Patents by Inventor Kazushige Koshikawa

Kazushige Koshikawa 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: 11460497
    Abstract: A device analysis apparatus is a device analysis apparatus for determining a quality of a power semiconductor device, including an application unit that applies a voltage signal to the power semiconductor device, a light detection unit that detects light from the power semiconductor device at a plurality of detection positions and outputs detection signals based on detection results, and a determination unit that determines the quality of the power semiconductor device based on temporal changes of the detection signals.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: October 4, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Toru Matsumoto, Koichi Endo, Tomonori Nakamura, Kazushige Koshikawa
  • Patent number: 11156565
    Abstract: Provided is a method for inspecting a semiconductor device which performs an inspection of a semiconductor device as an object to be inspected, including attaching an adhesive tape to a surface to be inspected of the semiconductor device, acquiring a first pattern image based on a light detected from a region including a surface of the surface to be inspected to which the adhesive tape is attached, inputting an electrical signal to the semiconductor device to which the adhesive tape is attached, acquiring a first heat generation image by detecting light according to heat radiation from the region including the surface to which the adhesive tape is attached in a state in which the electrical signal is input, and superimposing the first pattern image and the first heat generation image.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: October 26, 2021
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Toru Matsumoto, Kazushige Koshikawa
  • Patent number: 11125698
    Abstract: Provided is a method for inspecting a semiconductor device which performs an inspection of a semiconductor device as an object to be inspected, including attaching an adhesive tape to a surface to be inspected of the semiconductor device, acquiring a first pattern image based on a light detected from a region including a surface of the surface to be inspected to which the adhesive tape is attached, inputting an electrical signal to the semiconductor device to which the adhesive tape is attached, acquiring a first heat generation image by detecting light according to heat radiation from the region including the surface to which the adhesive tape is attached in a state in which the electrical signal is input, and superimposing the first pattern image and the first heat generation image.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: September 21, 2021
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Toru Matsumoto, Kazushige Koshikawa
  • Publication number: 20200386693
    Abstract: Provided is a method for inspecting a semiconductor device which performs an inspection of a semiconductor device as an object to be inspected, including attaching an adhesive tape to a surface to be inspected of the semiconductor device, acquiring a first pattern image based on a light detected from a region including a surface of the surface to be inspected to which the adhesive tape is attached, inputting an electrical signal to the semiconductor device to which the adhesive tape is attached, acquiring a first heat generation image by detecting light according to heat radiation from the region including the surface to which the adhesive tape is attached in a state in which the electrical signal is input, and superimposing the first pattern image and the first heat generation image.
    Type: Application
    Filed: May 14, 2018
    Publication date: December 10, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Toru MATSUMOTO, Kazushige KOSHIKAWA
  • Publication number: 20200110127
    Abstract: A device analysis apparatus is a device analysis apparatus for determining a quality of a power semiconductor device, including an application unit that applies a voltage signal to the power semiconductor device, a light detection unit that detects light from the power semiconductor device at a plurality of detection positions and outputs detection signals based on detection results, and a determination unit that determines the quality of the power semiconductor device based on temporal changes of the detection signals.
    Type: Application
    Filed: April 18, 2018
    Publication date: April 9, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Toru MATSUMOTO, Koichi ENDO, Tomonori NAKAMURA, Kazushige KOSHIKAWA
  • Patent number: 6023326
    Abstract: A surveying system comprises a surveying machine (11) which is disposed at a reference point (A) and a reflecting mirror (5) which is disposed on the side of a target point (B). In this surveying system, a signal-light projecting device (16) for projecting a beam of signal light (P3) onto the surveying machine (11) is disposed on the side of the target point (B), and a rough-direction detecting device (20) for detecting roughly a direction in which the signal-light projecting device (16) is located by receiving the beam of signal light (P8), and a precise-direction detecting device (21) for detecting precisely the direction in which the signal-light projecting device (16) is located by receiving the beam of signal light (P3) are disposed on the side of the surveying machine (11).
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: February 8, 2000
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Yasutaka Katayama, Kazuaki Kimura, Jun Sasagawa, Kazushige Koshikawa
  • Patent number: 5532813
    Abstract: In a light-wave distance meter, a light source device emits reference modulated light beams from multiple spatially-separated light emitting areas, an optical means radiates a light beam derived from the multiple modulated light beams to the target of measurement, a light beam reception means receives the reflected return light beam from the target and converts it into an electrical pulse signal, and a distance measuring means calculates the distance to the target based on the time difference between the light beam emission and the return light beam reception. The low coherence and high intensity light beam produced by the light source device enables the extension of the maximum measurable distance.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: July 2, 1996
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Masahiro Ohishi, Fumio Ohtomo, Kazuaki Kimura, Masaaki Yabe, Yasutaka Katayama, Kazushige Koshikawa, Takeshige Saito