Patents by Inventor Shoko Imaizumi

Shoko Imaizumi 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).

  • Publication number: 20220075573
    Abstract: An information processing apparatus includes circuitry and a memory, the circuitry performing perceptual image conversion of converting two image data generated from one color image data respectively into perceptual images based on human visual characteristics, collation of determining whether the two perceptual images converted by the perceptual image conversion are same, and comparison result outputting of outputting the comparison result by the collation.
    Type: Application
    Filed: September 8, 2021
    Publication date: March 10, 2022
    Applicants: Ricoh Company, Ltd., National University Corporation Chiba University
    Inventors: Takahiko Horiuchi, Ren Nakamura, Midori Tanaka, Shoko Imaizumi, Tsuyoshi Sakamoto, Tatsuroh Yoshioka, Kazuhiro Miyabe
  • Publication number: 20210301513
    Abstract: The object of the present invention is to provide a washdown flush toilet which can maintain effective waste discharging performance even with a relatively smaller amount of flush water. The present invention is a washdown flush toilet including: a bowl part configured to receive waste, and a water discharge trap conduit connected to a lower portion of the bowl part. The water discharge trap conduit includes: an inlet pipe part whose one end is continuous or connected to the lower portion of the bowl part; a trap ascending pipe part whose one end is continuous or connected to the other end of the inlet pipe part and which forms an ascending flow channel; and a trap descending pipe part whose one end is continuous or connected to the other end of the trap ascending pipe part and which forms a descending flow channel.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 30, 2021
    Applicant: TOTO LTD.
    Inventor: Shoko IMAIZUMI
  • Publication number: 20210301515
    Abstract: The object of the present invention is to provide a washdown flush toilet which can maintain effective waste discharging performance even with a relatively smaller amount of flush water. The present invention is a washdown flush toilet including: a bowl part configured to receive waste, and a water discharge trap conduit connected to a lower portion of the bowl part. The water discharge trap conduit includes: an inlet pipe part whose one end is continuous or connected to the lower portion of the bowl part; a trap ascending pipe part whose one end is continuous or connected to the other end of the inlet pipe part and which forms an ascending flow channel; and a trap descending pipe part whose one end is continuous or connected to the other end of the trap ascending pipe part and which forms a descending flow channel.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 30, 2021
    Applicant: TOTO LTD.
    Inventor: Shoko IMAIZUMI
  • Patent number: 10526775
    Abstract: A toilet according to an embodiment includes a toilet body and a water drainage socket. The toilet body has a water drainage outlet on a back surface thereof. The water drainage socket connects the water drainage outlet and an inlet of a water drainage pipe that is provided on a wall surface. The back surface of the toilet body is provided with an opening and a guide part. The opening is provided to insert therethrough a tubular member that extends from the wall surface in a case where the toilet body is mounted on the wall surface. The guide part guides the tubular member that is provided in a state where it is inserted through the opening so as to move to an outer side of the water drainage socket in a case where the toilet body is mounted on the wall surface.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: January 7, 2020
    Assignee: TOTO LTD.
    Inventors: Kenichi Nakamura, Hiroshi Hashimoto, Shuichi Nagashima, Mayu Okubo, Shoko Imaizumi, Shinichi Urata, Isami Sakaba, Haruka Saito, Takumi Tsuchitani
  • Patent number: 10428507
    Abstract: A flush toilet according to an embodiment includes a main water guide channel, a bending water guide channel, a rim water guide channel, and a retention part. The bending water guide channel bends a flow direction of washing water supplied from the main water guide channel. The rim water guide channel causes the washing water to flow toward and to be spouted from a water spout part. The retention part is formed in at least the bending water guide channel. An upper part of the retention part is formed into an opened concave shape and the retention part retains a part of the washing water. Furthermore, the retention part is formed in such a manner that an upper end thereof on a downstream side is horizontal to a bottom surface of the water spout part or higher than the bottom surface of the water spout part.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: October 1, 2019
    Assignee: TOTO LTD.
