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MARUYASU & CO LTD

Overview
  • Total Patents
    195
  • GoodIP Patent Rank
    97,239
  • Filing trend
    ⇩ 100.0%
About

MARUYASU & CO LTD has a total of 195 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 1991. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets thermal processes, surface technology and coating and environmental technology are SENIOR UK LTD, VALEO TERMICO SA and BORGWARNER EMISSIONS SYSTEMS SPAIN SLU.

Patent filings per year

Chart showing MARUYASU & CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Sakakibara Yasufumi 47
#2 Harada Shigeki 30
#3 Takehara Kazuyuki 18
#4 Kato Katsutoshi 10
#5 Hirano Yoshihiro 9
#6 Ueno Haruhiko 8
#7 Yoshida Yuichiro 8
#8 Oyama Masaharu 7
#9 Nakajima Junichi 7
#10 Mizuno Eiji 7

Latest patents

Publication Filing date Title
JP2020144007A Automatic filtration device
JP2019090620A Bubble detection device and bubble detection method
JP2019027624A Multitubular exhaust heat recovery heat exchanger
JP2019011695A Fuel delivery pipe, and plating method for applying plating only to inner peripheral part og sensor fitting plug of fuel delivery pipe
JP2018159302A Fuel delivery pipe
JP2018091203A Fuel delivery pipe
JP2018059692A Total heat exchanger
JP2018048354A Manufacturing method of heat exchanger of automotive exhaust system
JP2017223213A Heating type fuel delivery pipe
JP2017087225A Product manufacturing method and high-pressure piping manufactured by the same
JP2017032011A Connection structure of pipe and hose
JP2016223614A Connection structure for pipe and hose
JP2016020685A High-pressure fuel delivery pipe assembly for direct-fuel-injection engine
JP2015129459A Internal combustion engine fuel supply device
JP2015117668A High-pressure fuel delivery pipe assembly for direct gasoline injection engine
JP2015102194A High-pressure metal piping having connecting head
JP2015094529A Multi-tube heat exchanger
JP2015055189A Filter mounting structure of internal combustion engine
JP2015034533A High pressure fuel delivery pipe for direct-injection engine
JP2015001349A Multitubular heat exchanger