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HIRAI HIDEFUMI

Overview
  • Total Patents
    99
About

HIRAI HIDEFUMI has a total of 99 patent applications. Its first patent ever was published in 1977. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets environmental technology, chemical engineering and organic fine chemistry are GREENYUG LLC, SHANGHAI BI KE CLEAN ENERGY TECH CO LTD and SHANGHAI HUAYI ACRYLIC ACID CO.

Patent filings per year

Chart showing HIRAI HIDEFUMIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hirai Hidefumi 96
#2 Komiyama Makoto 66
#3 Hara Susumu 21
#4 Wada Keiichiro 13
#5 Wada Keiichirou 7
#6 Kurima Kazunori 6
#7 Ootsuka Yoshihisa 4
#8 Nakamura Tsutomu 4
#9 Sakai Kenji 4
#10 Toshima Naoki 4

Latest patents

Publication Filing date Title
JPH09290150A Novel composite, its preparation, and carbon monoxide adsorbing agent composed of the composite
JPH09290149A Novel carbon monoxide adsorbing agent
JPH09290152A New carbon monoxide-adsorbing agent
JPH09290153A New composite body, production thereof, and carbon monoxide-adsorbing agent consisting thereof
JPH08243386A Novel composite, its production and oxygen adsorbent made of same
JPH08243385A New composite, its production and olefin adsorbent made of same
JPH08243384A New composite, its production and olefin adsorbent made of the same
JPH07267893A Method for introducing carboxyl group into aryl compound having two aromatic groups
JPH06254390A Novel composite and its production and oxygen adsorbent consisting of this composite
US6051614A Method for preparing a non-aqueous dispersion of particles of a metal and/or a metal compound
JPH0648981A Method for introducing carboxyl group into aromatic carboxylic acid or its derivative
JPH05117200A Method for introducing carboxyl group to aromatic carboxylic acid or its derivative
US5187209A Colloidal metal dispersion, and a colloidal metal complex
JPH04122452A Metal particle and/or metal compound particle carrier and production thereof
JPS6420265A Immobilized product of polymer-protected metallic colloid and its production
JPS63283743A High-molecular protective metal colloid
US4888248A Colloidal metal dispersion, and a colloidal metal complex
JPS63202626A Production of polyparaphenylene
JPS63205140A Adsorbent for nitrogen monoxide and method for separating and removing nitrogen monoxide
JPS63100010A Adsorbent for separation of carbon monoxide