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YAMAMOTO CHEMICALS INC

Overview
  • Total Patents
    387
  • GoodIP Patent Rank
    21,927
  • Filing trend
    ⇧ 100.0%
About

YAMAMOTO CHEMICALS INC has a total of 387 patent applications. It increased the IP activity by 100.0%. Its first patent ever was published in 1984. It filed its patents most often in Japan, WIPO (World Intellectual Property Organization) and EPO (European Patent Office). Its main competitors in its focus markets basic materials chemistry, organic fine chemistry and textiles and paper are DYE WORKS FORMERLY L DURAND HUGUENIN & CO, KALLE AND COMPANY AG and CASSELLA COLOR COMPANY.

Patent filings per year

Chart showing YAMAMOTO CHEMICALS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Matsumoto Mansuke 78
#2 Nakatsuka Masakatsu 68
#3 Fujita Shigeo 65
#4 Wada Sayuri 57
#5 Kumagai Yojiro 53
#6 Iwasaki Yasuhisa 51
#7 Masaoka Toshihiro 46
#8 Sawano Bunji 40
#9 Yamamoto Masato 38
#10 Horiuchi Kenichiro 32

Latest patents

Publication Filing date Title
WO2020071470A1 Phthalocyanine compound and use thereof
JP2019196493A Liquid resin composition for active ray-curable adhesive
JP2019215533A Anti-glare optical article
JP2020164568A Amorphous form of phthalide based salt structure compound, and manufacturing method and use thereof
JP2020007383A Resin composition and molding
JP2019220642A Organic transistor
JP2019214691A Dichroic compound, liquid crystal composition, and liquid crystal element
WO2018198920A1 Compound and ink using same
WO2018198919A1 Compound and ink using same
WO2018194002A1 Triarylmethane-based compound
WO2018186489A1 Phthalocyanine compound and use of same
US2021107924A1 Naphthalocyanine compound, method for producing same, and use thereof
WO2018135652A1 Ink composition for ptp package, and ink
JP2019006739A Method for producing thiophene compound
JP2018182056A Organic transistor
JP2018154704A Dichroic compound, liquid crystal composition and liquid crystal element
JP2018154705A Dichroic compound, liquid crystal composition and liquid crystal element
JP2018150285A Method for producing isatin compound
JP2018135313A Method of producing quinophthalone compound
JP2018123096A Dichroic compound, liquid crystal composition and liquid crystal element