Patents by Inventor Naoto Sakurai

Naoto Sakurai 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: 11971569
    Abstract: There is provided a light emitting device that can be used as a light guide plate and has an excellent antireflection function to extraneous light, and an optical body includes: a base material; a macro concave-convex structure that is formed on one surface of the base material and emits internally propagating light that is injected in an inside of the base material from a side surface of the base material, from another surface of the base material; and a micro concave-convex structure formed periodically to follow each of both surfaces of the base material and a surface of the macro concave-convex structure, and having an average period of concavity and convexity of less than or equal to a wavelength of visible light. The surface of the macro concave-convex structure has an inclined surface, and an arrangement of the micro concave-convex structure is a zigzag arrangement.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: April 30, 2024
    Assignee: DEXERIALS CORPORATION
    Inventors: Shunichi Kajiya, Kyoko Sakurai, Katsuhiro Doi, Kazuya Hayashibe, Naoki Hanashima, Naoto Kaneko
  • Patent number: 11957802
    Abstract: A fluid sterilization apparatus according to an embodiment includes a tubular cover; a tubular portion provided inside the cover; a supply head provided at one end of the tubular portion; a discharge head provided at the other end of the tubular portion; at least one light-emitting element provided in at least one of the supply head and the discharge head and allowed to irradiate an inside of the tubular portion with ultraviolet rays; and a temperature control unit capable of controlling a temperature of a space between the cover and the tubular portion.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: April 16, 2024
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Takeo Kato, Atsushi Fujioka, Naoto Sakurai, Seiya Iida, Takanori Ochi, Yukinobu Nakagawa
  • Patent number: 11939211
    Abstract: An actuator device includes a support part, a first movable part, and a second movable part. The second movable part includes a pair of first connection portions positioned on both sides of the first movable part on a first axis and connected to a pair of first connecting parts, a pair of second connection portions positioned on both sides of the first movable part on a second axis and connected to a pair of second connecting parts, and a pair of first portions. One of the first portions is connected to one of the first connection portions and one of the second connection portions and extends in a inclined direction, and the other of the first portions is connected to the other of the first connection portions and the one of the second connection portions and extends in a inclined direction.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: March 26, 2024
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki Suzuki, Takuma Osaki, Naoto Sakurai
  • Publication number: 20240098209
    Abstract: A disclosed managing apparatus and image forming apparatus management system ensure confidentiality of information in an image forming apparatus while usability is maintained. An image forming apparatus acquires IC card identifying information with an IC card reader. A management server acquires a user ID associated with the acquired IC card identifying information and use limit information concerning use of the image forming apparatus. A process is performed in the image forming apparatus in accordance with the use limit information.
    Type: Application
    Filed: October 30, 2023
    Publication date: March 21, 2024
    Applicant: Ricoh Company, Ltd.
    Inventors: Atsushi SAKAGAMI, Naoto SAKURAI, Koji SASAKI, Daiya MIYASAKA, Tomoko NISHIZAWA, Yasuhiko TSUGAWA, Yohei ONO
  • Patent number: 11927451
    Abstract: Provided is a route search device and a non-transitory computer-readable medium that can search a route where a transportation means more suitable for a user is selected. When searching a route to a destination, a change point at which the transportation means is changed is set, and then the priority in selecting a transportation means for moving in a section from a plurality kinds of transportation means is set based on at least one of an attribute of a start point and an attribute of an end point in the section for each section where a distance between a departure place and a destination is divided at the change point to search the route to the destination using the transportation means selected for each of the plurality of sections based on the set priority.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: March 12, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Motohiro Nakamura, Yoko Sakurai, Norihiro Nakamura, Hidefumi Okabe, Naoto Miura, Koichi Iwatsuki
  • Publication number: 20240034927
    Abstract: The present invention provides a resin composition which emits near-infrared fluorescence, has high light-emitting efficiency, and can be relatively easily produced, and a molded object obtained from the resin composition. More specifically, the present invention provides a resin composition containing a near-infrared fluorescent material (A), a thermoplastic resin (B) other than a polyamide resin, and a resin (C) different from the thermoplastic resin (B), in which the resin (C) forms a continuous phase, and a dispersed phase containing the near-infrared fluorescent material (A) and the thermoplastic resin (B) is formed in the continuous phase.