    Inventors: Hiroshi Hashimoto, Shinichi Urata, Shuichi Nagashima, Mayu Okubo, Shoko Imaizumi, Daisuke Yamamoto, Kenichi Nakamura, Takumi Tsuchitani
  • Patent number: 10344464
    Abstract: The present invention is a flush toilet (1) including: a bowl portion (8) having a bowl-shaped waste receiving surface (16), a rim portion (18), and a well portion (20) formed at the bottom of the waste receiving surface; a discharge trap pipe (12) connected to the bottom portion of the well portion; a flush water guide portion (40b) disposed on the waste receiving surface at the rear of the well portion so that flush water is directed toward the side wall surface inside the well portion; and a liquid membrane spouting portion (24) disposed on the rim portion, wherein this liquid membrane spouting portion induces a vertical circulating flow in the well portion, produced when discharged flush water assumes a liquid membrane form and collides with a flush water guide portion, and the colliding flush water drops along the side wall surface of the well portion.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: July 9, 2019
    Assignee: TOTO LTD.
    Inventors: Hiroshi Hashimoto, Shinichi Urata, Shuichi Nagashima, Mayu Okubo, Shoko Imaizumi, Daisuke Yamamoto, Kenichi Nakamura, Takumi Tsuchitani
  • Patent number: 10323400
    Abstract: A wash-out type toilet according to an embodiment includes a bowl that receives waste and a drainage water trap. The drainage water trap includes an inlet that is connected to a lower part of the bowl, a rise pipeline that is connected to the inlet and extends upward toward its own top part, a fall pipeline that extends downward toward an inlet of a drainage water pipe that is arranged on a floor surface, and an intermediate pipeline with an upstream-side portion that is connected to the rise pipeline and a downstream-side portion that is connected to the fall pipeline. Furthermore, the intermediate pipeline includes a retention surface that is formed to slope downward from an upstream side to a downstream side and temporarily retains waste at a time of toilet washing.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: June 18, 2019
    Assignee: TOTO LTD.
    Inventors: Hiroshi Hashimoto, Shinichi Urata, Shuichi Nagashima, Mayu Okubo, Shoko Imaizumi, Daisuke Yamamoto, Kenichi Nakamura, Takumi Tsuchitani
  • Patent number: 10273672
    Abstract: A flush toilet includes a toilet main unit, a reservoir tank, and a connecting pipe member configured to connect the toilet main unit and the reservoir tank in a watertight manner after the connecting pipe member is inserted into the reservoir tank so that the reservoir tank is assembled to a predetermined installation position. The connecting pipe member includes a communicating pipe portion configured to communicate between the conduit of the toilet main unit and an interior of the tank when one end of the connecting member is inserted from the interior of the tank through the outlet of the tank into the inlet of the conduit of the toilet main unit. A horizontal adjustment portion configured to adjust the orientation of the reservoir tank to a horizontal state is provided on the toilet main unit or on the reservoir tank.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: April 30, 2019
    Assignee: TOTO LTD.
    Inventors: Tatsunari Harashima, Ryoko Ishimaru, Kenichi Nakamura, Shoko Imaizumi
  • Patent number: 10174490
    Abstract: A flush toilet includes a reservoir tank assembled from above or behind to a predetermined installation position on the rear side of the conduit of a toilet main unit; a connecting pipe member, one end of which is disposed on the conduit of the toilet main unit, and the other end of which is connected to a reservoir tank; a tank-side connecting portion, disposed on the front side of the reservoir tank and connected to a connecting pipe member; and a seal member, connected in a watertight manner between a connecting pipe member and a tank-side connecting portion.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: January 8, 2019
    Assignee: TOTO LTD.
    Inventors: Tatsunari Harashima, Ryoko Ishimaru, Kenichi Nakamura, Shoko Imaizumi
  • Publication number: 20180202140
    Abstract: A toilet according to an embodiment includes a toilet body and a water drainage socket. The toilet body has a water drainage outlet on a back surface thereof. The water drainage socket connects the water drainage outlet and an inlet of a water drainage pipe that is provided on a wall surface. The back surface of the toilet body is provided with an opening and a guide part. The opening is provided to insert therethrough a tubular member that extends from the wall surface in a case where the toilet body is mounted on the wall surface. The guide part guides the tubular member that is provided in a state where it is inserted through the opening so as to move to an outer side of the water drainage socket in a case where the toilet body is mounted on the wall surface.
