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NIPPON KOKAN KK

Overview
  • Total Patents
    35,770
About

NIPPON KOKAN KK has a total of 35,770 patent applications. Its first patent ever was published in 1951. It filed its patents most often in Japan, United States and Canada. Its main competitors in its focus markets materials and metallurgy, environmental technology and machine tools are KAWASAKI STEEL CO, PO HANG IRON & STEEL and CENTRE RECH METALLURGIQUE.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Yamashita Masaaki 469
#2 Sagiyama Masaru 364
#3 Sugitani Yuji 337
#4 Ishii Toshio 294
#5 Iwasaki Katsuhiro 289
#6 Tanabe Haruyoshi 279
#7 Nishio Hiroaki 263
#8 Inoue Tadashi 258
#9 Hosoya Yoshihiro 252
#10 Sugiyama Shunichi 252

Latest patents

Publication Filing date Title
US2003188559A1 Plate reduction press apparatus and methods
WO03064079A1 Immersion nozzle for continuous casting of steel and continuous casting method of steel
JP2003160527A Method for producing dimethyl ether
JP2003161716A Paint film damage detecting device for buried painted steel pipe
CN1481346A Raw material for silicate phosphate fertilizer and method for prodn thereof
JP2003145203A Method for manufacturing hot-rolled steel strip
JP2003136123A Rolling method and apparatus of hot rolled steel strip
JP2003096536A Ultrahigh tensile strength electric resistance welded tube
JP2003138316A Method of producing ultrahigh tensile strength electric resistance welded tube
JP2003145214A Method for controlling cooling of hot-rolled strip
JP2003145212A Cooling control method of hot-rolled steel strip
JP2003177066A Method for evaluating stress of bend pipe
JP2003145537A Method for recycling expanded styrol resin
JP2003100523A Low-noise laminated core and wound core using high- silicon steel plate
JP2003167620A Production plan change support system
TW536455B Surface treating apparatus and manufacturing method of metal sheet
JP2003155825A Plastic board using spent plastic as raw material and its manufacturing method
JP2003161692A Life prediction method of coated steel material around photovoltaic power generation system, coated steel material around photovoltaic power generation system, and photovoltaic power generation system
JP2003117654A Welding method and welded part
JP2003105555A Surface treated steel sheet having excellent white rust resistance, and production method therefor