Patents Assigned to Toto Ltd.
  • Publication number: 20250243654
    Abstract: The present invention provides a siphon jet flush toilet, in which flush water is discharged from a rim spout port and a jet spout port at different timings, including a bowl including a waste receiving surface, a rim, a shelf surface, and a basin; a rim spout port provided in the rim, and spouting flush water along an inner peripheral surface of the rim; and a jet spout port provided in a bottom portion of the bowl, and spouting flush water toward an inlet of a discharge trap conduit, and the flush toilet is formed so that a curvature radius of a front end of the basin is smaller than a curvature radius of the inner peripheral surface of the rim in a front end of the bowl in planar view.
    Type: Application
    Filed: January 24, 2025
    Publication date: July 31, 2025
    Applicant: TOTO LTD.
    Inventors: Hiroshi HASHIMOTO, Shinichi URATA, Shun TANIMORI, Takumi TSUCHITANI, Daisuke YAMAMOTO, Kenichi NAKAMURA, Naoki ABE
  • Patent number: 12374574
    Abstract: An electrostatic chuck includes a ceramic dielectric substrate, a base plate, and a heater unit. The heater unit includes a first power feeding portion, a second power feeding portion, and a heater line. The heater line includes a plurality of extension portions arranged in a second direction. The plurality of extension portions includes a first extension portion and a second extension portion. A third distance between the first extension portion and a first virtual tangent and a fourth distance between the second extension portion and a second virtual tangent each are not more than a first distance between the first power feeding portion and the second power feeding portion. The third distance and the fourth distance each are not more than a second distance between the plurality of extension portions.
    Type: Grant
    Filed: March 8, 2023
    Date of Patent: July 29, 2025
    Assignee: Toto Ltd.
    Inventors: Akihito Ono, Jumpei Uefuji, Tatsuya Hayakawa
  • Patent number: 12361234
    Abstract: A toilet device includes a wireless communication part and a controller. The wireless communication part is configured to communicate with a personal digital assistant. The controller is configured to control the wireless communication part. The wireless communication part includes a first identification information that is unique and a second identification information that is modifiable. The controller stores the second identification information when it receives a write signal of the second identification information transmitted from the personal digital assistant.
    Type: Grant
    Filed: March 6, 2024
    Date of Patent: July 15, 2025
    Assignee: TOTO LTD.
    Inventors: Shimpei Araki, Sachiko Niwano
  • Patent number: 12352028
    Abstract: Provided is a flush toilet apparatus having a flush toilet main body that includes a bowl, a water discharge trap pipe, an upper water discharge port, a lower water discharge port, and a flush control device configured to execute both a large flush mode and a small flush mode. When in operation, the flush control device causes flush water to be discharged from the lower water discharge port with substantially the same amount in each of the large flush mode and the small flush mode to induce a siphon phenomenon in the water discharge trap pipe. The device also controls water discharge from the upper water discharge port so that a water level of pooled water in the bowl during the water discharge from the lower water discharge port is changed between the large flush mode and the small flush mode.
    Type: Grant
    Filed: March 15, 2023
    Date of Patent: July 8, 2025
    Assignee: TOTO LTD.
    Inventors: Takumi Tsuchitani, Kenichi Nakamura, Hiroshi Hashimoto, Shinichi Urata, Chisato Sone, Koichiro Matsumura
  • Patent number: 12341049
    Abstract: An electrostatic chuck includes a ceramic dielectric substrate, a base plate, and a heater unit. The heater unit includes first and second heater elements. The first heater element includes a first zone. The first heater element includes first and second protruding portions. The first zone includes a first facing region in which the first protruding portion and the second protruding portion are disposed so as to face and be adjacent to each other. The second heater element includes a second zone. The second zone includes a central region and an outer peripheral region. The central region is positioned at a center of the second zone. The outer peripheral region is positioned outside the central region. The first facing region is located at a position where the first facing region overlaps the central region.
    Type: Grant
    Filed: March 14, 2023
    Date of Patent: June 24, 2025
    Assignee: Toto Ltd.
    Inventors: Akihito Ono, Jumpei Uefuji
  • Patent number: 12341050
    Abstract: An electrostatic chuck includes a base plate, a first heater element, and a plurality of first power feeding terminals. The base plate includes a communicating path having a spiral shape. The first heater element includes a plurality of first zones. The plurality of first power feeding terminals feeds power to the plurality of first zones. Each of the plurality of first zones includes a first heater line and a pair of first power feeding portions feeding power to the first heater line. The pair of first power feeding portions is electrically connected to the plurality of first power feeding terminals. The plurality of first power feeding terminals includes a first and a second annular portion. The communicating path includes a first circumferential portion surrounding the second annular portion between the first annular portion and the second annular portion when viewed along a stacking direction.
