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: 11463604
    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: June 30, 2020
    Date of Patent: October 4, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Atsushi Sakagami, Naoto Sakurai, Koji Sasaki, Daiya Miyasaka, Tomoko Nishizawa, Yasuhiko Tsugawa, Yohei Ono
  • Publication number: 20220179198
    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: Application
    Filed: February 25, 2022
    Publication date: June 9, 2022
    Applicant: Hamamatsu Photonics K.K.
    Inventor: Naoto SAKURAI
  • Patent number: 11294169
    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: July 23, 2018
    Date of Patent: April 5, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventor: Naoto Sakurai
  • Publication number: 20220098058
    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: Application
    Filed: August 13, 2021
    Publication date: March 31, 2022
    Applicant: Toshiba Lighting & Technology Corporation
    Inventors: Takeo Kato, Atsushi Fujioka, Naoto Sakurai, Seiya Iida, Takanori Ochi
  • Patent number: 11169371
    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 as a central line and a second drive signal for swinging the mirror with respect to the second axial line as a central line. In a lighting-on period in which a light source emits laser light in one swing of the mirror with respect to the second axial line as a central line, the control unit generates the first drive signal and the second drive signal by repeating a process of generating N pieces (N is an integer of two or greater) of second signal elements which respectively constitute the second drive signal with respect to a first signal element in a ½ cycle period in the first drive signal.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: November 9, 2021
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Naoto Sakurai, Makoto Nozaki
  • Publication number: 20210322593
    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: Application
    Filed: February 11, 2021
    Publication date: October 21, 2021
    Applicant: Toshiba Lighting & Technology Corporation
    Inventors: Takeo Kato, Atsushi Fujioka, Naoto Sakurai, Seiya Iida, Takanori Ochi, Yukinobu Nakagawa
  • Publication number: 20210296955
    Abstract: An electric work machine (1; 301), such as a power tool, includes a motor (8; 8B) having a rotor (19), which is rotatable relative to a stator (20; 20B). The stator includes: a stator core (32; 120) having teeth (37; 130); an insulator (33, 34; 122) supported by the stator core; coils (35, 112) wound through the insulator and around the teeth; a first wire (101; 149) that connects a first set of the coils; and a second wire (102; 149) that connects a second set of the coils. At least a portion of the first wire and at least a portion of the second wire are disposed in a same range in a circumferential direction of the stator. In at least a portion of that range, the first wire and the second wire are non-contactable and/or incapable of relative movement, whereby premature wire deterioration can be reduced.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 23, 2021
    Inventors: Takaya YAMADA, Keisuke HANE, Naoto SAKURAI, Tatsuya MAEDA
  • Publication number: 20210283294
    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: Application
    Filed: February 3, 2021
    Publication date: September 16, 2021
    Applicant: Toshiba Lighting & Technology Corporation
    Inventors: Seiya Iida, Takeo Kato, Naoto Sakurai
  • Patent number: 11064090
    Abstract: A management apparatus connected to an image forming apparatus for managing usage of the image forming apparatus is disclosed. The management apparatus includes a user data storage part for storing user identification data and use restriction data corresponding to the user identification data, and a use restriction data acquiring part for acquiring the use restriction data corresponding to the user identification data.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: July 13, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Sakagami, Naoto Sakurai, Daiya Miyasaka, Koji Sasaki, Tomoko Nishizawa
  • Publication number: 20210157127
    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 as a central line and a second drive signal for swinging the mirror with respect to the second axial line as a central line. In a lighting-on period in which a light source emits laser light in one swing of the mirror with respect to the second axial line as a central line, the control unit generates the first drive signal and the second drive signal by repeating a process of generating N pieces (N is an integer of two or greater) of second signal elements which respectively constitute the second drive signal with respect to a first signal element in a ½ cycle period in the first drive signal.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 27, 2021
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Naoto SAKURAI, Makoto NOZAKI
  • Publication number: 20210087077
    Abstract: A fluid sterilizer of an embodiment includes a processing chamber, a light source unit, and a supply flow path. The processing chamber processes a fluid. The light source unit has a light source, a cooling block, and a medium flow path. The light source irradiates the processing chamber with ultraviolet rays. The cooling block cools the light source. The medium flow path is provided inside the cooling block, and a cooling medium flows therein. The supply flow path connects the medium flow path and the processing chamber to each other, and supplies the cooling medium flowing through the medium flow path to the processing chamber as the fluid.
