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MAEZAWA KOGYO

Overview
  • Total Patents
    708
  • GoodIP Patent Rank
    20,187
  • Filing trend
    ⇩ 72.0%
About

MAEZAWA KOGYO has a total of 708 patent applications. It decreased the IP activity by 72.0%. Its first patent ever was published in 1974. It filed its patents most often in Japan, Republic of Korea and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets environmental technology, chemical engineering and mechanical elements are ERNEST HARTLEY, JAPAN SEWAGE WORKS AGENCY and WASSERTECH FORSCHUNG.

Patent filings per year

Chart showing MAEZAWA KOGYOs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Suzuki Tatsuhiko 75
#2 Odaka Shiro 70
#3 Ishikawa Susumu 40
#4 Kaneda Ichiji 39
#5 Yoshino Masaaki 36
#6 Kazui Toru 33
#7 Maezawa Keiji 33
#8 Yasuda Masato 33
#9 Araki Mikio 29
#10 Otaki Naokazu 27

Latest patents

Publication Filing date Title
JP2020073812A Air valve
JP2020195976A Water treatment equipment and method
JP2019162632A Apparatus for separating and dehydrating sewage sludge
JP2020192489A Wastewater treatment apparatus
JP2020189273A Ozone contact reaction tank
JP2020169064A Chain link for sludge scraper
JP2020134559A Observation device, observation method and program
JP2020125840A Check valve
JP2020121293A Sedimentation basin
JP2020121292A Sedimentation basin
JP2020081960A Sedimentation basin
JP2020075224A Sewage treatment device and method of sewage treatment
JP2020065972A Sedimentation basin
JP2019076887A Waste water treatment apparatus and waste water treatment method
JP2019210962A Butterfly valve, braking method for valve rod included in butterfly valve, and fitting member
JP2019108963A Opening meter, fluid control device including the same, and control method of the same
JP2019090244A Fluid control device
JP2019086044A Repair valve and assembly method thereof
JP2019063776A Methane fermentation tank
JP2018001168A Sludge sweep machine