    Type: Application
    Filed: January 9, 2018
    Publication date: July 19, 2018
    Inventors: Kenichi Nakamura, Hiroshi Hashimoto, Shuichi Nagashima, Mayu Okubo, Shoko Imaizumi, Shinichi Urata, Isami Sakaba, Haruka Saito, Takumi Tsuchitani
  • Publication number: 20180195261
    Abstract: A flush toilet according to an embodiment includes a main water guide channel, a bending water guide channel, a rim water guide channel, and a retention part. The bending water guide channel bends a flow direction of washing water supplied from the main water guide channel. The rim water guide channel causes the washing water to flow toward and to be spouted from a water spout part. The retention part is formed in at least the bending water guide channel. An upper part of the retention part is formed into an opened concave shape and the retention part retains a part of the washing water. Furthermore, the retention part is formed in such a manner that an upper end thereof on a downstream side is horizontal to a bottom surface of the water spout part or higher than the bottom surface of the water spout part.
    Type: Application
    Filed: January 4, 2018
    Publication date: July 12, 2018
    Inventors: Hiroshi Hashimoto, Shinichi Urata, Shuichi Nagashima, Mayu Okubo, Shoko Imaizumi, Daisuke Yamamoto, Kenichi Nakamura, Takumi Tsuchitani
  • Publication number: 20180195262
    Abstract: A wash-out type toilet according to an embodiment includes a bowl that receives waste and a drainage water trap. The drainage water trap includes an inlet that is connected to a lower part of the bowl, a rise pipeline that is connected to the inlet and extends upward toward its own top part, a fall pipeline that extends downward toward an inlet of a drainage water pipe that is arranged on a floor surface, and an intermediate pipeline with an upstream-side portion that is connected to the rise pipeline and a downstream-side portion that is connected to the fall pipeline. Furthermore, the intermediate pipeline includes a retention surface that is formed to slope downward from an upstream side to a downstream side and temporarily retains waste at a time of toilet washing.
    Type: Application
    Filed: January 9, 2018
    Publication date: July 12, 2018
    Inventors: Hiroshi Hashimoto, Shinichi Urata, Shuichi Nagashima, Mayu Okubo, Shoko Imaizumi, Daisuke Yamamoto, Kenichi Nakamura, Takumi Tsuchitani
  • Publication number: 20180080208
    Abstract: The present invention is a flush toilet (1) including: a bowl portion (8) having a bowl-shaped waste receiving surface (16), a rim portion (18), and a well portion (20) formed at the bottom of the waste receiving surface; a discharge trap pipe (12) connected to the bottom portion of the well portion; a flush water guide portion (40b) disposed on the waste receiving surface at the rear of the well portion so that flush water is directed toward the side wall surface inside the well portion; and a liquid membrane spouting portion (24) disposed on the rim portion, wherein this liquid membrane spouting portion induces a vertical circulating flow in the well portion, produced when discharged flush water assumes a liquid membrane form and collides with a flush water guide portion, and the colliding flush water drops along the side wall surface of the well portion.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 22, 2018
    Applicant: TOTO LTD.
    Inventors: Hiroshi HASHIMOTO, Shinichi URATA, Shuichi NAGASHIMA, Mayu OKUBO, Shoko IMAIZUMI, Daisuke YAMAMOTO, Kenichi NAKAMURA, Takumi TSUCHITANI
  • Publication number: 20170350108
    Abstract: A flush toilet includes a reservoir tank assembled from above or behind to a predetermined installation position on the rear side of the conduit of a toilet main unit; a connecting pipe member, one end of which is disposed on the conduit of the toilet main unit, and the other end of which is connected to a reservoir tank; a tank-side connecting portion, disposed on the front side of the reservoir tank and connected to a connecting pipe member; and a seal member, connected in a watertight manner between a connecting pipe member and a tank-side connecting portion.