    Type: Grant
    Filed: March 15, 2023
    Date of Patent: June 24, 2025
    Assignee: Toto Ltd.
    Inventors: Akihito Ono, Tetsuro Itoyama, Tomoki Umetsu, Jumpei Uefuji
  • Patent number: 12329333
    Abstract: A toilet device includes a casing, a lock part, and a release part. The casing is mounted to an upper surface of a toilet. The lock part restricts movement of the casing with respect to the toilet. The release part releases the restriction by the lock part. The release part includes an operation part and a transmission part. The transmission part transmits the operating force applied to the operation part to the lock part. The operation part is located at a position separated upward or downward from a lower end of the casing.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: June 17, 2025
    Assignee: TOTO LTD.
    Inventors: Masahiko Watanabe, Katsushi Maeta, Fumiya Midori, Yoshitaka Imamura, Jun Kawamata
  • Publication number: 20250119079
    Abstract: An electrostatic chuck (10) includes a dielectric substrate (100), a base plate (200) formed of a metal material, and a bonding layer (300) bonding the dielectric substrate (100) and the base plate (200). At least a portion of the base plate (200) facing the bonding layer (300) is covered with a ceramic film (231), and a surface of the ceramic film (231) is a bonded surface (S). The bonded surface (S) satisfies at least one of a first condition: arithmetic average height (Sa)?1.5 ?m or a second condition: root mean square height (Sq)?2.0 ?m, and at least one of a third condition: maximum valley depth (Sv)?20.0 ?m or a fourth condition: maximum height (Sz)?20.0 ?m.
    Type: Application
    Filed: September 20, 2024
    Publication date: April 10, 2025
    Applicant: TOTO LTD.
    Inventors: Kouta KOBAYASHI, Masafumi IKEGUCHI, Yutaka MOMIYAMA
  • Publication number: 20250119080
    Abstract: An electrostatic chuck 10 includes a dielectric substrate 100 in which through-holes 140 are formed, a base plate 200 formed of a metal material, and a bonding layer 300 that bonds the dielectric substrate 100 and the base plate 200. When a Young's modulus of the bonding layer 300 is E (MPa), and a distance between a central axis AX0 of the dielectric substrate 100 and a central axis AX1 of each of the through-holes 140 is X (mm), with respect to the through-holes 140 at a position farthest from the central axis AX0, E?0.2063×X2?59.3887×X+4278.8065 is established.
    Type: Application
    Filed: September 25, 2024
    Publication date: April 10, 2025
    Applicant: TOTO LTD.
    Inventors: Masafumi IKEGUCHI, Kouta KOBAYASHI, Yutaka MOMIYAMA
  • Patent number: 12270188
    Abstract: A flush toilet includes a bowl including a waste receiving surface, a rim and a well portion; a water spouting part that spouts flush water toward the bowl; and a water discharge trap including an inlet connected to a lower part of the well portion, the water discharge trap discharging waste in the bowl, the well portion includes a bottom wall formed above and in front of the inlet of the water discharge trap, a side wall formed to surround a periphery of the bottom wall, and a joining portion that joins an outer edge of the bottom wall and a bottom edge of the side wall with a surface having a curvature, and the bottom wall of the well portion includes a concave portion formed to recess downward on left and right sides with respect to a center axis in a left-right direction in a front sectional view.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: April 8, 2025
    Assignee: TOTO LTD.
    Inventors: Hiroshi Hashimoto, Kenichi Nakamura, Shinichi Urata, Kazunari Yasui, Isami Sakaba, Yuichi Tsubone, Shigeru Okada, Satoshi Yamazaki
  • Publication number: 20250109581
    Abstract: A flush toilet comprises a bowl including a waste receiving surface and a rim, a discharge trap conduit, a spouting portion provided in the bowl to spout the flush water, a flush water supply device configured to supply the flush water to the spouting portion, a waste information acquisition device configured to acquire an information regarding the waste excreted in the bowl, and a controller configured to determine a waste state by using the information regarding the waste and control the flush water supply device based on determination of the waste state.
    Type: Application
    Filed: September 3, 2024
    Publication date: April 3, 2025
    Applicant: TOTO LTD.