    Type: Application
    Filed: September 9, 2021
    Publication date: February 1, 2024
    Applicant: DIC Corporation
    Inventors: Yutaka Takezawa, Naoto Sakurai, Kyouichi Toyomura
  • Patent number: 11849093
    Abstract: A disclosed managing apparatus and image forming apparatus management system ensure confidentiality of information in an image forming apparatus while usability is maintained. An image forming apparatus acquires IC card identifying information with an IC card reader. A management server acquires a user ID associated with the acquired IC card identifying information and use limit information concerning use of the image forming apparatus. A process is performed in the image forming apparatus in accordance with the use limit information.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: December 19, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Atsushi Sakagami, Naoto Sakurai, Koji Sasaki, Daiya Miyasaka, Tomoko Nishizawa, Yasuhiko Tsugawa, Yohei Ono
  • Patent number: 11780750
    Abstract: A fluid sterilization device according to an embodiment includes: a tube portion; a supply head in one end portion of the tube portion; a discharge head provided in the other end portion thereof and having a first hole penetrating a space between end faces on the tube portion side and the opposite side; a holder having a flange and a protruding portion projecting from one surface of the flange and provided in the first hole; a substrate on an end face of the protruding portion on a side opposite to the flange side; a light-emitting element provided on a surface of the substrate on a side opposite to the protruding portion side and emitting ultraviolet rays; a window provided in the first hole and facing the light-emitting element; and a desiccant provided outside the discharge head and in a space communicating with the first hole or in the first hole.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: October 10, 2023
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Takeo Kato, Atsushi Fujioka, Naoto Sakurai, Seiya Iida, Takanori Ochi
  • Publication number: 20230264947
    Abstract: An actuator device includes a support part, a first movable part, and a second movable part. The second movable part includes a pair of first connection portions positioned on both sides of the first movable part on a first axis and connected to a pair of first connecting parts, a pair of second connection portions positioned on both sides of the first movable part on a second axis and connected to a pair of second connecting parts, and a pair of first portions. One of the first portions is connected to one of the first connection portions and one of the second connection portions and extends in a inclined direction, and the other of the first portions is connected to the other of the first connection portions and the one of the second connection portions and extends in a inclined direction.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 24, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki SUZUKI, Takuma Osaki, Naoto Sakurai
  • Publication number: 20230220321
    Abstract: The object is achieved by an organic-inorganic composite dispersion liquid comprising organic-inorganic composite particles (X) which are formed of a polymer (P) of a monomer including a (meth)acrylamide-based monomer (a) and one or more inorganic materials (B) selected from a water-swellable clay mineral or silica in a three-dimensional network and are dispersed in an aqueous medium (C), in which an average particle diameter of the organic-inorganic composite particles (X) is 100 nm or more.
    Type: Application
    Filed: March 3, 2023
    Publication date: July 13, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Naoto SAKURAI, Hirohide Nakaguma, Tetsuo Takada
  • Patent number: 11673794
    Abstract: An actuator device includes a support part, a first movable part, and a second movable part. The second movable part includes a pair of first connection portions positioned on both sides of the first movable part on a first axis and connected to a pair of first connecting parts, and a pair of second connection portions positioned on both sides of the first movable part on a second axis and connected to a pair of second connecting parts. An outer edge of each of the pair of the first connection portions includes a first linear portion that extends along a second axis direction. An outer edge of each of the pair of the second connection portions includes a second linear portion that extends along a first axis direction.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: June 13, 2023
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki Suzuki, Takuma Osaki, Naoto Sakurai
  • Patent number: 11642663
    Abstract: Provided is a molybdenum sulfide that is ribbon-shaped and particularly suitable for a hydrogen generation catalyst. Disclosed are a ribbon-shaped molybdenum sulfide, in which 50 particles as measured by observation with a scanning electron microscope (SEM) have a shape of, on average, 500 to 10000 nm in length, 10 to 1000 nm in width, and 3 to 200 nm in thickness; a method for producing the ribbon-shaped molybdenum sulfide, including: (1) heating a molybdenum oxide at a temperature of 200 to 1000° C. in the presence of a sulfur source; or (2) heating a molybdenum oxide at a temperature of 100 to 800° C. in the absence of a sulfur source, and then heating the molybdenum oxide at a temperature of 200 to 1000° C. in the presence of a sulfur source; and a hydrogen generation catalyst including the ribbon-shaped molybdenum sulfide.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: May 9, 2023
    Assignee: DIC Corporation
    Inventors: Masato Otsu, Jian-Jun Yuan, Minoru Tabuchi, Kaori Kawamura, Naoto Sakurai, Koichiro Matsuki, Yuichi Satokawa
  • Patent number: 11644666
    Abstract: A scanning device includes an MEMS mirror mechanism that swings a mirror with respect to a first axial line as a central line and swings the mirror with respect to a second axial line as a central line, and a control unit that generates a first drive signal for swinging the mirror with respect to the first axial line, and a second drive signal for swinging the mirror with respect to the second axial line. The control unit generates the first drive signal and the second drive signal so that m times of reciprocation of an irradiation region in a first direction and one time of reciprocation of the irradiation region in a second direction correspond to each other by repeating generation of a second signal element constituting the second drive signal to correspond to a first signal element in a period equal to or less than one cycle in the first drive signal.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: May 9, 2023
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventor: Naoto Sakurai
  • Publication number: 20230038491
    Abstract: A base, which has a main surface and a back surface on an opposite side from the main surface and is made of metal, an optical surface provided on the main surface, and a vibrating element provided on the main surface or the back surface are included, in which the base has a support portion, a first extending portion and a second extending portion extending from the support portion, a movable portion disposed between the first extending portion and the second extending portion, and a first connecting portion connecting the first extending portion and the movable portion to each other, and a second connecting portion connecting the second extending portion and the movable portion to each other.
