Patents by Inventor Yoshiki Fujisawa

Yoshiki Fujisawa 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: 12009229
    Abstract: A laser beam irradiating unit of a laser processing apparatus includes a laser oscillator, a mirror configured to reflect a laser beam emitted from the laser oscillator and propagate the laser beam to a processing point, a power measuring unit configured to measure power of leakage light of the laser beam transmitted without being reflected by the mirror, and a condensing lens configured to condense the laser beam propagated by the mirror and irradiate a workpiece with the condensed laser beam. The control unit measures the power of the leakage light of the laser beam by the power measuring unit while irradiating the workpiece with the laser beam.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: June 11, 2024
    Assignee: DISCO CORPORATION
    Inventors: Hiroki Uryu, Seiji Miura, Haruhiko Asahi, Hisatoshi Fujisawa, Yoshiki Kobayashi, Hidenori Akamatsu
  • Publication number: 20240079863
    Abstract: A drain wire correcting device 10 includes: a retention device 20 configured to retain a sheathed portion 1a of a multi-core cable 1; gripping members 41, 42 configured to grip a drain wire 2 on an axis Ax; a moving device 60 configured to move at least one of the multi-core cable 1 and the gripping members 41, 42 along the axis Ax; and a rotating device 70 configured to rotate at least one of the multi-core cable 1 and the gripping members 41, 42 around the axis Ax. The drain wire correcting device 10 executes a squeeze control of moving the gripping members 41, 42 along the axis Ax while the gripping members 41, 42 are in contact with the drain wire 2, thereby squeezing the drain wire 2 toward a distal end side, and executes, after the squeeze control, a rotation control causing the gripping members 41, 42 to grip the drain wire 2 with a gripping force increased from that in the squeeze control and rotating the gripping members 41, 42 around the axis Ax.
    Type: Application
    Filed: December 15, 2021
    Publication date: March 7, 2024
    Inventors: Yoshiki TAKAHASHI, Naoki FUJISAWA, Ayako SHIMMURA, Miyuki MATSUMOTO
  • Patent number: 5278875
    Abstract: In a process for the synthesis of .sup.11 C-labeled methyl iodide which comprises producing .sup.11 CO.sub.2 by the irradiation of a proton beam, supplying .sup.11 CO.sub.2 gas to a collector of .sup.11 CO.sub.2 gas, bubbling .sup.11 CO.sub.2 gas into a reducing agent solution to reduce .sup.11 CO.sub.2, removing the reducing agent solution by evaporation, synthesizing .sup.11 CH.sub.3 I from the reduced product of .sup.11 CO.sub.2, and recovering .sup.11 CH.sub.3 I by distillation, the termination point of the .sup.11 CO.sub.2 gas supply, the termination point of the bubbling, the termination point of the evaporation of the reducing agent solution or the termination point of the distillation of .sup.11 CH.sub.3 I is decided by a radiation sensor provided in the vicinity of the reaction vessel or a transfer tube connecting the target box wherein .sup.11 CO.sub.2 gas is generated or a temperature sensor provided in an exhaust tube of the reaction vessel. The synthesizing time is shortened, and the yield of .
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: January 11, 1994
    Assignee: NKK Corporation
    Inventors: Yoshiki Fujisawa, Shigeki Yamazaki, Hideyuki Nakagawa, Naoko Takahashi
  • Patent number: 5217675
    Abstract: In a process for the synthesis of .sup.11 C-labeled methyl iodide which comprises producing .sup.11 CO.sub.2 by the irradiation of a proton beam, supplying .sup.11 CO.sub.2 gas to a collector of .sup.11 CO.sub.2 gas, bubbling .sup.11 CO.sub.2 gas into a reducing agent solution to reduce .sup.11 CO.sub.2, removing the reducing agent solution by evaporation, synthesizing .sup.11 CH.sub.3 I from the reduced product of .sup.11 CO.sub.2, and recovering .sup.11 CH.sub.3 I by distillation, the termination point of the .sup.11 CO.sub.2 gas supply, the termination point of the bubbling, the termination point of the evaporation of the reducing agent solution or the termination point of the distillatin of .sup.11 CH.sub.3 I is decided by a radiation sensor provided in the vicinity of the reaction vessel or a transfer tube connecting the target box wherein .sup.11 CO.sub.2 gas is generated or a temperature sensor provide in an exhaust tube of the reaction vessel. The synthesizing time is shortened, and the yield of .sup.
    Type: Grant
    Filed: June 18, 1991
    Date of Patent: June 8, 1993
    Assignee: NKK Corporation
    Inventors: Yoshiki Fujisawa, Shigeki Yamazaki, Hideyuki Nakagawa, Naoko Takahashi