Patents by Inventor Ken Kawamura

Ken Kawamura 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: 20190181961
    Abstract: An optical receiver is configured so as to be as less susceptible to noise as possible even in the case where high noise occurs inside an optical transceiver. The optical receiver includes a connection part that connects two photodiodes (PDs) constituting a dual photodiode and a transimpedance amplifier (TIA), wherein signal lines from the dual photodiode are surrounded by a conductor pattern that is not connected to each of the signal lines for each channel, and the conductor pattern is connected to a ground pattern on the transimpedance amplifier or a power source pattern for the PDs.
    Type: Application
    Filed: June 19, 2017
    Publication date: June 13, 2019
    Inventors: Toshihiro Itoh, Yuriko Kawamura, Kiyofumi Kikuchi, Ken Tsuzuki, Hiroshi Fukuda, Shin Kamei
  • Patent number: 6964841
    Abstract: The invention is a directly imageable waterless planographic printing plate precursor comprising: at least a heat insulating layer, a heat sensitive layer, and an ink repellent layer that are provided in that order on a substrate, wherein a transmittance of the heat insulating layer for a light having a wavelength within a range of 400 to 650 nm is at most 15% over the entire range of the wavelength. The invention provides a directly imageable waterless planographic printing plate precursor that allows measurement of the dot area ratio on the printing plate with a densitometer or the like.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: November 15, 2005
    Assignee: Toray Industries, Inc.
    Inventors: Akihiko Iihara, Ken Kawamura, Mitsuru Suezawa, Kimikazu Nagase
  • Patent number: 6787291
    Abstract: A directly imageable planographic printing plate that is high in image productivity and easy to check is produced by using a directly imageable planographic printing plate that comprises at least a substrate, a thermo-sensitive layer and a ink-repelling layer in this order, wherein the thermo-sensitive layer in the printing area contains a dye that has an absorption maximum in the range of 400 nm to 700 nm, and the difference between the reflected absorption of the non-printing area and the reflected absorption of the printing area, observed at the absorption maximum wavelength of the dye, is not less than 0.3 and not more than 2.0.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: September 7, 2004
    Assignee: Toray Industries, Inc.
    Inventors: Kimikazu Nagase, Kazuki Goto, Ken Kawamura, Kunitaka Fujiyoshi
  • Publication number: 20030175619
    Abstract: The invention is a directly imageable waterless planographic printing plate precursor comprising: at least a heat insulating layer, a heat sensitive layer, and an ink repellent layer that are provided in that order on a substrate, wherein a transmittance of the heat insulating layer for a light having a wavelength within a range of 400 to 650 nm is at most 15% over the entire range of the wavelength. The invention provides a directly imageable waterless planographic printing plate precursor that allows measurement of the dot area ratio on the printing plate with a densitometer or the like.
    Type: Application
    Filed: February 26, 2003
    Publication date: September 18, 2003
    Applicant: TORAY Industries, Inc.
    Inventors: Akihiro Iihara, Ken Kawamura, Mitsuru Suezawa, Kimikazu Nagase
  • Publication number: 20020045131
    Abstract: A directly imageable planographic printing plates that is high in image productivity and easy to check is produced by using a directly imageable planographic printing plate that comprises at least a substrate, a thermo-sensitive layer and a ink-repelling layer in this order, wherein the thermo-sensitive layer in the printing area contains a dye that has an absorption maximum in the range of 400 nm to 700 nm, and the difference between the reflected absorption of the non-printing area and the reflected absorption of the printing area, observed at the absorption maximum wavelength of the dye, is not less than 0.3 and not more than 2.0.
    Type: Application
    Filed: April 5, 2001
    Publication date: April 18, 2002
    Inventors: Kimikazu Nagase, Kazuki Goto, Ken Kawamura, Kunitaka Fujiyoshi
  • Patent number: 6194122
    Abstract: A directly imageable waterless planographic printing plate precursor is a laminate of, in turn, at least a heat sensitive layer and a silicon rubber layer on a substrate. The heat sensitive layer includes (A) a light-to-heat converting material and (B) a compound which contains N—N bonds.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: February 27, 2001
    Assignee: Toray Industries, Inc.
