Patents by Inventor Takashi Kajiyama

Takashi Kajiyama 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: 20190242018
    Abstract: Disclosed is a surface-treatment solution for producing a zinc or zinc alloy coated steel sheet with a surface-coating layer that does not contain a chromium compound in the surface-coating layer and that is excellent in all of heat discoloration resistance, heat cracking resistance, planar part anti-corrosion property, corrosion resistance after alkali degreasing, blackening resistance, stack blackening resistance, anti-water stain property, solvent resistance, perspiration resistance, coating adhesion property, and storage stability. The disclosed surface-treatment solution contains a glycidyl group-containing silane coupling agent (A), a tetraalkoxysilane (B), a zirconium carbonate compound (C), and an anionic polyurethane resin (D) having a glass transition temperature (Tg) of 80° C. to 130° C., a vanadium compound (E), a molybdic acid compound (F), and water, the surface-treatment solution having a pH of 8.0 to 10.0, and the amount of each component satisfying a predetermined relationship.
    Type: Application
    Filed: October 6, 2017
    Publication date: August 8, 2019
    Applicant: JFE STEEL CORPORATION
    Inventors: Reona ENDO, Kazuhisa OKAI, Hiroshi KAJIYAMA, Takashi KAWANO
  • Patent number: 8605813
    Abstract: In a transmitter, communication is efficiently performed by a DSTBC scheme. In a transmitter which transmits a signal using the DSTBC scheme, the content of a transmission process is set so that a state where a symbol is not present is realized at the origin of signal arrangement in a DSTBC encoder. As an example, the setting is performed so that an input to the DSTBC encoder is calculated using a predetermined operation in which a state where a symbol is not present is realized at the origin of signal arrangement in the DSTBC encoder. As another example, the setting is performed so that initial values in which a state where a symbol is not present is realized at the origin of signal arrangement in the DSTBC encoder are used in differential encoding of the DSTBC encoder.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: December 10, 2013
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Hiroyuki Akutagawa, Takashi Kajiyama, Takehiko Kobayashi
  • Publication number: 20120314800
    Abstract: In a transmitter, communication is efficiently performed by a DSTBC scheme. In a transmitter which transmits a signal using the DSTBC scheme, the content of a transmission process is set so that a state where a symbol is not present is realized at the origin of signal arrangement in a DSTBC encoder. As an example, the setting is performed so that an input to the DSTBC encoder is calculated using a predetermined operation in which a state where a symbol is not present is realized at the origin of signal arrangement in the DSTBC encoder. As another example, the setting is performed so that initial values in which a state where a symbol is not present is realized at the origin of signal arrangement in the DSTBC encoder are used in differential encoding of the DSTBC encoder.
    Type: Application
    Filed: February 25, 2011
    Publication date: December 13, 2012
    Inventors: Hiroyuki Akutagawa, Takashi Kajiyama, Takehiko Kobayashi
  • Patent number: 8009205
    Abstract: An imaging device to which a portable storage medium is attachable, includes: a portable storage medium attachment section which attaches the portable storage medium; an inside storage medium which links image data imaged to information of imaging date and time and stores the data; and a transfer control section which controls a transfer of the image data from the inside storage medium to the portable storage medium, the portable storage medium having a data area which stores the image data transferred and a system area which stores management data generated corresponding to the image data stored in the data area, the transfer control section setting time stamp information of the management data generated in the portable storage medium corresponding to the image data transferred from the inside storage medium to the portable storage medium as the information of imaging date and time linked to the image data transferred.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: August 30, 2011
    Assignee: Ricoh Company, Ltd.
    Inventor: Takashi Kajiyama
  • Patent number: 7777802
    Abstract: An AF controlling unit (83) starts an outside light AF operation controlled by an outside AF unit (81) by a half-pressing of a shutter release button (61), and a change over between the outside AF operation and a CCDAF operation controlled by a CCDAF unit (82) is controlled corresponding to an elapsed time t (timer 84) from a starting of the operation of the outside light AF operation and a pressing condition (a detection of the half-pressing by a half-pressed detecting unit (62), the detection of a full-pressing by a full-pressed detecting unit (63) or a press-in releasing) of a shutter release button (61) after the starting of the outside light AF operation controlled by the outside AF unit (81) by the half-pressing of the shutter release button (61).
