Patents by Inventor Kunio Wakai

Kunio Wakai 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: 11948462
    Abstract: An image generating apparatus generates an image to be displayed on a display and includes at least one memory and a control circuit. The control circuit acquires a plurality of camera images captured by a plurality of cameras installed in a vehicle, calculates a distance between one of the cameras and a target to be projected in in the camera images, detects a position of a light-transmissive object or a reflective object in the camera images, and generates an image from a point of view that is different from points of view of the plurality of camera images by using the plurality of camera images and the distance, the generated image including a predetermined image that is displayed at the position of the light-transmissive object or the reflective object.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: April 2, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ayako Maruyama, Kunio Nobori, Takeo Azuma, Satoshi Sato, Nobuhiko Wakai
  • Patent number: 6367411
    Abstract: A continuous plasma CVD apparatus, characterized in that frequency of high-frequency bias is in the range of 50-900 KHz, a blocking condenser is provided between a thin film and a high-frequency source so that the product C·f of electrostatic capacity C of the blocking condenser and frequency f of the high-frequency source is 0.02 [F·Hz] or more, and the total of impedances of all the rollers provided in the route of from a substrate unwind roller to a rotating drum is 10 k&OHgr; or more and the total of impedances of all the rollers provided in the route of from the rotating drum to a wind roller is 10 k&OHgr; or more. According to this apparatus, it becomes possible to continuously form a film without causing damage and deterioration of the substrate.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: April 9, 2002
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Yoichi Ogawa, Tetsuo Mizumura, Akira Yano, Hideo Kusada, Takashi Kubota, Michio Asano, Kunio Wakai
  • Patent number: 6312524
    Abstract: A continuous plasma CVD apparatus, characterized in that frequency of high-frequency bias is in the range of 50-900 KHz, a blocking condenser is provided between a thin film and a high-frequency source so that the product C·f of electrostatic capacity C of the blocking condenser and frequency f of the high-frequency source is 0.02 [F·Hz] or more, and the total of impedances of all the rollers provided in the route of from a substrate unwind roller to a rotating drum is 10 k&OHgr; or more and the total of impedances of all the rollers provided in the route of from the rotating drum to a wind roller is 10 k&OHgr; or more. According to this apparatus, it becomes possible to continuously form a film without causing damage and deterioration of the substrate.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: November 6, 2001
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Yoichi Ogawa, Tetsuo Mizumura, Akira Yano, Hideo Kusada, Takashi Kubota, Michio Asano, Kunio Wakai
  • Patent number: 6044792
    Abstract: A continuous plasma CVD apparatus, characterized in that frequency of high-frequency bias is in the range of 50-900 KHz, a blocking condenser is provided between a thin film and a high-frequency source so that the product C.multidot.f of electrostatic capacity C of the blocking condenser and frequency f of the high-frequency source is 0.02 [F.multidot.Hz] or more, and the total of impedances of all the rollers provided in the route of from a substrate unwind roller to a rotating drum is 10 k.OMEGA. or more and the total of impedances of all the rollers provided in the route of from the rotating drum to a wind roller is 10 k.OMEGA. or more. According to this apparatus, it becomes possible to continuously form a film without causing damage and deterioration of the substrate.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: April 4, 2000
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Yoichi Ogawa, Tetsuo Mizumura, Akira Yano, Hideo Kusada, Takashi Kubota, Michio Asano, Kunio Wakai
  • Patent number: 5496620
    Abstract: A medium in which a magnetic layer is composed mainly of Co and oxygen and has a principal axis of magnetic anisotropy rising unidirectionally at 20.degree. to 80.degree. to a nonmagnetic substrate surface, the coercive force Hs on the surface side of the magnetic layer is 600 to 2,000 Oe and the coercive force Hb on the substrate interfacial side is less than 600 Oe, the medium being produced by treating a nonmagnetic substrate surface with a plasma in an atmosphere of an inert gas or an oxygen gas, and then depositing an alloy composed mainly of Co on the above plasma-treated nonmagnetic substrate surface while an oxygen gas is introduced into the layer-forming atmosphere.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: March 5, 1996
    Assignees: Hitachi Maxell, Ltd., Hitachi Ltd.
