Patents by Inventor Tomohiro Kai

Tomohiro Kai 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: 11737957
    Abstract: A dental curable composition capable of use as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. When a block shape usable as the resin material is produced, while mechanical properties and aesthetic properties required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. The dental curable composition includes (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 29, 2023
    Assignee: SHOFU INC.
    Inventors: Toshiyuki Nakatsuka, Toshio Kitamura, Masanori Goto, Tomohiro Kai, Satoshi Takano, Yoshiyuki Jogetsu
  • Publication number: 20180369076
    Abstract: A dental curable composition capable of use as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. When a block shape usable as the resin material is produced, while mechanical properties and aesthetic properties required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. The dental curable composition includes (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).
    Type: Application
    Filed: August 30, 2018
    Publication date: December 27, 2018
    Inventors: Toshiyuki NAKATSUKA, Toshio KITAMURA, Masanori GOTO, Tomohiro KAI, Satoshi TAKANO, Yoshiyuki JOGETSU
  • Patent number: 10085923
    Abstract: The present invention relates to a dental curable composition that can be suitably used as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. An object of the present invention is to provide a dental curable composition in which, when a block shape usable as a resin material for dental cutting and machining is produced while mechanical properties such as hardness, bending strength and compressive strength as well as aesthetic property required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. There is provided a dental curable composition including (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and including 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: October 2, 2018
    Assignee: SHOFU INC.
    Inventors: Toshiyuki Nakatsuka, Toshio Kitamura, Masanori Goto, Tomohiro Kai, Satoshi Takano, Yoshiyuki Jogetsu
  • Patent number: 9988803
    Abstract: A urinal having the bowl surface formed by only the front face portion in an upper region which does not have any forwardly projecting plate-like side walls at opposite sides thereof as in the conventional urinal. Flush water cleans a wider part of the bowl surface than in the prior art as well as reduce an area of the bowl surface that is not cleaned and provide an improved cleanliness and sanitation of the bowl surface. The urinal includes: a bowl surface being arranged so as to situate between a line segment connecting the left and right side edges and an arcuate segment of a circle having a diameter corresponding to the line segment, as viewed in the horizontal section through the flush water discharging device.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: June 5, 2018
    Assignee: TOTO LTD.
    Inventors: Minoru Tani, Yusuke Takiguchi, Yuichi Furuta, Tomohiro Kai, Hironori Yamasaki
  • Publication number: 20160000660
    Abstract: The present invention relates to a dental curable composition that can be suitably used as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. An object of the present invention is to provide a dental curable composition in which, when a block shape usable as a resin material for dental cutting and machining is produced while mechanical properties such as hardness, bending strength and compressive strength as well as aesthetic property required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. There is provided a dental curable composition including (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and including 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.
    Type: Application
    Filed: June 12, 2015
    Publication date: January 7, 2016
    Inventors: Toshiyuki NAKATSUKA, Toshio KITAMURA, Masanori GOTO, Tomohiro KAI, Satoshi TAKANO, Yoshiyuki JOGETSU
  • Publication number: 20150275495
    Abstract: A urinal having the bowl surface formed by only the front face portion in an upper region which does not have any forwardly projecting plate-like side walls at opposite sides thereof as in the conventional urinal. Flush water cleans a wider part of the bowl surface than in the prior art as well as reduce an area of the bowl surface that is not cleaned and provide an improved cleanliness and sanitation of the bowl surface. The urinal includes: a bowl surface being arranged so as to situate between a line segment connecting the left and right side edges and an arcuate segment of a circle having a diameter corresponding to the line segment, as viewed in the horizontal section through the flush water discharging device.
    Type: Application
    Filed: March 13, 2015
    Publication date: October 1, 2015
    Inventors: Minoru TANI, Yusuke TAKIGUCHI, Yuichi FURUTA, Tomohiro KAI, Hironori YAMASAKI
  • Publication number: 20140008642
    Abstract: An ink composition that is capable of forming a low molecular weight luminescent material having no repeating structure into a favorable film within a partition wall by coating by a nozzle printing method, an organic EL device using the ink composition, and the method for producing the organic EL device are to be provided. The ink composition is used for forming an organic luminescent medium layer of an organic EL device by a nozzle printing method, in which an organic luminescent layer as one of the organic layer contains a low molecular weight luminescent material that has no repeating structure and a polymer material having a repeating structure, which are mixed with each other, and the polymer material is a nonconductive material.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 9, 2014
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Takayuki Morita, Takuma Oouchi, Tomohiro Kai, Yoshihiro Suzuki
  • Jig
    Patent number: D798685
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: October 3, 2017
    Assignee: Shofu Inc.
    Inventors: Norihiro Matsui, Tomohiro Kai, Masanori Goto
  • Jig
    Patent number: D811843
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: March 6, 2018
    Assignee: SHOFU INC.
    Inventors: Norihiro Matsui, Masayoshi Nishizawa, Tomohiro Kai
  • Patent number: D925317
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: July 20, 2021
    Assignee: SHOFU INC.
    Inventors: Tomohiro Kai, Masayoshi Nishizawa