Iwasaki Tsushinki Kabushiki Kaisha

Organization

  • BOTH OF, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Subscriber's circuit for time division switching system

    • Patent number 4,592,046
    • Issue date May 27, 1986
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Yoshihiro Kawata
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Synchronization system for key telephone system

    • Patent number 4,583,221
    • Issue date Apr 15, 1986
    • Iwasaki Tsushinki K.K.
    • Seiya Uchida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone transmission system

    • Patent number 4,583,214
    • Issue date Apr 15, 1986
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Hiroyuki Miyashita
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Facsimile connection system

    • Patent number 4,558,369
    • Issue date Dec 10, 1985
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Masaru Shinohara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Control signal transmission system for key telephone system

    • Patent number 4,551,583
    • Issue date Nov 5, 1985
    • Telegraph & Telephone Pub. Corp.
    • Koichi Sekiguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Time interval measuring system

    • Patent number 4,523,289
    • Issue date Jun 11, 1985
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Masafumi Soma
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Synchronization system for key telephone system

    • Patent number 4,502,138
    • Issue date Feb 26, 1985
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Akiho Doi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Howler tone sending-out system in time-division electronic exchanges

    • Patent number 4,502,139
    • Issue date Feb 26, 1985
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Teruo Matsufuji
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Reception system for key telephone system

    • Patent number 4,490,820
    • Issue date Dec 25, 1984
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Akiho Doi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Power source circuit

    • Patent number 4,479,085
    • Issue date Oct 23, 1984
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Seiya Uchida
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Two-way signal transmission and one-way DC power supply using a sin...

    • Patent number 4,450,571
    • Issue date May 22, 1984
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Takashi Hirayama
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone system

    • Patent number 4,410,767
    • Issue date Oct 18, 1983
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Kouichi Sekiguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Waveform searching system

    • Patent number 4,399,512
    • Issue date Aug 16, 1983
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Masafumi Soma
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Hybrid circuit

    • Patent number 4,380,690
    • Issue date Apr 19, 1983
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Teruo Matsufuji
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Push-button dial circuit

    • Patent number 4,367,375
    • Issue date Jan 4, 1983
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Yuuji Tsuruga
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Channel switching network

    • Patent number 4,353,066
    • Issue date Oct 5, 1982
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Tetsuro Inomata
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Synchronization system for key telephone system

    • Patent number 4,314,109
    • Issue date Feb 2, 1982
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Koichi Sekiguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Light signal observation device

    • Patent number 4,289,399
    • Issue date Sep 15, 1981
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Kozo Uchida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone systems

    • Patent number 4,280,022
    • Issue date Jul 21, 1981
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Koichi Sekiguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone system

    • Patent number 4,254,306
    • Issue date Mar 3, 1981
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Kouichi Sekiguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone system

    • Patent number 4,234,765
    • Issue date Nov 18, 1980
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Kouichi Sekiguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Waveform comparison and display system using cathode ray tube

    • Patent number 4,225,810
    • Issue date Sep 30, 1980
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Takanori Ushiro
    • G01 - MEASURING TESTING
  • Information Patent Grant

    System for receiving remote control signal in automatic telephone a...

    • Patent number 4,203,007
    • Issue date May 13, 1980
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Nobuyoshi Hatori
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Remote-controllable automatic telephone answering device

    • Patent number 4,192,971
    • Issue date Mar 11, 1980
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Eiji Morigami
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Ringing signal detector

    • Patent number 4,184,053
    • Issue date Jan 15, 1980
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Norio Saneyoshi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Rotary telephone dial

    • Patent number 4,144,413
    • Issue date Mar 13, 1979
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Tadashi Kodama
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone system

    • Patent number 4,092,501
    • Issue date May 30, 1978
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Akihiko Suzuki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone system

    • Patent number 4,027,110
    • Issue date May 31, 1977
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Hikaru Takematsu
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Amplitude-limiter

    • Patent number 4,008,440
    • Issue date Feb 15, 1977
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Shigeyuki Mizukoshi
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    System for detecting the transmission direction of a signal on a tw...

    • Patent number 3,974,401
    • Issue date Aug 10, 1976
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Hisashi Eguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

  • Information Trademark

    78230086 - ELEFAX

    • Serial number 78230086
    • Registration number 2958049
    • Filing date Mar 26, 2003
    • IWASAKI TSUSHINKI KABUSHIKI KAISHA (IWATSU ELECTRIC CO., LTD)
    • 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
  • Information Trademark

    75134709 - IWATSU

    • Serial number 75134709
    • Registration number 2237131
    • Filing date Jul 10, 1996
    • IWASAKI TSUSHINKI KABUSHIKI KAISHA
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    75134708 - IWATSU

    • Serial number 75134708
    • Registration number 2123065
    • Filing date Jul 10, 1996
    • IWASAKI TSUSHINKI KABUSHIKI KAISHA (IWATSU ELECTRIC CO., LTD.)
    • 7 - Machines and machine tools