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TOKYO GAS CO LTD

Overview
  • Total Patents
    10,617
  • GoodIP Patent Rank
    1,593
  • Filing trend
    ⇧ 58.0%
About

TOKYO GAS CO LTD has a total of 10,617 patent applications. It increased the IP activity by 58.0%. Its first patent ever was published in 1965. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets environmental technology, mechanical elements and measurement are OSAKA GAS CO LTD, BEIJING BOLU HYDROGEN ENERGY TECH DEVELOPMENT CO LTD and HERA HYDROGEN STORAGE SYSTEMS.

Patent filings per year

Chart showing TOKYO GAS CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Nukui Kazumitsu 479
#2 Sakai Katsuto 239
#3 Satake Yukinobu 214
#4 Matsuzaki Yoshio 197
#5 Sato Shinichi 189
#6 Tanaka Takashi 181
#7 Suzuki Mamoru 165
#8 Fujisawa Kazuya 154
#9 Yagi Shuichi 150
#10 Furukawa Hideki 146

Latest patents

Publication Filing date Title
WO2021060186A1 Calorimeter and calorimetry method
JP2021001110A Carbon dioxide supply system
WO2021015056A1 Methane production apparatus, methane production method, carbon dioxide recovery device, and carbon dioxide recovery method
WO2021053944A1 Fuel cell unit, fuel cell system, and carbon dioxide recovery method
JP2020119907A Fuel cell system
JP2020116577A Desulfurizer for fuel gas
JP2020076785A Gas meter replacement work support device, gas meter replacement work support method and program
JP2020064882A Fuel battery system
JP2020095945A Fuel cell device, control program, and method for controlling fuel cell device
JP2020012825A Purge monitoring device and monitoring control device
JP2021005521A Impedance distribution measuring method
JP2021005144A Commercial product management system
JP2021004144A Hydrogen production apparatus
JP2021004143A Hydrogen production apparatus
JP2021002124A Invoice issuance management control device and invoice issuance management control program
JP2020204436A Combustion system and measurement device
JP2020204438A Combustion system and measurement device
JP2020204437A Combustion system, terminal device, and program
JP2020201844A System and program for determining operational suitability
JP2020202136A Fuel cell system