    Inventors: Michihiko Ichikawa, Koichi Fujimaru, Norimasa Ikeda, Ken Kawamura, Kazuki Goto
  • Patent number: 6106997
    Abstract: Provided is a non-processed plate for waterless lithographic printing plates, which comprises a photosensitive layer, an ink-repellent layer and a protective layer as laminated in that order on a support and in which the photosensitive layer contains a polymerizable compound as obtained by reacting a glycidyl ether of a polyalcohol, such as hexitol or pentitol, with acrylic acid and/or methacrylic acid. The plate has good image reproducibility and good storage stability. Processing the plate gives waterless lithographic printing plates having good printing durability.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: August 22, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Masahiro Oguni, Ken Kawamura, Keiko Sugikawa
  • Patent number: 6096476
    Abstract: A directly imageable raw plate for waterless planographic printing plate, in which a heat insulating layer, heat sensitive layer and ink repellent layer are formed in this order on a substrate, comprising physical properties of 5 to 100 kgf/mm.sup.2 in initial elastic modulus and 0.05 to 5 kgf/mm.sup.2 in 5% stress as tensile properties of the heat sensitive layer or the heat insulating layer or the laminate consisting of both the layers.It can be suitably used also for large printing presses and web offset printing presses requiring high printing durability, and makes it possible to obtain an economically advantageous printing plate.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: August 1, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Shun-ichi Yanagida, Norimasa Ikeda, Ken Kawamura, Yuzuru Baba, Michihiko Ichikawa, Kouichi Fujimaru
  • Patent number: 5811210
    Abstract: The present invention relates to a water-less lithographic raw plate, in which a photosensitive layer and a silicone rubber layer are laminated in this order on a substrate, comprising: the peel bonding strength between the photosensitive layer and the silicone rubber layer being 5 to 100 g/cm, and the initial elastic modulus of the photosensitive layer after completion of exposure being 5 to 75 kgf/mm2. In the present invention, attention is paid to the peel bonding strength between the photosensitive layer and the silicone rubber layer before exposure, and it is intensified, while the photosensitive layer after completion of exposure is kept lower in elastic modulus, to provide a water-less lithographic printing plate excellent in printing durability and image reproducibility. Therefore, the water-less lithographic printing plate obtained is suitable for commercial web offset printing and newspaper web offset printing.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: September 22, 1998
    Assignee: Toray Industries, Inc.
    Inventors: Ken Kawamura, Mikio Tsuda, Norimasa Ikeda
  • Patent number: 5397681
    Abstract: According to the present invention there is provided a laminate comprising a photosensitive layer and a silicone rubber layer both laminated successively onto a base substrate, in which a main component of the photosensitive layer is formed by an adduct obtained by an addition reaction of a photopolymerizable glycidyl (meth)acrylate and a monoglycidyl ether compound not having a photopolymerizable group with a diamine compound. Because of using a photosensitive layer having such a specific composition as mentioned above, the dry planographic printing plate obtained from the present invention is suitably employable in commercial web offset printing and newspaper web offset printing.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: March 14, 1995
    Assignee: Toray Industries, Inc.
    Inventors: Mikio Tsuda, Ken Kawamura, Norimasa Ikeda, Masanao Isono
  • Patent number: 5191401
    Abstract: A semiconductor device comprises a semiconductor substrate of a first conductivity type, a first well of a second conductivity type formed on the semiconductor substrate of the first conductivity type, a first impurity diffusion layer of the first conductivity type formed on the well without contacting the semiconductor substrate, a second impurity diffusion layer of the second conductivity type which surrounds the first impurity diffusion layer and has an impurity concentration which is higher than that of the first impurity diffusion layer, a third impurity diffusion layer of the first conductivity type formed within the second impurity diffusion layer so as to contact neither the semiconductor substrate nor the first impurity diffusion layer, a source electrode connected to both the second impurity diffusion layer and the third impurity diffusion layer, a gate electrode which is formed between the first impurity diffusion layer and the third impurity diffusion layer and formed on the second impurity diffus
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: March 2, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Shirai, Ken Kawamura
  • Patent number: 5176424
    Abstract: An automobile seat assembly includes a seat cushion subassembly and a seat back subassembly coupled with the seat cushion subassembly to represent a generally L-shaped configuration. A holding device is installed in the seat cushion subassembly and is deformable in response to the sitting of a seat occupant on a sitting area of the seat cushion subassembly and holds the sitting area in a deformed shape resulting from the seat occupant sitting on the sitting area. An actuating device installed in the seat cushion subassembly actuates the holding device. A detecting device detects the actual sitting position of the seat occupant on the sitting area. A control device is operable to operate the actuating device a predetermined time after the detecting device has detected the actual sitting position of the seat occupant on the sitting area.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: January 5, 1993