    Inventors: Osamu Kitakami, Kunio Wakai, Kazuetsu Yoshida
  • Patent number: 5073449
    Abstract: A magnetic recording medium comprising a substrate and a ferromagnetic metal layer, wherein the ferromagnetic metal layer includes hydrated amorphous cobalt oxide, a X-ray photoelectron spectra which is characterized in that, in the Co.sub.2p spectrum, a ratio of a peak height at 785.9.+-.0.3 eV to that at 780.0.+-.0.3 eV is 40/100 or less when a background (BG) line is drawn between lower energy side leading edge points of peaks at 780.0.+-.0.3 eV (2p.sub.3/2) and 795.6.+-.0.3 eV (2p.sub.1/2) and, in the O.sub.1s spectrum, a ratio of a peak height at 529.3.+-.0.4 eV to that at 530.8.+-.0.4 eV is from 100:110 to 100:50 when a background line is drawn between the lower energy side leading edge point and the higher energy side leading edge point of a complex peak at 530.5.+-.2.5 eV from which the peaks at 529.3.+-.0.4 eV and 530.8.+-.0.4 are derived by peak synthesis, which has good corrosion and wear resistance.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: December 17, 1991
    Assignee: Hitachi Maxell Ltd.
    Inventors: Hideaki Niimi, Noboru Isoe, Kunio Wakai, Tetsuo Mizumura
  • Patent number: 5068144
    Abstract: A perpendicular magnetic recording medium comprising a non-magnetic substrate and a magnetic layer which is formed on at least one surface of the substrate and comprises acicular particles of ferromagnetic metal oriented perpendicularly to a plane of the layer and an organic polymer filled in spaces between the acicular particles so as to surround the acicular particules, wherein a volume content of the organic polymer is about 5 to 55% by volume of the whole volume of the magnetic layer, which medium has not only good recording and reproducing characteristics but also improved durability.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: November 26, 1991
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Osamu Kitakami, Hideo Fujiwara, Kiyotaka Ojima, Youichi Ogawa, Kunio Wakai
  • Patent number: 5059337
    Abstract: The present invention provides a novel soft magnetic material superior in corrosion resistance which contains (a) a ferromagnetic metal and (b) a carbide of a ferromagnetic metal and/or a silicide of a ferromagnetic metal with at least one of (c) an amorphous carbon and/or an amorphous silicon and (d) a hydrocarbon polymer and/or a silicone polymer and which contains carbon atoms in an amount of 15 atomic % or less, preferably 9-15 atomic %, preferably prepared by the simultaneous vapor deposition of a ferromagnetic metal and a polymer.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: October 22, 1991
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Tsuyoshi Maro, Osamu Kitakami, Hideo Fujiwara, Kunio Wakai
  • Patent number: 5000984
    Abstract: A magnetic recording medium comprising a substrate and, as a recording layer, a ferromagnetic metal thin layer formed on the substrate by deposition, in which the ferromagnetic metal thin layer contains oxygen atom in such a manner that concentrations of oxygen atom in a surface layer and an interfacial layer adjacent to the substrate are higher than that in an intermediate layer between the surface and interfacial layers, which has an improved coercive force and smaller magnetic domain.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: March 19, 1991
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Kunio Wakai, Hideaki Niimi, Noboru Isoe
  • Patent number: 4983455
    Abstract: The invention provides a magnetic recording medium having a ferromagnetic metallic layer provided on a non-magnetic substrate, and an anticorrosive deposited on said ferromagnetic metallic layer containing a benzotriazole derivative as a main component. A magnetic recording medium is also provided having on a substrate, a ferromagnetic metallic layer containing cobalt as a main component, a passivated cobalt layer on said ferromagnetic metallic layer and an anticorrosive layer on said passivated cobalt layer, said anticorrosive layer comprising at least one anticorrosive selected from benzothiazole derivatives, benzoimidazole derivatives haaving at least one of amino group, nitro group, chlorine and mercapto group as substituent in the benzoimidazole skeleton, benzotriazole, compounds containing nitrosonaphthol as a main component, oxime compounds, phytic acid and its derivatives, quinaldinic acid and its derivatives, quinoline compounds, naphthaldehyde and its derivatives.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: January 8, 1991
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Kunio Wakai, Tetsuo Mizumura
  • Patent number: 4933797
    Abstract: In a recording tape cartridge having a cartridge case, magnetic recording tape and a front lid and a rear lid for protecting the magnetic tape, there are provided entrance preventing members at a bottom the cartridge case facing to clearances between side edges of the front lid and case body for preventing entrance of harmful floating particles into the area near the recording tape so as to prevent corrosion of the recording tape.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: June 12, 1990
    Assignee: Hitachi Maxell Ltd.
