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YOZAN INC

Overview
  • Total Patents
    557
About

YOZAN INC has a total of 557 patent applications. Its first patent ever was published in 1988. It filed its patents most often in United States, EPO (European Patent Office) and Japan. Its main competitors in its focus markets telecommunications, computer technology and basic communication technologies are ASIA PACIFIC SATELLITE COMM INC, KOREA TELECOM FREETEL CO LTD and DOWON TELECOM CO LTD.

Patent filings per year

Chart showing YOZAN INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Takatori Sunao 289
#2 Yamamoto Makoto 194
#3 Shou Guoliang 155
#4 Kiyomatsu Hisanori 106
#5 Zhou Changming 103
#6 Suzuki Kunihiko 44
#7 Motohashi Kazunori 41
#8 Zhou Xuping 35
#9 Yang Weikang 33
#10 Kumagai Ryohei 32

Latest patents

Publication Filing date Title
JP2008005178A Digital communication method and digital communication system
JP2007288458A Portable terminal and position monitoring system provided with the portable terminal
JP2007074581A Terminal
JP2006005530A System for confirming safety of person living alone, information processor and housing monitoring method for person living alone
JP2005244901A Information browsing method, program, and customer management center
JP2004165848A Pager receiver and tool for inspecting pager receiver
JP2004135231A Mobile terminal equipment, mobile system controller, and prepaid mobile system controller
JP2004133844A Mobile terminal device, service providing terminal and ic card system
JP2004133848A Mobile terminal device and ic card system
JP2004133747A Authentication system and authentication method
JP2004129905A System and method for managing somatic information, and radio communication equipment
JP2004088336A Communication system
JP2004056701A Information receiving apparatus
JP2004040608A Pager terminal
JP2004040572A Pager receiver
JP2003250185A Mobile communication terminal, charging server, mobile communication system and control program
JP2004032505A Communication system
JP2003348228A Network communication management device, communication device and network communication management system of communication device
JP2003348266A Communication system
JP2003333037A Electronic document transceiver and electronic document transceiver system