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SUMITOMO SEIKA CHEMICALS

Overview
  • Total Patents
    3,545
  • GoodIP Patent Rank
    1,414
  • Filing trend
    ⇧ 92.0%
About

SUMITOMO SEIKA CHEMICALS has a total of 3,545 patent applications. It increased the IP activity by 92.0%. Its first patent ever was published in 1988. It filed its patents most often in Japan, WIPO (World Intellectual Property Organization) and China. Its main competitors in its focus markets macromolecular chemistry and polymers, medical technology and chemical engineering are LOTTE CHEMICAL CORP, SHANDONG HUAXIA SHENZHOU NEW MAT CO LTD and SOLVAY SPECIALTY POLYMERS IT.

Patent filings per year

Chart showing SUMITOMO SEIKA CHEMICALSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yamamoto Katsumasa 170
#2 Handa Masayoshi 169
#3 Takatori Junichi 152
#4 Fujimoto Nobutaka 145
#5 Suzuki Michio 141
#6 Fujita Koji 139
#7 Haruna Kazuo 136
#8 Nawata Yasuhiro 132
#9 Hata Hiroyuki 131
#10 Yokoyama Hideki 129

Latest patents

Publication Filing date Title
WO2021075508A1 Absorbent article and auxiliary sheet
WO2021075506A1 Method for regenerating water-absorbing resin particles
WO2021075507A1 Absorber
WO2021075459A1 Deodorant composition, absorber, and absorbent article
WO2021075458A1 Deodorant composition, absorbent, and absorbent article
WO2021075460A1 Deodorizer composition, absorbing body, and absorbent article
WO2021049631A1 Liquid leakage inhibitor used in absorbent containing water absorbent resin particles, and water absorbent resin particles
WO2021049493A1 Method for producing water-absorbent resin particles
WO2021049487A1 Water absorbent resin particles, absorbent article, and production method for water absorbent resin particles
WO2021049488A1 Water-absorbing resin particles and absorbent article
WO2021049467A1 Method for producing crosslinked polymer particles, and crosslinked polymer gel
WO2021049465A1 Method for improving amount of water absorption under load, method for manufacturing cross-linked polymer particles, and method for manufacturing water-absorbing resin particles
WO2021049451A1 Method for producing water-absorbable resin particles
WO2021049450A1 Water absorbent resin particles
WO2021049466A1 Production method for cross-linked polymer particles, production method for water-absorbent resin particles, and method for improving water absorption under load
WO2021039714A1 Absorbent article and auxiliary sheet
WO2021039713A1 Absorbent article and auxiliary sheet
WO2021039715A1 Water-absorbing sheet and absorbent article
WO2021033589A1 Battery separator, nonaqueous electrolyte battery, electrical device, and coating agent
WO2021029337A1 Graft copolymer, method for producing graft copolymer and use of same