoropolyoxyalkylene peroxide compound comprising a step of reacting a perfluoroalkene with oxygen, wherein the reaction of the perfluoroalkene with oxygen is performed under ultraviolet irradiation and in the presence of a fluorine source.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 17, 2018
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Keiichirou Watanabe, Hideki Nakaya, Motohisa Shino, Tatsuya Takakuwa, Kazunori Morimoto
  • PROCESS FOR PRODUCING PERFLUOROPOLYOXYALKYLENE PEROXIDE COMPOUND
    Publication number: 20170166522
    Abstract: The present invention provides a process for producing a perfluoropolyoxyalkylene peroxide compound comprising a step of reacting a perfluoroalkene with oxygen, wherein the reaction of the perfluoroalkene with oxygen is performed in a microreactor.
    Type: Application
    Filed: December 8, 2016
    Publication date: June 15, 2017
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keiichirou WATANABE, Hideki NAKAYA, Motohisa SHINO, Tatsuya TAKAKUWA, Kazunori MORIMOTO
  • PROCESS FOR PRODUCING PERFLUOROPOLYOXYALKYLENE PEROXIDE COMPOUND
    Publication number: 20170166521
    Abstract: The present invention provides a process for producing a perfluoropolyoxyalkylene peroxide compound comprising a step of reacting a perfluoroalkene with oxygen, wherein the reaction of the perfluoroalkene with oxygen is performed under ultraviolet irradiation and in the presence of a fluorine source.
    Type: Application
    Filed: December 8, 2016
    Publication date: June 15, 2017
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keiichirou WATANABE, Hideki NAKAYA, Motohisa SHINO, Tatsuya TAKAKUWA, Kazunori MORIMOTO
  • Method for producing endosseous implants
    Patent number: 4818559
    Abstract: An improved method for producing endosseous implants by thermally spraying a ceramic material onto the surface of a metallic core material having a rough surface, i.e. a maximum surface roughness of 15 to 100 .mu.m, which can produce implants which have excellent characteristics in regard to the metallic material and ceramic material and do not dissolve out harmful metal ions. The endosseous implants are useful for implantation in various bones including tooth roots and joints in living bodies.
    Type: Grant
    Filed: July 29, 1986
    Date of Patent: April 4, 1989
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masaaki Hama, Keiichirou Watanabe, Hiroshi Ishimaru
  • Method for the production of endosseous implants
    Patent number: 4687675
    Abstract: An improved method for the production of endosseous implants is disclosed. The method includes thermally spraying a hydroxyapatite-containing powder onto the surface of a metallic core material, and treating the resultant product with an aqueous solution which does not substantially dissolve the hydroxyapatite but can dissolve calcium oxide, to thereby dissolve out alkaline components. The endosseous implants of this invention have excellent mechanical properties and excellent affinity to the living body without hematolysis, and hence, are useful for the treatment or recovery of defective or lost bones, joints and tooth roots.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: August 18, 1987
    Assignee: Sumitomo Chemical Company
    Inventors: Kazuhiko Nakano, Keiichirou Watanabe