Patents by Inventor Toshimasa Ohnishi

Toshimasa Ohnishi 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: 7488762
    Abstract: An object of the present invention is to provide a paste-type cement composition which while retaining adhesion to tooth substance, biocompatibility, surface curability and fluorine sustained-releasability which are the characteristics derived from the conventional glass ionomer cement, reduces water sensitivity which is shortcoming of the conventional glass ionomer cement, enables simple mixing operation, does not adversely affect on the various properties of a cured cement depending on a difference in operators or a skill degree, and can afford various stable properties. There is provided a two paste-type glass ionomer cement comprising a resin-based paste containing a hydrophobic polymerizable monomer and a polymer of acidic group-containing polymerizable monomers which are insoluble to each other, and a water-based paste containing a hydrophilic polymerizable monomer and water which are soluble to each other, in which an acid reactive filler is contained in at least one of pastes.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: February 10, 2009
    Assignees: Kabushiki Kaisha Shofu, Nagase Chemtex Corporation
    Inventors: Satosi Takano, Toshiyuki Nakatsuka, Mikito Deguchi, Shinji Urabe, Toshimasa Ohnishi
  • Patent number: 7416736
    Abstract: This invention concerns antimicrobial compositions that are useful for industrial applications. More specifically, it concerns antimicrobial compositions that, by combining 3-benzo[b]thiene-2-yl-5,6-dihydro-1,4,2-oxathiazine-4-oxide and one or more of 1-[[(3-iodo-2-propynyl)oxy]methoxy]-4-methoxy benzene, 1-chloro-4-[[(3-iodo-2-propynyl)oxy]methoxy] benzene, Zinc 2-pyridine thiol-1-oxide, Copper 2-pyridine thiol-1-oxide, 2-pyridine thiol-1-oxide sodium salt, 2,2-dithio-bis(pyridine-1-oxide), 2-methylthio-4-t-butyl amino-6-cyclopropyl amino-s-triazine, 3-iodo-2-propynyl butylcarbamate (IPBC), 2-(n-octyl)-3(2H)-isothiazolone (OIT), 4,5-dichloro-2-(n-octyl)-3(2H)-isothiazolone (DCOIT), 2,4,5,6-tetrachloro-1,3-benzenedicarbonitrile (chlorothalonil), 1,1-dichloro-N-[(dimethylamino)sulfonyl]-1-fluoro-N-phenyl-methanesulfenamide (dichlofluanid), or 1,1-dichloro-N-[(dimethylamino)sulfonyl]-1-fluoro-N-(4-methylphenyl)-methanesulfenamide (tolylfluanid) have the synergistic effect of these compounds.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: August 26, 2008
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Toshimasa Ohnishi, Ikuya Tanaka
  • Publication number: 20070194479
    Abstract: The present invention related to a thermoplastic resin composition for masterbatches, comprising an organophosphorus compound represented by General Formula (1): wherein R1 and R2 each represent an organic group or a halogen atom, and m and n each represent an integer of 0 to 4, and when m or n is an integer of 2 to 4, R1 and R2 may be the same or different, and a thermoplastic resin, wherein the thermoplastic resin composition for masterbatches contains a phosphorus content of 5000 ppm or more. The thermoplastic resin composition for masterbatches can easily be molded even when it has high phosphorus content and thus flame retardancy.
    Type: Application
    Filed: December 8, 2004
    Publication date: August 23, 2007
    Inventors: Maki Sato, Hideo Takeuchi, Machiko Tanaka, Fuyuhiko Kubota, Shoichi Gyobu, Shigeru Yasuda, Kenichi Nishio, Toshimasa Ohnishi
  • Publication number: 20060247330
    Abstract: An object of the present invention is to provide a paste-type cement composition which while retaining adhesion to tooth substance, biocompatibility, surface curability and fluorine sustained-releasability which are the characteristics derived from the conventional glass ionomer cement, reduces water sensitivity which is shortcoming of the conventional glass ionomer cement, enables simple mixing operation, does not adversely affect on the various properties of a cured cement depending on a difference in operators or a skill degree, and can afford various stable properties. There is provided a two paste-type glass ionomer cement comprising a resin-based paste containing a hydrophobic polymerizable monomer and a polymer of acidic group-containing polymerizable monomers which are insoluble to each other, and a water-based paste containing a hydrophilic polymerizable monomer and water which are soluble to each other, in which an acid reactive filler is contained in at least one of pastes.
    Type: Application
    Filed: April 24, 2006
    Publication date: November 2, 2006
    Applicants: KABUSHIKI KAISHA SHOFU, NAGASE CHEMTEX CORPORATION
    Inventors: Satosi Takano, Toshiyuki Nakatsuka, Mikito Deguchi, Shinji Urabe, Toshimasa Ohnishi
  • Publication number: 20040171600
    Abstract: This invention concerns antimicrobial compositions that are useful for industrial applications.
    Type: Application
    Filed: September 4, 2003
    Publication date: September 2, 2004
    Inventors: Toshimasa Ohnishi, Ikuya Tanaka
  • Patent number: 6143311
    Abstract: The present invention provides novel iodopropargyl derivatives represented by the following formula (1): ##STR1## wherein R.sup.1 is a methoxy group or a cyano group, which have a reduced unpleasant smell and also have a wide antimicrobial spectrum and a high antimicrobial activity. Also, the present invention provides antimicrobial, antifungal and preservative or antimold agents comprising the above derivatives as an active ingredient.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: November 7, 2000
    Assignees: Nagase & Company, Ltd., Nagase Chemicals Ltd.
    Inventors: Yasuo Chikusa, Keita Umetsu, Shigeya Saijo, Masafumi Moriwaki, Toshimasa Ohnishi, Ikuya Tanaka, Yuji Yanagida