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NIPPON KOYU KK

Overview
  • Total Patents
    52
About

NIPPON KOYU KK has a total of 52 patent applications. Its first patent ever was published in 1974. It filed its patents most often in Japan. Its main competitors in its focus markets basic materials chemistry, organic fine chemistry and environmental technology are CHUO KAGAKU KOGYO KK, HANANO COMMERCIAL CO LTD and COOPER LTD ETHYL.

Patent filings in countries

World map showing NIPPON KOYU KKs patent filings in countries
# Country Total Patents
#1 Japan 52

Patent filings per year

Chart showing NIPPON KOYU KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Takano Noritoki 10
#2 Yokoya Toshiji 8
#3 Matsumoto Kazuhiro 8
#4 Takemura Kunio 7
#5 Nakamura Minoru 4
#6 Nakayama Tomio 4
#7 Nishida Yoshirou 4
#8 Saito Takashi 3
#9 Kikuma Isohachi 3
#10 Kimura Yasuhiro 3

Latest patents

Publication Filing date Title
JP2005246626A Backflow inhibitor composition of ink for ballpoint pen
JP2005239933A Reverse flow preventing agent composition for ballpoint pen ink
JP2004091711A Grease composition
JP2004059010A Flexible container
JP2003103986A Ink backflow inhibitor composition for ball-point pen
JP2003095355A Grease filling container
JP2003073682A Grease composition
JP2002265969A Grease composition
JP2000328086A Sticky lubricating composition
JP2000109874A Non-diffusive fluorine grease composition
JP2000104091A Grease for sliding contact
JPH11131086A Lubricating grease composition
JPH1135963A Lubricating grease composition
JPH1112587A Lubricant
JPH10315680A Ink backflow preventive agent composition for ballpoint pen
JPH10279983A Lubricant
JPH10204468A Bearing grease composition for abs pump
JPH10204469A Bearing grease for fan
JPH0976687A Composition for ball-point pen ink reverse-flow preventive agent
JPH07173483A Sound-deadening grease composition