    Inventors: Hikaru Mizutani, Kunio Wakai, Hideo Fujiwara, Hideaki Niimi, Noboru Isoe, Toshio Doi
  • Patent number: 4855175
    Abstract: A magnetic recording medium comprising a substrate and, as a recording layer, a ferromagnetic metal thin layer formed on the substrate by deposition, in which the ferromagnetic metal thin layer contains oxygen atom in such a manner that concentrations of oxygen atom in a surface layer and an interfacial layer adjacent to the substrate are higher than that in an intermediate layer between the surface and interfacial layers, which has improved coercive force and smaller magnetic domain.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: August 8, 1989
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Kunio Wakai, Hideaki Niimi, Noboru Isoe
  • Patent number: 4847109
    Abstract: A method of and an apparatus for making a magnetic recording tape, which is free from wrinkles formed thereon, by the use of a vapor deposition technique. A length of tape reeled on a supply reel is taken up by a take-up reel after having passed through a deposition station where it is movably turned around a cylindrical drum. In one aspect, the difference in tension between two different portions of the tape moving between the drum and the take-up reel and on respective sides of a tensioning roll forming a part of at least one tension control mechanism is adjusted to a value not greater than 10N/mm.sup.2. In another aspect, a charge eraser is employed and installed in the vicinity of the drum for removing an electrostatic charge built up in the tape being moved from the drum onto the take-up reel. In a further aspect, the cylindrical drum is used having its outer peripheral surface roughened to a ten-point average surface roughness of not smaller than 0.1 .mu.m.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: July 11, 1989
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Susumu Shibasaki, Kunio Wakai
  • Patent number: 4826739
    Abstract: A magnetic recording medium comprising a substrate, a magnetic layer provided thereon, a passivated film formed on the surface of said magnetic layer, and a lubricant-containing back-coat layer whose pH is adjusted to 6.3 or more on the back of said substrate.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: May 2, 1989
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Noboru Isoe, Tetsuo Mizumura, Kunio Wakai
  • Patent number: 4755426
    Abstract: A magnetic recording medium which comprises a substrate, a magnetic layer on the substrate and a protective layer which is formed directly on the magnetic layer or on an undercoat layer formed on the magnetic layer, the protective layer comprising a carbonaceous material essentially consisting of carbon, hydrogen and oxygen, which has improved traveling properties and abrasion resistance.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: July 5, 1988
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Fumio Kokai, Minoru Ichijo, Kunio Wakai
  • Patent number: 4737415
    Abstract: A magnetic recording medium comprising a substrate, a magnetic layer and a protective layer which consists of an organic polymeric material comprising carbon atoms, hydrogen atoms and oxygen atoms, the content of the oxygen atoms increasing towards the outer surface of the protective layer, which has improved durability and corrosion resistance.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: April 12, 1988
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Minoru Ichijo, Tsunemi Ohiwa, Fumio Kokai, Takashi Kubota, Kunio Wakai