    Type: Application
    Filed: May 26, 2017
    Publication date: December 7, 2017
    Inventors: Tatsunari HARASHIMA, Ryoko ISHIMARU, Kenichi NAKAMURA, Shoko IMAIZUMI
  • Publication number: 20170350110
    Abstract: A flush toilet includes a toilet main unit, a reservoir tank, and a connecting pipe member configured to connect the toilet main unit and the reservoir tank in a watertight manner after the connecting pipe member is inserted into the reservoir tank so that the reservoir tank is assembled to a predetermined installation position. The connecting pipe member includes a communicating pipe portion configured to communicate between the conduit of the toilet main unit and an interior of the tank when one end of the connecting member is inserted from the interior of the tank through the outlet of the tank into the inlet of the conduit of the toilet main unit. A horizontal adjustment portion configured to adjust the orientation of the reservoir tank to a horizontal state is provided on the toilet main unit or on the reservoir tank.
    Type: Application
    Filed: May 25, 2017
    Publication date: December 7, 2017
    Inventors: Tatsunari HARASHIMA, Ryoko ISHIMARU, Kenichi NAKAMURA, Shoko IMAIZUMI
  • Patent number: 8634553
    Abstract: A master key (K2,2) inputted by an input unit is stored in a storage unit. A matrix generating unit generates key element matrices (M1-M3) with respect to each of split keys (eR2, eR1, eR3) obtained by a key dividing unit dividing the master key (K2,2). To each coordinate entry of the key element matrices (M1-M3), operation data that successively obtained by repeating a hash operation with a one-way hash function is assigned, so as to maintain hierarchical nature of scalability (L). A key generating unit generates partial keys (K1,1-K2,2) corresponding to respective hierarchies of the scalabilities (R, L), on the basis of the key element matrices (M1-M3). These partial keys (K1,1-K2,2) are outputted to a coding unit or a decoding unit by an output unit.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: January 21, 2014
    Assignees: Sumitomo Electric Industries, Ltd., Tokyo Metropolitan University
    Inventors: Yoichi Hata, Toshiaki Kakii, Yasuhito Fujita, Yoshimitsu Goto, Hitoshi Kiya, Kiyoshi Nishikawa, Masaaki Fujiyoshi, Shoko Imaizumi
  • Publication number: 20120121088
    Abstract: A master key (K2,2) inputted by an input unit is stored in a storage unit. A matrix generating unit generates key element matrices (M1-M3) with respect to each of split keys (eR2, eR1, eR3) obtained by a key dividing unit dividing the master key (K2,2). To each coordinate entry of the key element matrices (M1-M3), operation data that successively obtained by repeating a hash operation with a one-way hash function is assigned, so as to maintain hierarchical nature of scalability (L). A key generating unit generates partial keys (K1,1-K2,2) corresponding to respective hierarchies of the scalabilities (R, L), on the basis of the key element matrices (M1-M3). These partial keys (K1,1-K2,2) are outputted to a coding unit or a decoding unit by an output unit.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 17, 2012
    Inventors: Yoichi HATA, Toshiaki Kakii, Yasuhito Fujita, Yoshimitsu Goto, Hitoshi Kiya, Kiyoshi Nishikawa, Masaaki Fujiyoshi, Shoko Imaizumi
  • Publication number: 20100020966
    Abstract: The present invention relates to an encryption key generating method ensuring resistance to collusion attacks and achieving reduction in a key length of encryption keys corresponding to respective hierarchies of each scalability. In the encryption key generating method, an encryption key (K2,2) corresponding to data in the lowest hierarchies of hierarchical scalabilities (R, L) is divided as a master key by the number of hierarchies in scalability (R). Key element matrices (M1-M3) generated with respective split keys (eR2, eR1, eR3) are assigned operation data successively obtained by repeating a hash operation with a one-way hash function, so as to maintain hierarchical nature of scalability (L). Partial keys (K1,1-K2,2) corresponding to respective hierarchies of the scalabilities (R, L) are generated by combining key elements coordinately consistent among the key element matrices (M1-M3).
    Type: Application
    Filed: November 4, 2008
    Publication date: January 28, 2010
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOKYO METROPOLITAN UNIVERSITY
    Inventors: Yoichi Hata, Toshiaki Kakii, Yasuhito Fujita, Yoshimitsu Goto, Hitoshi Kiya, Kiyoshi Nishikawa, Masaaki Fujiyoshi, Shoko Imaizumi