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: August 17, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Junichi Shinohara, Kohichi Sugiura, Kenji Shiraishi, Takashi Kajiyama
  • Publication number: 20080211926
    Abstract: An imaging device to which a portable storage medium is attachable, includes: a portable storage medium attachment section which attaches the portable storage medium; an inside storage medium which links image data imaged to information of imaging date and time and stores the data; and a transfer control section which controls a transfer of the image data from the inside storage medium to the portable storage medium, the portable storage medium having a data area which stores the image data transferred and a system area which stores management data generated corresponding to the image data stored in the data area, the transfer control section setting time stamp information of the management data generated in the portable storage medium corresponding to the image data transferred from the inside storage medium to the portable storage medium as the information of imaging date and time linked to the image data transferred.
    Type: Application
    Filed: February 12, 2008
    Publication date: September 4, 2008
    Inventor: Takashi Kajiyama
  • Publication number: 20080036901
    Abstract: An AF controlling unit (83) starts an outside light AF operation controlled by an outside AF unit (81) by a half-pressing of a shutter release button (61), and a change over between the outside AF operation and a CCDAF operation controlled by a CCDAF unit (82) is controlled corresponding to an elapsed time t (timer 84) from a starting of the operation of the outside light AF operation and a pressing condition (a detection of the half-pressing by a half-pressed detecting unit (62), the detection of a full-pressing by a full-pressed detecting unit (63) or a press-in releasing) of a shutter release button (61) after the starting of the outside light AF operation controlled by the outside AF unit (81) by the half-pressing of the shutter release button (61).
    Type: Application
    Filed: October 16, 2007
    Publication date: February 14, 2008
    Inventors: Junichi SHINOHARA, Kohichi Sugiura, Kenji Shiraishi, Takashi Kajiyama
  • Patent number: 7301579
    Abstract: An AF controlling unit (83) starts an outside light AF operation controlled by an outside AF unit (81) by a half-pressing of a shutter release button (61), and a change over between the outside AF operation and a CCDAF operation controlled by a CCDAF unit (82) is controlled corresponding to an elapsed time t (timer 84) from a starting of the operation of the outside light AF operation and a pressing condition (a detection of the half-pressing by a half-pressed detecting unit (62), the detection of a full-pressing by a full-pressed detecting unit (63) or a press-in releasing) of a shutter release button (61) after the starting of the outside light AF operation controlled by the outside AF unit (81) by the half-pressing of the shutter release button (61).
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: November 27, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Junichi Shinohara, Kohichi Sugiura, Kenji Shiraishi, Takashi Kajiyama
  • Patent number: 7298413
    Abstract: A photographing apparatus is provided that comprises a photographing lens capable of moving a focal plane of a subject image, a CCD for receiving the subject image and outputting a signal into which the subject image is photo-electrically transferred, as image output, a motor section for driving the photographing lens, and a CPU for controlling an operation of the motor section. This CPU divides a range for enabling driving of the photographing lens 1 into a minimum number of or more sections which are capable of being interpolated, drives the photographing lens to each divided section in sequence, figures out a focus signal based on a photographing signal obtained from the photographing device at the each driving position, and performs interpolation processing of an evaluation value obtained from the focus signal. Further, by the interpolation processing, the CPU derives a focus position of the photographing lens which position causes the focal plane to coincide with the photographing plane.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: November 20, 2007
    Assignee: Ricoh Company, Ltd.
    Inventor: Takashi Kajiyama
  • Publication number: 20040263633
    Abstract: An AF controlling unit (83) starts an outside light AF operation controlled by an outside AF unit (81) by a half-pressing of a shutter release button (61), and a change over between the outside AF operation and a CCDAF operation controlled by a CCDAF unit (82) is controlled corresponding to an elapsed time t (timer 84) from a starting of the operation of the outside light AF operation and a pressing condition (a detection of the half-pressing by a half-pressed detecting unit (62), the detection of a full-pressing by a full-pressed detecting unit (63) or a press-in releasing) of a shutter release button (61) after the starting of the outside light AF operation controlled by the outside AF unit (81) by the half-pressing of the shutter release button (61).