    Inventors: Shu KASHIRAJIMA, Makoto BEKKI
  • Publication number: 20250105045
    Abstract: An electrostatic chuck (10) includes a dielectric substrate (100) and a heater unit (300) configured to heat the dielectric substrate (100). The heater unit (300) includes a power supply portion (390) configured to receive a supply of power from an external source, a heat generation portion (331) that is a conductor drawn in a linear shape and configured to receive the supply of power from the power supply portion (390) and generate heat, and a bypass layer (370) connecting the power supply portion (390) and the heat generation portion (331). The heat generation portion (331) includes a widened portion (332) that is a section in which a line width of the heat generation portion (331) is locally widened. The bypass layer (370) is connected to the heat generation portion (331) at a plurality of locations in the widened portion (332).
    Type: Application
    Filed: September 12, 2024
    Publication date: March 27, 2025
    Applicant: TOTO LTD.
    Inventors: Tetsuro ITOYAMA, Jumpei UEFUJI, Tomoki UMETSU
  • Patent number: 12260950
    Abstract: A nutrient intake amount estimation system according to an embodiment includes: a sensor that is disposed in a toilet space, and configured to detect an excretion smell related to excretion of a user of the toilet space; an estimation unit configured to estimate an estimated nutrient intake amount that is an amount of nutrients taken by the user by using an output of an estimation model that outputs information indicating an amount of nutrients estimated to be taken by the user in accordance with an input based on an output value of the sensor; and an output unit configured to output information based on the estimated nutrient intake amount.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: March 25, 2025
    Assignee: TOTO LTD.
    Inventors: Kenta Suzuki, Mizuki Watanabe, Isao Okayama, Yusuke Sato, Ryoji Nakamura
  • Patent number: 12258744
    Abstract: The present invention is a flush water tank device including a flush water tank main body, a water supply valve, and a discharge valve, in which during a flush of the flush toilet, the discharge valve is opened until a water level in the flush water tank main body is lowered from a predetermined full water level to a predetermined dead water level, a lowering speed of the water level in the flush water tank main body changes at a predetermined inflection water level between the full water level and the dead water level, and the lowering speed of the water level between the inflection water level and the dead water level is faster than the lowering speed of the water level between the full water level and the inflection water level.
    Type: Grant
    Filed: March 15, 2023
    Date of Patent: March 25, 2025
    Assignee: TOTO LTD.
    Inventors: Yuta Kondo, Koichiro Hiwa, Yuki Shimokawa, Kenji Hatama, Haruki Matsuda
  • Publication number: 20250082310
    Abstract: A plurality of color sensing sections are attached to a toilet seat so as to test a health state or a fecal occult blood portion every time by capturing the feces surface color during defecation. Before feces which have been excreted from a body sink into a water-seal portion, the circumference of the feces is optically captured to detect the color of the surface of the feces. By monitoring changes in color, the health state of the defecator is monitored. In particular, by checking the presence/absence of an occult blood portion, the present invention assists in early detection of colorectal cancer and allows a fecal occult blood test to be performed in a hygienic manner without burdening the user.
    Type: Application
    Filed: November 21, 2024
    Publication date: March 13, 2025
    Applicants: SETECH CO., LTD., TOTO LTD.
    Inventor: Hirokazu SEKINE
  • Publication number: 20250074837
    Abstract: A structural member 10 includes a base material 100 and a protective film 200 covering a surface 101 of the base material 100. The protective film 200 has been subjected to reduction processing of reducing an in-plane variation in residual stress on a surface 201 of the protective film 200.
    Type: Application
    Filed: August 28, 2024
    Publication date: March 6, 2025
    Applicant: TOTO LTD.
    Inventors: Tatsuya KOGA, Nobutomo OTSUKA
  • Publication number: 20250079130
    Abstract: A structural member 10 includes a base material 100 and a protective film 200 covering a surface 110 of the base material 100. A particle 300 that is harder than the protective film 200 is dispersedly arranged inside the protective film 200.
    Type: Application
    Filed: August 27, 2024
    Publication date: March 6, 2025
    Applicant: TOTO LTD.
    Inventors: Ryunosuke NAKAGAWA, Tatsuya KOGA
  • Patent number: D1067394
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: March 18, 2025
    Assignee: TOTO Ltd.
    Inventors: Kazuki Otsuka, Masanobu Wano, Hiroshi Shimoda, Hirotaka Nakabayashi
  • Patent number: D1088198
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: August 12, 2025
    Assignee: TOTO Ltd.
    Inventors: Mai Yato, Hiroshi Shimoda, Shunichi Fukuchi, Takahiro Ago
  • Patent number: D1088199
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: August 12, 2025
    Assignee: TOTO Ltd.
    Inventors: Mai Yato, Hiroshi Shimoda, Shunichi Fukuchi, Takahiro Ago