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MARUZEN OIL COMPANY LTD

Overview
  • Total Patents
    16
About

MARUZEN OIL COMPANY LTD has a total of 16 patent applications. Its first patent ever was published in 1962. It filed its patents most often in United Kingdom, Germany and United States. Its main competitors in its focus markets organic fine chemistry, chemical engineering and basic materials chemistry are CHEMISCHE VERWERTUNGSGESELLSCHAFT OBERHAUSEN MBH, OXEA GMBH and QI CHEM CO LTD.

Patent filings in countries

World map showing MARUZEN OIL COMPANY LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 7
#2 Germany 6
#3 United States 2
#4 France 1

Patent filings per year

Chart showing MARUZEN OIL COMPANY LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hasegawa Hiroshi 2
#2 Iriuchijima Makoto 2
#3 Komatsu Youji 2
#4 Taniguchi Hiroaki 1
#5 Masakazu Kawai 1
#6 Yokomizo Takashi 1
#7 Kenzo Kuihara 1
#8 Tamura Takeshi 1
#9 Fujii Kinya 1
#10 Yasuo Shimakawa 1

Latest patents

Publication Filing date Title
GB1272728A Improvements in the selective hydrogenation of poly-unsaturated hydrocarbons
GB1280749A Process for preparation of over-based sulphurized phenates
GB1237817A Process for production of pivalolactone
GB1218507A Improvements in the selective hydrogenation of poly-unsaturated hydrocarbons
GB1218154A Process for the production of carboxylic acids
GB1240889A Process for the production of methyl ethyl ketone
US3410897A Purification of terephthalic acid
GB962871A A process for the isomerization of xylenes