Patents by Inventor Akihiro Kageyama

Akihiro Kageyama 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: 9460899
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: October 4, 2016
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Hiroyuki Kyushima, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Publication number: 20150371835
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Application
    Filed: September 1, 2015
    Publication date: December 24, 2015
    Inventors: Hiroyuki KYUSHIMA, Hideki SHIMOI, Akihiro KAGEYAMA, Keisuke INOUE, Masuo ITO
  • Patent number: 9147559
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: September 29, 2015
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Hiroyuki Kyushima, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Publication number: 20140111085
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 24, 2014
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Hiroyuki KYUSHIMA, Hideki SHIMOI, Akihiro KAGEYAMA, Keisuke INOUE, Masuo ITO
  • Patent number: 8643258
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: February 4, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hiroyuki Kyushima, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Patent number: 8545156
    Abstract: A screw tightening structure includes an indented concave recess formed on a screw, and mating convex sections provided on a screw tightening tool for tightening the screw: the recess and the mating convex sections including three or more torque transfer portions, respectively, which protrude outward and are disposed at equiangular intervals for concentrically mating engagements; rotating the screw tightening tool causing the torque transfer portions of the mating convex sections to transfer a tightening torque to the screw via the torque transfer portions of the recess; under which outer circumferential edge portions of the torque transfer portions of the mating convex sections to be brought into abutting contact with sidewall of the torque transfer portions of the recess with the tightening torque being transferred to the screw via force application points Q representing resulting abutment portions.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: October 1, 2013
    Assignee: OSG System Products Co., Ltd.
    Inventors: Akihiro Kageyama, Kouzou Yamamoto
  • Patent number: 8511959
    Abstract: A screw tightening structure includes an indented concave recess formed on a screw, and mating convex sections provided on a screw tightening tool for tightening the screw: the recess and the mating convex sections including three or more torque transfer portions, respectively, which protrude outward and are disposed at equiangular intervals for concentrically mating engagements; rotating the screw tightening tool causing the torque transfer portions of the mating convex sections to transfer a tightening torque to the screw via the torque transfer portions of the recess; under which outer circumferential edge portions of the torque transfer portions of the mating convex sections to be brought into abutting contact with sidewall of the torque transfer portions of the recess with the tightening torque being transferred to the screw via force application points Q representing resulting abutment portions.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: August 20, 2013
    Assignee: OSG System Products Co., Ltd.
    Inventors: Akihiro Kageyama, Kouzou Yamamoto
  • Publication number: 20120274204
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Application
    Filed: July 13, 2012
    Publication date: November 1, 2012
    Inventors: Hiroyuki KYUSHIMA, Hideki SHIMOI, Akihiro KAGEYAMA, Keisuke INOUE, Masuo ITO
  • Patent number: 8242694
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: August 14, 2012
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hiroyuki Kyushima, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Publication number: 20120099944
    Abstract: A screw tightening structure includes an indented concave recess formed on a screw, and mating convex sections provided on a screw tightening tool for tightening the screw: the recess and the mating convex sections including three or more torque transfer portions, respectively, which protrude outward and are disposed at equiangular intervals for concentrically mating engagements; rotating the screw tightening tool causing the torque transfer portions of the mating convex sections to transfer a tightening torque to the screw via the torque transfer portions of the recess; under which outer circumferential edge portions of the torque transfer portions of the mating convex sections to be brought into abutting contact with sidewall of the torque transfer portions of the recess with the tightening torque being transferred to the screw via force application points Q representing resulting abutment portions.
    Type: Application
    Filed: June 24, 2009
    Publication date: April 26, 2012
    Applicant: OSG SYSTEM PRODUCTS CO., LTD.
    Inventors: Akihiro Kageyama, Kouzou Yamamoto
  • Patent number: 8022606
    Abstract: An electron multiplier that can easily obtain characteristics according to a purpose is provided. By bonding a marginal portion 23 of an MCP 2 and a marginal portion 33 of an MCP 3 to each other via a conductive spacer layer 7, a gap 12 is formed between channel portions 22, 32. Therefore, when the electron multiplier is used for a purpose that requires a particularly high gain, by adjusting the thickness of the spacer layer 7, the gain can be increased by increasing the gap 12. In addition, when the electron multiplier is used for a purpose that requires an increase in gain as well as time characteristics, by adjusting the thickness of the spacer layer 7, the size of the gap 12 can be adjusted so that desired characteristics are obtained. Consequently, by only adjusting the thickness of the spacer layer 7, characteristics according to the purpose can be easily obtained.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: September 20, 2011
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Akio Suzuki, Etsuo Iizuka, Akihiro Kageyama, Motohiro Suyama
  • Publication number: 20110221336
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Application
    Filed: May 23, 2011
    Publication date: September 15, 2011
    Inventors: Hiroyuki KYUSHIMA, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Patent number: 7977878
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: July 12, 2011
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hiroyuki Kyushima, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Publication number: 20100225221
    Abstract: An electron multiplier that can easily obtain characteristics according to a purpose is provided. By bonding a marginal portion 23 of an MCP 2 and a marginal portion 33 of an MCP 3 to each other via a conductive spacer layer 7, a gap 12 is formed between channel portions 22, 32. Therefore, when the electron multiplier is used for a purpose that requires a particularly high gain, by adjusting the thickness of the spacer layer 7, the gain can be increased by increasing the gap 12. In addition, when the electron multiplier is used for a purpose that requires an increase in gain as well as time characteristics, by adjusting the thickness of the spacer layer 7, the size of the gap 12 can be adjusted so that desired characteristics are obtained. Consequently, by only adjusting the thickness of the spacer layer 7, characteristics according to the purpose can be easily obtained.
