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HITACHI COMMUNICATION SYSTEM

Overview
  • Total Patents
    419
About

HITACHI COMMUNICATION SYSTEM has a total of 419 patent applications. Its first patent ever was published in 1987. It filed its patents most often in Japan and Republic of Korea. Its main competitors in its focus markets basic communication technologies, audio-visual technology and telecommunications are SPECTRIAN CORP, INNOGRATION SUZHOU CO LTD and ZEEVO INC.

Patent filings in countries

World map showing HITACHI COMMUNICATION SYSTEMs patent filings in countries
# Country Total Patents
#1 Japan 418
#2 Republic of Korea 1

Patent filings per year

Chart showing HITACHI COMMUNICATION SYSTEMs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Shimizu Hatsuo 35
#2 Yamada Izuru 14
#3 Fujio Toshihide 12
#4 Ishii Mitsuru 11
#5 Niimura Atsushi 10
#6 Hayashi Morihiko 10
#7 Tomioka Yuji 9
#8 Togashi Kensaku 9
#9 Oishi Hisao 8
#10 Ariyama Ichiro 8

Latest patents

Publication Filing date Title
JP2003179928A Dynamic image object extracting apparatus
JP2003132309A Semiconductor integrated circuit device and ic card
JP2003087754A Moving picture transmission system utilizing wireless channel
JP2003046530A Communication method among ip networks with different address spaces, and device with global ip address
JP2003037454A High-frequency power amplifier circuit
JP2003030121A Web sharing system and communication terminal of web sharing system
JP2003017954A High frequency power amplifier circuit
JP2003008412A Variable delay circuit and integrated circuit using the variable delay circuit
JP2003009111A Broadcasting equipment and receiver of commercial message and program information, and providing method of commercial message to viewer
JP2002373268A Recruiting/job hunting intermediating method and system therefor
JP2002368773A Address management method and address management relay device in multimedia communication
JP2002368824A Packet signal transmission system, packet signal transmission terminal and packet signal receiving terminal
JP2002341434A Projector controller and method and program for controlling projector
JP2002252715A Remote image supervisory system
JP2002243954A Package board, and method for holding optical cable on package board
JP2002229789A Program source file management method by multiple users on the same network and program source file management system
JP2002217965A Method and device for dynamically measuring bandwidth of ip network
JP2002217966A Method and device for dynamically controlling bandwidth in ip network
JP2002218089A Disconnection control method and disconnection control unit for dial-up communication
JP2002216272A Safety information providing method, safety information providing device, safety information communication terminal, safety monitoring system and storage medium