Patents by Inventor Takeshi Ueyama

Takeshi Ueyama 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: 20240405501
    Abstract: A gas laser device includes a chamber configured to enclose a laser gas as including a pair of discharge electrodes having a longitudinal direction oriented along a predetermined direction and facing each other with a space therebetween; a plurality of capacitors arranged along the predetermined direction, each of the capacitors having one terminal electrically connected to one of the discharge electrodes and the other terminal electrically connected to the other of the discharge electrodes; and first and second magnetic switches each electrically connected to the one discharge electrode and the one terminal of each of the capacitors and electrically connected to each other in parallel. The second magnetic switch is arranged closer to a center of the one discharge electrode in the predetermined direction than the first magnetic switch, and a Vt product of the first magnetic switch is smaller than a Vt product of the second magnetic switch.
    Type: Application
    Filed: August 9, 2024
    Publication date: December 5, 2024
    Applicant: Gigaphoton Inc.
    Inventors: Youichi YAMANOUCHI, Hiroshi UMEDA, Takeshi UEYAMA
  • Publication number: 20240396284
    Abstract: A gas laser device includes a power source, a main capacitor, a solid-state switch, a step-up transformer, a first magnetic pulse compression circuit including a first transfer capacitor and a first magnetic switch, and connected to a secondary side of the step-up transformer, a second magnetic pulse compression circuit including a second transfer capacitor and a second magnetic switch, and connected subsequently to the first magnetic pulse compression circuit, a peaking capacitor connected subsequently to the second magnetic pulse compression circuit, a pair of discharge electrodes, a regenerative transformer transferring charges generated by the discharge electrodes to the main capacitor after main discharge, and a reset circuit resetting the first magnetic switch and the second magnetic switch. Potential of the cathode electrode in a period of 0.5 ?s to 20 ?s both inclusive after the main discharge starts is within a range of ?200 V to 200 V both inclusive.
    Type: Application
    Filed: August 7, 2024
    Publication date: November 28, 2024
    Applicant: Gigaphoton Inc.
    Inventors: Takeshi UEYAMA, Hiroshi UMEDA
  • Publication number: 20240317582
    Abstract: An ozone generating body (3) includes a first electrode (10), a first dielectric (11) that covers the first electrode (10), a second electrode (30), and a second dielectric (31) that covers the second electrode (30). The second dielectric (31) forms a discharge space (DS) between the second dielectric (31) and the first dielectric (11). The ozone generating body (3) further includes a support portion (50) that supports the first dielectric (11) and the second dielectric (31). Young's modulus of the support portion (50) is less than those of the first dielectric (11) and the second dielectric (31).
    Type: Application
    Filed: March 24, 2022
    Publication date: September 26, 2024
    Inventors: Yoichi HATTORI, Takeshi UEYAMA, Hiroyuki NISHIYAMA, Hideki HASUNUMA, Junya IMAIZUMI, Masayuki SEGAWA, Takayuki OHTANI, Takahiro YOKOYAMA
  • Publication number: 20240101420
    Abstract: An ozone generator (100) includes: a flow path (1) through which gas flows from an inlet (5) to an outlet (6); an ozone generation unit (3) disposed in the flow path (1); and an ozone sensor (4) disposed in the flow path (1) and upstream of the ozone generation unit (3). The flow path (1) has an upstream-side flow path (130) that forms a gas passing space (AR) located upstream of the ozone generation unit (3) and through which the gas flows from one side to another side in a predetermined direction. The inlet (5) is disposed closer to an outer circumferential portion (131) of the upstream-side flow path (130) than the ozone sensor (4).
    Type: Application
    Filed: March 24, 2022
    Publication date: March 28, 2024
    Inventors: Shinichiro KITO, Takeshi UEYAMA, Yoichi HATTORI, Hiroyuki NISHIYAMA, Hideki HASUNUMA, Takahiro YOKOYAMA, Takayuki OHTANI
  • Publication number: 20230268710
    Abstract: A gas laser apparatus according to an aspect of the present disclosure includes a main discharge circuit that supplies main discharge voltage that causes main discharge to a pair of main discharge electrodes, and a pre-ionization circuit that supplies pre-ionization voltage that causes corona discharge to a pre-ionization electrode. The main discharge circuit includes a step-up pulse transformer, a main capacitor and a switch connected to a primary side of the step-up pulse transformer, a first power source that charges the main capacitor, a first capacitor connected in parallel to a secondary side of the step-up pulse transformer, a first magnetic switch connected to the first capacitor, and a peaking capacitor connected in parallel to the first capacitor through the first magnetic switch and to the main discharge electrodes. An interval between start timings of the corona discharge and the main discharge is 30 ns to 60 ns inclusive.
    Type: Application
    Filed: May 1, 2023
    Publication date: August 24, 2023
    Applicant: Gigaphoton Inc.
    Inventors: Youichi YAMANOUCHI, Hiroshi UMEDA, Kazuki NAGAI, Takeshi UEYAMA
  • Publication number: 20210239636
    Abstract: A gas sensor includes a wiring board having an opening, a sensor element disposed within the opening and having a detection section and a heater section, and a plurality of electricity conducting members each of which has a first end portion joined to the wiring board and a second end portion joined to the sensor element and which establish electrical connection between the wiring board and the sensor element. The plurality of electricity conducting members fixedly suspend the sensor element within the opening. At least one of the electricity conducting members is a particular electricity conducting member having a plate-like shape, and the particular electricity conducting member includes at least one bent portion between the second end portion joined to the sensor element and the first end portion joined to the wiring board, the bent portion being bent in a thickness direction of the particular electricity conducting member.
    Type: Application
    Filed: July 18, 2017
    Publication date: August 5, 2021
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Takeshi UEYAMA, Takahiro YOKOYAMA, Hiromasa ITO, Shinichi NAKAGAWA, Shigeya AOYAMA, Kazuto MORITA
  • Patent number: 9821391
    Abstract: A saw blade includes a group A (group A1 [=straight tooth+the odd number of set teeth]+group A2 [=straight tooth+the even number of set teeth]) and a group B (group B1 [=straight tooth+the odd number of set teeth having opposite set-bending sides to those in the group A1]+group B2 [=straight tooth+the even number of set teeth having opposite set-bending sides to those in the group A2]). Wide and narrow set teeth are arranged so that a max/min ratio of the number of pitches between the narrow set teeth having identical set-bending side and set width is 1.8 or less, and a max/min ratio of the number of pitches between the wide set teeth having identical set-bending side set width is 2.7 or less.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: November 21, 2017
    Assignees: AMADA COMPANY, LIMITED, AMADA MACHINE TOOLS COMPANY, LTD.
    Inventors: Susumu Tsujimoto, Takeshi Ueyama
  • Publication number: 20150151372
    Abstract: A saw blade includes a group A (group A1 [=straight tooth+the odd number of set teeth]+group A2 [=straight tooth+the even number of set teeth]) and a group B (group B1 [=straight tooth+the odd number of set teeth having opposite set-bending sides to those in the group A1]+group B2 [=straight tooth+the even number of set teeth having opposite set-bending sides to those in the group A2]). Wide and narrow set teeth are arranged so that a max/min ratio of the number of pitches between the narrow set teeth having identical set-bending side and set width is 1.8 or less, and a max/min ratio of the number of pitches between the wide set teeth having identical set-bending side set width is 2.7 or less.
    Type: Application
    Filed: July 1, 2013
    Publication date: June 4, 2015
    Applicants: AMADA COMPANY, LIMITED, AMADA MACHINE TOOLS COMPANY, LTD.
    Inventors: Susumu Tsujimoto, Takeshi Ueyama