    Type: Application
    Filed: March 2, 2010
    Publication date: September 9, 2010
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Akio SUZUKI, Etsuo Iizuka, Akihiro Kageyama, Motohiro Suyama
  • Patent number: 7602122
    Abstract: The present invention relates to a photomultiplier of a fine structure that realizes a high multiplier efficiency. The photomultiplier comprises an outer casing whose interior is maintained at vacuum, and, in the outer case, a photocathode that emits photoelectrons in response to incident light, an electron multiplier section that performs cascade multiplication of the photoelectrons emitted from the photocathode, and an anode for taking out secondary electrons, which are generated at the electron multiplier section, are arranged. In particular, groove portions for performing cascade multiplication of electrons from the photocathode are provided in the electron multiplier section, and on the respective surfaces of each pair of wall portions that define the groove portions are provided with one or more protrusions each having a secondary electron emitting surface formed on the surface thereof.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: October 13, 2009
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hiroyuki Kyushima, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Publication number: 20080018246
    Abstract: The present invention relates to a photomultiplier of a fine structure that realizes a high multiplier efficiency. The photomultiplier comprises an outer casing whose interior is maintained at vacuum, and, in the outer case, a photocathode that emits photoelectrons in response to incident light, an electron multiplier section that performs cascade multiplication of the photoelectrons emitted from the photocathode, and an anode for taking out secondary electrons, which are generated at the electron multiplier section, are arranged. In particular, groove portions for performing cascade multiplication of electrons from the photocathode are provided in the electron multiplier section, and on the respective surfaces of each pair of wall portions that define the groove portions are provided with one or more protrusions each having a secondary electron emitting surface formed on the surface thereof.
    Type: Application
    Filed: February 16, 2005
    Publication date: January 24, 2008
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Hiroyuki Kyushima, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Publication number: 20070194713
    Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.
    Type: Application
    Filed: February 16, 2005
    Publication date: August 23, 2007
    Inventors: Hiroyuki Kyushima, Hideki Shimoi, Akihiro Kageyama, Keisuke Inoue, Masuo Ito
  • Patent number: 6586877
    Abstract: In an electron tube 1, a space S between a periphery part 15b of a semiconductor device 15 and a stem 11 is filled with an insulating resin 20. The insulating resin 20 functions as a reinforcing member while the electron tube 1 is assembled under high-temperature condition, thereby preventing a bump 16 from coming off a bump connection portion 19. Since the space S is only partly closed by the resin 20, the space between the semiconductor device 15 and the stem 11 is ensured a ventilability. That is, no air reservoir is formed between an electron incidence part 15a at the center of the semiconductor device 15 and the surface C of the stem 11, whereby air expanding at high temperature does not damage the electron incidence part 15a of the back-illuminated semiconductor device 15.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: July 1, 2003
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Motohiro Suyama, Akihiro Kageyama, Masaharu Muramatsu
  • Patent number: 6583558
    Abstract: An electron tube 10 mainly includes a sleeve 12, an input plate 14 having a photocathode surface 18, a stem 16 and a CCD 20. A vacuum is provided in an interior of the electron tube 10. The CCD 20 is fixed onto the stem such that a rear surface B faces the photocathode surface 18. In the CCD 20, on a single conductive type semiconductor substrate 64, a buried layer 66, a barrier region 68, a SiO2 layer 70, a storage electrode layer 72, a transmission electrode layer 74, and a barrier electrode layer 76 are formed at their predetermined positions. A PSG film 78 is formed at an entire front surface A over these layers to flatten the surface of the CCD 20. Further, SiN film 106 mainly composed of SiN is formed above the PSG film over the entire front surface A.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: June 24, 2003
    Assignee: Hamamatsu Photonics K. K.
    Inventors: Motohiro Suyama, Akihiro Kageyama, Masaharu Muramatsu