    Type: Application
    Filed: September 8, 2020
    Publication date: March 25, 2021
    Applicant: Toshiba Lighting & Technology Corporation
    Inventors: Naoto Sakurai, Takeo Kato
  • Publication number: 20210053037
    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: Application
    Filed: September 18, 2020
    Publication date: February 25, 2021
    Applicant: DIC Corporation
    Inventors: Masato Otsu, Jian-Jun Yuan, Minoru Tabuchi, Kaori Kawamura, Naoto Sakurai, Koichiro Matsuki, Yuichi Satokawa
  • Patent number: 10928716
    Abstract: A projection display device includes: a light source that emits a first laser light for displaying a projection and a second laser light for inspection; a scanning drive mirror that reflects the first laser light and the second laser light emitted from the light source, and uses the first laser light and the second laser light in scanning; a light diffusion unit that allows the first laser light used in the scanning by the scanning drive mirror to be transmitted through the light diffusion unit and diffuses the first laser light; a light selection unit that allows the first laser light to be transmitted through the light selection unit and reflects the second laser light at a position on an emission surface of the light diffusion unit; and a light detection unit that detects the second laser light reflected by the light selection unit.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: February 23, 2021
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Naoto Sakurai, Akihiro Oguri
  • Publication number: 20210030895
    Abstract: The invention contains a resin and a near infrared fluorescent material which is one type or two or more types of compounds selected from General Formulas (I1) to (I4) and has a maximum fluorescence wavelength of 650 nm or longer. In Formulas, Ra and Rb, Rc and Rd, Rh and Ri, and Rj and Rk form rings together with the nitrogen atom to which Ra, Rc, Rh, and Rj are bonded; Re and Rf represent a halogen atom or an oxygen atom; each of Rl, Rm, Rn, and Ro independently represents a halogen atom, a C1-20 alkyl group, a C1-20 alkoxy group, an aryl group, or a heteroaryl group; Rg, Rr, and Rs represent a hydrogen atom or an electron withdrawing group; and each of Rp and Rq independently represents a hydrogen atom, a halogen atom, a C1-20 alkyl group, a C1-20 alkoxy group, an aryl group, or a heteroaryl group.
    Type: Application
    Filed: October 13, 2020
    Publication date: February 4, 2021
    Applicants: DIC Corporation, NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITY
    Inventors: Naoto Sakurai, Takeo Ikeda, Yoshinobu Sakurai, Yasuyuki Watanabe, Takayuki Sato
  • Publication number: 20210032095
    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: Application
    Filed: November 26, 2018
    Publication date: February 4, 2021
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki SUZUKI, Takuma OSAKI, Naoto SAKURAI
  • Publication number: 20210024821
    Abstract: An object of the present invention is to provide a resin composition which can be detected both by X-ray radiation and by fluorescence or phosphorescence, and a molded article obtained from the resin composition. The present invention provides a resin composition containing a light-emitting substance and a radiopaque substance; in which the light-emitting substance is a near-infrared fluorescent material or a phosphorescent material. a radiopaque substance of the resin composition is any one of barium sulfate, bismuth oxide, bismuth subcarbonate, calcium carbonate, aluminum hydroxide, tungsten, zinc oxide, zirconium oxide, zirconium, titanium, platinum, bismuth subnitrate, and bismuth. A molded article can be obtained by processing any one of the resin compositions described above.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 28, 2021
    Applicants: DIC Corporation, NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITY
    Inventors: Naoto Sakurai, Yoshinobu Sakurai, Yasuyuki Watanabe, Takeo Ikeda, Takayuki Sato
  • Patent number: 10827095
    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: July 10, 2018
    Date of Patent: November 3, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Atsushi Sakagami, Naoto Sakurai, Koji Sasaki, Daiya Miyasaka, Tomoko Nishizawa, Yasuhiko Tsugawa, Yohei Ono
  • Publication number: 20200336621
    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: June 30, 2020
    Publication date: October 22, 2020
    Inventors: Atsushi Sakagami, Naoto Sakurai, Koji Sasaki, Daiya Miyasaka, Tomoko Nishizawa, Yasuhiko Tsugawa, Yohei Ono
  • Patent number: 10742841
    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: July 10, 2018
    Date of Patent: August 11, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Atsushi Sakagami, Naoto Sakurai, Koji Sasaki, Daiya Miyasaka, Tomoko Nishizawa, Yasuhiko Tsugawa, Yohei Ono
  • Publication number: 20200159008
    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: Application
    Filed: July 23, 2018
    Publication date: May 21, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventor: Naoto SAKURAI