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MARUZEN PETROCHEM CO LTD

Overview
  • Total Patents
    820
  • GoodIP Patent Rank
    9,218
  • Filing trend
    ⇧ 155.0%
About

MARUZEN PETROCHEM CO LTD has a total of 820 patent applications. It increased the IP activity by 155.0%. Its first patent ever was published in 1966. It filed its patents most often in Japan, United States and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets macromolecular chemistry and polymers, organic fine chemistry and optics are CHEN LINFENG, HYUNDAI PETROCHEMICAL CO LTD and YINGKOU XIANGYANG CATALYST CO LTD.

Patent filings per year

Chart showing MARUZEN PETROCHEM CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yamagishi Takanori 65
#2 Maruyama Isao 64
#3 Omori Hideki 63
#4 Tsuchitani Masatoshi 59
#5 Yoshida Norihiro 56
#6 Sugihara Shinji 44
#7 Haba Kazuhiko 39
#8 Takemori Toshifumi 35
#9 Nakajima Ryoichi 33
#10 Takahashi Eiji 33

Latest patents

Publication Filing date Title
WO2021065982A1 Crosslinked polymer for resist
WO2021045041A1 Core-shell-type polymer fine particles having phosphonic acid or phosphonic acid ester structure, particle dispersion, molded article, and method for producing said fine particles
WO2021029310A1 Polymer and method for producing same, and resin composition for resists
US2021024690A1 Method for producing acid-decomposable polymer
WO2020196448A1 Method for producing phosphorus compound
WO2020138230A1 Porous film of polyvinylidene fluoride resin and method for manufacturing same
WO2020129875A1 Method for producing polyvinylphosphonic acid copolymer
WO2020129611A1 Polymer having hydrophilic protecting group for resists
WO2020111031A1 Method for producing divinyl ether compound having alkylene skeleton
WO2020111030A1 Method for producing divinyl ether compound having alkylene skeleton
KR20210032381A How to treat draw solute, draw solution, and permeable water
WO2019189296A1 Method for deodorizing hydrogenated petroleum resin, and method for producing hydrogenated petroleum resin
CN111936529A Method for producing hydrogenated petroleum resin
JP2020158409A Method for producing phosphonic acid derivative
WO2019171958A1 New bifunctional (meth)acrylate compound and polymer
CN112041353A Novel difunctional (meth) acrylate compounds and polymers
WO2020170295A1 Method for producing vinyl ether polymer using onium salt
JP2020015800A Curable resin composition improved in flame retardancy and cured product thereof
US2021122867A1 Protein adsorption preventing agent, protein adsorption preventing film, and medical tool using same
US2020385498A1 Production method for hydrogenated petroleum resin