    Assignee: Mazda Motor Corporation
    Inventors: Koji Tobita, Kouzou Hirota, Takeshi Takagi, Ken Kawamura, Kazuki Fujise, Yoshiaki Kinoshita
  • Patent number: 5108944
    Abstract: In a semiconductor device according to the present invention, a pair of element regions of a second conductivity type are formed so as to be electrically isolated from each other on a semiconductor substrate of a first conductivity type, a complementary MOS transistor is formed in one of the element regions of the second conductivity type, and a double-diffused MOS transistor is formed in the other element region of the second conductivity type. The complementary MOS transistor is of a surface channel type in which N- and P-channel MOS transistors are respectively formed in a pair of well diffusion layers of the first and second conductivity types formed in the element region of the second conductivity type, and conductivity types of the respective gate electrodes of the N- and P-channel MOS transistors are different from those of the respective well diffusion layers.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: April 28, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Shirai, Ken Kawamura
  • Patent number: 5075754
    Abstract: A semiconductor device comprises a substrate including a p-type first semiconductor region, an n-type second semiconductor region formed in the first semiconductor region, a first insulating layer formed on surfaces of the first semiconductor region and the second semiconductor region, a first conductive layer formed, via the first insulating layer, over the surface of the second semiconductor region, and set at substantially the same potential as that of the second semiconductor region, an n-type third semiconductor region formed to be spaced apart from the second semiconductor region and formed in the first semiconductor region so that a part of the third semiconductor region overlaps a part of the first conductive layer, via the first insulating layer, a second conductive layer connected to the third semiconductor region through an opening formed in the first insulating layer, and a wiring layer formed on a second insulating layer provided on surfaces of the first and second conductive layers.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: December 24, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Shirai, Ken Kawamura
  • Patent number: 5008724
    Abstract: A semiconductor device comprising a semiconductor substrate, a field effect transistor formed in the substrate, and a diode connected to the field effect transistor and formed on the insulation film formed on the substrate. Since the diode is electrically insulated from the substrate by the insulation film, no parasitic PNPN thyristor is formed in the semiconductor substrate. Therefore, a latch-up is prevented from occurring in the semiconductor device.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: April 16, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Shirai, Ken Kawamura
  • Patent number: 4957845
    Abstract: The present invention is concerned with a printing plate of which image formation is done by photoirradiation, having a front side covered waith a peelable or removable protective layer which contains a photofading material. The printing plate is safe against fogging to light and can be used under ordinary illumination.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: September 18, 1990
    Assignee: Toray Industries, Incorporated
    Inventors: Masanao Isono, Ken Kawamura, Masaya Asano, Tetuo Suzuki, Shigeo Abiko
  • Patent number: 4878096
    Abstract: In a semiconductor device according to the present invention, a pair of element regions of a second conductivity type are formed so as to be electrically isolated from each other on a semiconductor substrate of a first conductivity type, a complementary MOS transistor is formed in one of the element regions of the second conductivity type, and a double-diffused MOS transistor is formed in the other element region of the second conductivity type. The complementary MOS transistor is of a surface channel type in which N- and P-channel MOS transistors are respectively formed in a pair of well diffusion layers of the first and second conductivity types formed in the element region of the second conductivity type, and conductivity types of the respective gate electrodes of the N- and P-channel MOS transistors are different from those of the respective well diffusion layers.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: October 31, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Shirai, Ken Kawamura
  • Patent number: 4707720
    Abstract: There is disclosed an NPN transistor comprising collector region of N conductivity type, base region of P conductivity type formed in the collector region, and emitter region of N conductivity type formed in the collector region. The collector and emitter regions define therebetween a planar PN junction. The NPN transistor further comprises a field plate electrode layer, when the transistor is viewed from above, extending from the periphery of the base region to the collector region. The field plate electrode layer comprises P conductivity semiconductor portion and N conductivity semiconductor portion. The P conductivity semiconductor portion is on the side of the base region. The N conductivity semiconductor portion is on the side of the collector region.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: November 17, 1987
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Shirai, Ken Kawamura
  • Patent number: D277170
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: January 15, 1985
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshihiko Sugiyama, Ken Kawamura
  • Patent number: D312451
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: November 27, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayoshi Katoh, Benito Mishiro, Makoto Terauchi, Ken Kawamura