Patents by Inventor Shiro Nakatsuka

Shiro Nakatsuka 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: 9150422
    Abstract: Disclosed is a porous metal oxide obtained by subjecting metal alkoxide and/or a partially hydrolyzed condensate of the metal alkoxide to a sol-gel reaction in the presence of terminally branched copolymer particles represented by the following general formula (1) and having a number average molecular weight of not more than 2.5×104 to obtain an organic-inorganic composite and removing the terminally branched copolymer particles from the composite.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: October 6, 2015
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Norio Nakayama, Toshihiko Takaki, Haruhiko Fukumoto, Kaori Matoishi, Shiro Nakatsuka, Naoshi Nagai, Eiichi Takahashi, Yukiko Enomoto
  • Patent number: 8604140
    Abstract: The invention provides a method for preventing fouling in chemical equipment, comprising adding an antifouling agent which comprises a polyoxyalkylene polymer having Mn of 30,000 or less to a component in the chemical equipment.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: December 10, 2013
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Naoshi Nagai, Shiro Nakatsuka, Kazuoki Nakai, Kenji Sugimura, Yasushi Tohi, Ken Yoshitsugu, Hideki Bando, Yasuyuki Harada
  • Publication number: 20120095167
    Abstract: The invention provides a method for preventing fouling in chemical equipment, comprising adding an antifouling agent which comprises a polyoxyalkylene polymer having Mn of 30,000 or less to a component in the chemical equipment.
    Type: Application
    Filed: March 31, 2010
    Publication date: April 19, 2012
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Naoshi Nagai, Shiro Nakatsuka, Kazuoki Nakai, Kenji Sugimura, Yasushi Tohi, Ken Yoshitsugu, Hideki Bando, Yasuyuki Harada
  • Publication number: 20110318249
    Abstract: Disclosed is a porous metal oxide obtained by subjecting metal alkoxide and/or a partially hydrolyzed condensate of the metal alkoxide to a sol-gel reaction in the presence of terminally branched copolymer particles represented by the following general formula (1) and having a number average molecular weight of not more than 2.
    Type: Application
    Filed: March 12, 2010
    Publication date: December 29, 2011
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Norio Nakayama, Toshihiko Takaki, Haruhiko Fukumoto, Kaori Matoishi, Shiro Nakatsuka, Naoshi Nagai, Eiichi Takahashi, Yukiko Enomoto
  • Patent number: 7977429
    Abstract: Polymers having polyolefin segments as the side chain, with a structural unit represented by the following Formula (1): wherein A is an olefin polymer having a weight average molecular weight of 400 to 500,000; R is H, an alkyl group, or an aralkyl group; W and Z are each O, HN, or S; and x and y are each 0 or 1, with the proviso that at least one of them is 1. The polymer can be applied as an antistatic agent, a cosmetic additive, a releasing agent for toner, a pigment dispersant, a lubricant for vinyl chloride resins, a coating material, an emulsion composition and the like.
    Type: Grant
    Filed: January 20, 2005
    Date of Patent: July 12, 2011
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Naoshi Nagai, Masahiko Mitsuzuka, Kazuoki Nakai, Motoaki Isokawa, Shiro Nakatsuka, Daiki Taneichi, Shirou Honma, Toshimitsu Narutaki
  • Publication number: 20110118361
    Abstract: Provided are polymer particles composed of a terminally branched copolymer represented by the following general formula (1) and having a number average molecular weight of not more than 2.5×104, wherein, in the formula, A represents a polyolefin chain; R1 and R2 each represent a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, and at least one of R1 and R2 is a hydrogen atom; and X1 and X2 may be the same or different, and each a linear or branched polyalkylene glycol group.
    Type: Application
    Filed: January 6, 2009
    Publication date: May 19, 2011
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kaori Matoishi, Shiro Nakatsuka, Naoshi Nagai, Toshihiko Takaki, Haruhiko Fukumoto, Norio Nakayama
  • Publication number: 20080305292
    Abstract: An antifouling material and an antifouling film, which are excellent in hydrophilicity and have such a characteristic that the surface is self-cleaned with rain water or the like, or can be easily cleaned up even when a contaminant adheres to the surface thereof, can be obtained by copolymerizing a composition containing an acrylamide derivative having at least one hydroxyl group in the molecule and a compound having at least two (meth)acryloyloxy groups in the molecule.
    Type: Application
    Filed: July 29, 2008
    Publication date: December 11, 2008
    Inventors: Kouju OKAZAKI, Ryouiti SEKI, Shiro NAKATSUKA, Osamu NAKAMURA
  • Publication number: 20070154431
    Abstract: Polymers having polyolefin segments as the side chain, with a structural unit represented by the following Formula (1): wherein A is an olefin polymer having a weight average molecular weight of 400 to 500,000; R is H, an alkyl group, or an aralkyl group; W and Z are each O, HN, or S; and x and y are each 0 or 1, with the proviso that at least one of them is 1. The polymer can be applied as an antistatic agent, a cosmetic additive, a releasing agent for toner, a pigment dispersant, a lubricant for vinyl chloride resins, a coating material, an emulsion composition and the like.
    Type: Application
    Filed: January 20, 2005
    Publication date: July 5, 2007
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Naoshi Nagai, Masahiko Mitsuzuka, Kazuoki Nakai, Motoaki Isokawa, Shiro Nakatsuka, Daiki Taneichi, Shirou Honma, Toshimitsu Narutaki
  • Publication number: 20060165934
    Abstract: An antifouling material and an antifouling film, which are excellent in hydrophilicity and have such a characteristic that the surface is self-cleaned with rain water or the like, or can be easily cleaned up even when a contaminant adheres to the surface thereof, can be obtained by copolymerizing a composition containing an acrylamide derivative having at least one hydroxyl group in the molecule and a compound having at least two (meth)acryloyloxy groups in the molecule.
    Type: Application
    Filed: December 26, 2003
    Publication date: July 27, 2006
    Applicant: TOHCELLO CO., LTD.
    Inventors: Kouju Okazaki, Ryouiti Seki, Shiro Nakatsuka, Osamu Nakamura
  • Patent number: 6797805
    Abstract: Organic polymers having water contact angles of 20° or smaller, preferably 7° or smaller and equipped with both high wettability and high transparency. The organic polymers may contain as partial structures polar structures of about 3 debyes or higher in dipole moment and are available especially from polymerization of polymerizable compounds having alkylene(thio)urea structures.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: September 28, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Koju Okazaki, Ryouichi Seki, Shiro Nakatsuka
  • Publication number: 20030166808
    Abstract: Organic polymers having water contact angles of 20° or smaller, preferably 7° or smaller and equipped with both high wettability and high transparency. The organic polymers may contain as partial structures polar structures of about 3 debyes or higher in dipole moment and are available especially from polymerization of polymerizable compounds having alkylene(thio)urea structures.
    Type: Application
    Filed: June 28, 2002
    Publication date: September 4, 2003
    Inventors: Koju Okazaki, Ryouichi Seki, Shiro Nakatsuka