    Type: Application
    Filed: October 1, 2020
    Publication date: February 9, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki SUZUKI, Katsumi SHIBAYAMA, Takafumi YOKINO, Yuki MORINAGA, Takuma OSAKI, Naoto SAKURAI
  • Publication number: 20230013912
    Abstract: An actuator device includes a support part, a first movable part, and a second movable part. The second movable part includes a pair of first connection portions positioned on both sides of the first movable part on a first axis and connected to a pair of first connecting parts, and a pair of second connection portions positioned on both sides of the first movable part on a second axis and connected to a pair of second connecting parts. An outer edge of each of the pair of the first connection portions includes a first linear portion that extends along a second axis direction. An outer edge of each of the pair of the second connection portions includes a second linear portion that extends along a first axis direction.
    Type: Application
    Filed: September 22, 2022
    Publication date: January 19, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki SUZUKI, Takuma OSAKI, Naoto SAKURAI
  • Publication number: 20220417389
    Abstract: A disclosed managing apparatus and image forming apparatus management system ensure confidentiality of information in an image forming apparatus while usability is maintained. An image forming apparatus acquires IC card identifying information with an IC card reader. A management server acquires a user ID associated with the acquired IC card identifying information and use limit information concerning use of the image forming apparatus. A process is performed in the image forming apparatus in accordance with the use limit information.
    Type: Application
    Filed: August 26, 2022
    Publication date: December 29, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Atsushi SAKAGAMI, Naoto SAKURAI, Koji SASAKI, Daiya MIYASAKA, Tomoko NISHIZAWA, Yasuhiko TSUGAWA, Yohei ONO
  • Patent number: 11499136
    Abstract: The present invention provides a cell culture substrate including a polymer having a lower critical solution temperature, the substrate including one or more inorganic materials selected from a water-swellable clay mineral and silica and further including an adhesive matrix in the substrate, in which the adhesive matrix is an extracellular matrix and/or an adhesive synthetic matrix. Furthermore, the invention is to provide a cell culture substrate in which the extracellular matrix is at least one selected from laminin, fibronectin, vitronectin, cadherin, and fragments thereof, and/or the adhesive synthetic matrix is poly[2-(methacryloyloxy)ethyl dimethyl-(3-sulfopropyl) ammonium hydroxide] or an oligopeptide-supporting polymer.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 15, 2022
    Assignee: DIC Corporation
    Inventors: Tetsuo Takada, Naoto Sakurai, Ayako Isshiki, Noriko Santou
  • Patent number: 11485629
    Abstract: An actuator device includes a support part, a first movable part, and a second movable part. The second movable part includes a pair of first connection portions positioned on both sides of the first movable part on a first axis and connected to a pair of first connecting parts, and a pair of second connection portions positioned on both sides of the first movable part on a second axis and connected to a pair of second connecting parts. Each of the second connection portions includes a portion having a width larger than a width of a portion of the second movable part other than the first and second connection portions. An inner edge of each of the second connection portions, includes a depression recessed in a second axis direction, and an outer edge of each of the pair of second connection portions, includes a protrusion protruding in the second axis direction.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: November 1, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki Suzuki, Takuma Osaki, Naoto Sakurai
  • Publication number: 20220342206
    Abstract: In an optical device, a mirror surface is provided in a movable portion. A support portion supports the movable portion through an elastic connection portion. A force generator generates force in the movable portion. A drive controller outputs a drive signal that operates the force generator. The movable portion has a resonance frequency higher than a frequency of the drive signal output from the drive controller in a state before the elastic connection portion is heated. The movable portion swings due to the elastic deformation of the elastic connection portion in response to the force of the force generator. A heat controller acquires a signal that indicates a swing state of the movable portion and performs, based on a phase of the acquired signal, feedback control of heating of the elastic connection portion by a heater.
    Type: Application
    Filed: September 9, 2020
    Publication date: October 27, 2022
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Shinya IWASHINA, Shigeyuki NAKAMURA, Naoto SAKURAI, Yuki MORINAGA, Daiki SUZUKI
  • Patent number: 11464881
    Abstract: A fluid sterilization apparatus according to an embodiment includes a tubular portion; a supply head provided at one end of the tubular portion; a discharge head provided at the other end of the tubular portion; a holder provided on the discharge head; a window provided on the discharge head and one surface of which is exposed to a flow path provided in the discharge head; a board provided on a surface of the holder on a side of the window; a light-emitting element provided on the board and allowed to irradiate the window with ultraviolet rays; and a heat insulating portion which is provided between the discharge head and the holder and has a lower thermal conductivity than a thermal conductivity of the holder.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: October 11, 2022
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Seiya Iida, Takeo Kato, Naoto Sakurai