    Type: Application
    Filed: August 8, 2003
    Publication date: December 30, 2004
    Inventors: Junichi Shinohara, Kohichi Sugiura, Kenji Shiraishi, Takashi Kajiyama
  • Publication number: 20030223740
    Abstract: A photographing apparatus is provided that comprises a photographing lens capable of moving a focal plane of a subject image, a CCD for receiving the subject image and outputting a signal into which the subject image is photo-electrically transferred, as image output, a motor section for driving the photographing lens, and a CPU for controlling an operation of the motor section. This CPU divides a range for enabling driving of the photographing lens 1 into a minimum number of or more sections which are capable of being interpolated, drives the photographing lens to each divided section in sequence, figures out a focus signal based on a photographing signal obtained from the photographing device at the each driving position, and performs interpolation processing of an evaluation value obtained from the focus signal. Further, by the interpolation processing, the CPU derives a focus position of the photographing lens which position causes the focal plane to coincide with the photographing plane.
    Type: Application
    Filed: March 24, 2003
    Publication date: December 4, 2003
    Inventor: Takashi Kajiyama
  • Patent number: 4548682
    Abstract: A magnetic recording medium having excellent magnetic properties and a uniform recording envelope suitable for, in particular, high-density recording is obtained by packing a magnetic substance in the micro pores of anodic oxide film formed on an aluminum substrate by subjecting the same to an anodic oxidation treatment to produce an anodic oxide film having a thickness of at least 4 .mu.m. The recording medium can be improved by immersing the anodized aluminum substrate in an acid or alkali bath to chemically dissolve a part of the anodic oxide film, and thereby enlarge the micro pores in the anodic oxide film to a pore diameter in the range of 300 .ANG. to 1,400 .ANG.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: October 22, 1985
    Assignee: Nippon Light Metal Company Limited
    Inventors: Koichi Yoshida, Yoshio Hirayama, Yasuo Oka, Takashi Kajiyama
  • Patent number: 4540449
    Abstract: An aluminum substrate for magnetic recording media such as magnetic disks, etc., is composed of an aluminum alloy plate containing 2 to 6% by weight magnesium and impurities in only limited amounts and having on the surface an anodic oxidation film with thickness more than 3 .mu.m formed by a chromic acid process. In the thus-anodized aluminum substrate, the occurrence of black spot defects is greatly reduced and the formation of cracks upon heating the substrate to high temperatures is prevented in spite of the thicker anodic oxidation film.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: September 10, 1985
    Assignee: Nippon Light Metal Company Limited
    Inventors: Koichi Yoshida, Yoshio Hirayama, Yasuo Oka, Takashi Kajiyama, Kunihiko Hotta
  • Patent number: 4507179
    Abstract: An aluminum substrate suitable for making high-density magnetic recording media is produced by anodizing a surface of the aluminum substrate in an aqueous chromic acid solution at an electrolytic voltage higher than 60 volts. The anodic film thus formed has no black spot defects and also exhibits no cracks when the substrate is heated at a high temperature for forming a magnetic recording layer.The effect is further improved by adding a small amount of oxalic acid to the electrolyte.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: March 26, 1985
    Assignee: Nippon Light Metal Company Limited
    Inventors: Koichi Yoshida, Yoshio Hirayama, Yasuo Oka, Takashi Kajiyama
  • Patent number: 4414077
    Abstract: The invention comprises an improved method for producing anodized aluminum articles colored by means of optical interference effects. The method comprises the steps of subjecting an aluminum article that has been anodized by conventional process to a treatment for modifying the pore structure of the anodic film, thereafter subjecting it while connected as anode to an electrolytic treatment for modifying the barrier layer between the oxide and the metal substrate and finally coloring the article while connected as cathode in an electrolyic bath containing one or more dissolved metal salts using DC current on which is superimposed a train of positive current pulses.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: November 8, 1983
    Assignee: Nippon Light Metal Company Limited
    Inventors: Kohichi Yoshida, Teruo Miyashita, Yasuo Oka, Takashi Kajiyama