Patents by Inventor Tomoya Sawaki

Tomoya Sawaki 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).

  • Patent number: 7557059
    Abstract: A novel multicomponent oxidation catalyst that can be effectively used in, for example, an epoxidation reaction of olefins, etc., being inexpensive and high in versatility and that exhibits high catalytic activity; and a process for producing an epoxy compound through hydrogen peroxide oxidation of an olefin with the use of the multicomponent oxidation catalyst. There is provided a multicomponent oxidation catalyst comprising a tungsten compound, a quaternary ammonium salt, any of phosphoric acids and/or boric acids and a hydrogen sulfate salt. Further, there is provided a process for producing an epoxy compound, characterized in that an olefin is oxidized with hydrogen peroxide in the presence of the above multicomponent oxidation catalyst. The epoxy compound obtained by this process is useful as an intermediate of agricultural chemicals, medicines or the like, a raw material of various polymers, etc.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: July 7, 2009
    Assignee: Takasago International Corporation
    Inventors: Yoji Hori, Junji Nakamura, Tomoya Sawaki, Shigeru Tanaka
  • Publication number: 20070117993
    Abstract: A novel multicomponent oxidation catalyst that can be effectively used in, for example, an epoxidation reaction of olefins, etc., being inexpensive and high in versatility and that exhibits high catalytic activity; and a process for producing an epoxy compound through hydrogen peroxide oxidation of an olefin with the use of the multicomponent oxidation catalyst. There is provided a multicomponent oxidation catalyst comprising a tungsten compound, a quaternary ammonium salt, any of phosphoric acids and/or boric acids and a hydrogen sulfate salt. Further, there is provided a process for producing an epoxy compound, characterized in that an olefin is oxidized with hydrogen peroxide in the presence of the above multicomponent oxidation catalyst. The epoxy compound obtained by this process is useful as an intermediate of agricultural chemicals, medicines or the like, a raw material of various polymers, etc.
    Type: Application
    Filed: November 24, 2004
    Publication date: May 24, 2007
    Inventors: Yoji Hori, Junji Nakamura, Tomoya Sawaki, Shigeru Tanaka
  • Patent number: 7105684
    Abstract: An object of the present invention is to provide a novel monomer compound having a lactone structure which gives polymers having more excellent feature as resist material, etc. The present invention relates to a compound represented by the following formula [1]: wherein R1 and R2 are an alkyl group; R3 and R4 are each independently hydrogen atom or an alkyl group; R5 is hydrogen atom, acryloyl group or methacryloyl group; and X is a methylene group which may have an alkyl group or an ethylene group which may have an alkyl group. The present invention provides a compound having a lactone structure which gives a polymer having more excellent feature particularly as a resist material and also provides a hydroxy lactone being useful as a material, etc. therefor.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: September 12, 2006
    Assignee: Takasago International Corporation
    Inventors: Tomoya Sawaki, Hiroyuki Kenmochi, Yoji Hori
  • Publication number: 20050059830
    Abstract: An object of the present invention is to provide a novel monomer compound having a lactone structure which gives polymers having more excellent feature as resist material, etc. The present invention relates to a compound represented by the following formula [1]: wherein R1 and R2 are an alkyl group; R3 and R4 are each independently hydrogen atom or an alkyl group; R5 is hydrogen atom, acryloyl group or methacryloyl group; and X is a methylene group which may have an alkyl group or an ethylene group which may have an alkyl group. The present invention provides a compound having a lactone structure which gives a polymer having more excellent feature particularly as a resist material and also provides a hydroxy lactone being useful as a material, etc. therefor.
    Type: Application
    Filed: July 26, 2004
    Publication date: March 17, 2005
    Applicant: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Tomoya Sawaki, Hiroyuki Kenmochi, Yoji Hori
  • Patent number: 6380127
    Abstract: A novel metal composite is provided which is useful as a catalyst or the like by the control of a structure of an apohost and the modification thereof and in which an organic apohost capable of forming a porous structure by a hydrogen bond is compounded with at least one type of transition metallic elements or compounds thereof.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: April 30, 2002
    Assignee: Japan Science and Technology Corporation
    Inventors: Yasuhiro Aoyama, Takehisa Dewa, Tomoya Sawaki