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NIPPON PETROLEUM REFINING CO

Overview
  • Total Patents
    118
About

NIPPON PETROLEUM REFINING CO has a total of 118 patent applications. Its first patent ever was published in 1970. It filed its patents most often in Japan, United States and Germany. Its main competitors in its focus markets basic materials chemistry, thermal processes and measurement are MIURA KOGYO KK, CN SHENHUA COAL LIQUID & CHEM and GREENVIRONMENT OY.

Patent filings per year

Chart showing NIPPON PETROLEUM REFINING COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Oyama Takashi 15
#2 Tano Tamotsu 11
#3 Yamaguchi Masahiro 9
#4 Niizawa Akihiko 8
#5 Nakanishi Kazuhisa 6
#6 Watanabe Yasuo 5
#7 Hashimoto Mitsuo 5
#8 Mama Fumio 5
#9 Higashi Keiji 4
#10 Oodan Akinori 4

Latest patents

Publication Filing date Title
JP2009264392A Pipe repairing tool
KR20100039333A Process for producing petroleum coke
JP2009243644A Flow distributor and flow distribution system
JP2009236181A Control valve
JP2009131810A Oil/water separator
JP2009085379A Pipe arrangement repairing implement
JP2009085378A Pipe arrangement repairing implement
JP2009015514A Pid control device
JP2009000655A Oil adsorbing material and its manufacturing method
JP2008221075A Cleaning method in piping system
JP2008196615A Sealing water device for sealing liquid spontaneous-supplying type mechanical seal
JP2008190685A Valve
JP2008139115A Nondestructive inspection method on multilayer body
JP2008063529A Method for operating heating furnace of delayed coker
JP2007330905A Oil adsorbent and purification method for oil-contaminated groundwater
JP2007216184A Oil adsorbing material and its manufacturing method
JP2007183114A Inspection method for deterioration of bellows
JP2008150399A Petroleum coke and method for producing the same
JP2008156376A Petroleum coke and method for producing the same
JP2007004769A Petroleum refinery parameter predicting device and parameter predicting method