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NIPPON KOSHUHA STEEL CO LTD

Overview
  • Total Patents
    165
  • GoodIP Patent Rank
    114,538
  • Filing trend
    ⇩ 50.0%
About

NIPPON KOSHUHA STEEL CO LTD has a total of 165 patent applications. It decreased the IP activity by 50.0%. Its first patent ever was published in 1993. It filed its patents most often in Japan, United States and China. Its main competitors in its focus markets materials and metallurgy, surface technology and coating and machine tools are TIANSHUN GROUP, SALZGITTER MANNESMANN PREC GMBH and ROVALMA SA.

Patent filings per year

Chart showing NIPPON KOSHUHA STEEL CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Imai Katsuya 27
#2 Yoshida Junji 13
#3 Onaka Toshiki 12
#4 Hayashida Keiichi 12
#5 Okamoto Hiroshi 12
#6 Furusawa Sadayoshi 11
#7 Tonomura Tsuyoshi 11
#8 Mizuno Yukitaka 10
#9 Nakada Mitsuaki 9
#10 Takashima Toshiaki 8

Latest patents

Publication Filing date Title
JP2018203585A Magnetostrictive member and method for manufacturing the same
JP2016138028A Magnetostrictive member and manufacturing method therefor
JP2016089260A Hot tool steel
JP2015168850A Steel for high mirror surface plastic mold
JP2015086399A Cutlery steel for ultrasonic vibration cutter and processing blade for ultrasonic vibration cutter
CN103476963A Press forming die, and method of manufacturing press forming die protection film
JP2013047367A Method for producing ultrafine wire of high-strength stainless steel
JP2012219367A Non-magnetic stainless steel
JP2012214833A Cold tool steel
JP2007077442A Cold working tool steel and manufacturing method therefor
JP2006213990A Manufacturing method of hot working die
JP2005350690A Cold forged component having excellent toughness and wear resistance, and its manufacturing method
JP2005314744A Material for piston ring and piston ring obtained by using the material
JP2005272977A Low alloy steel
JP2005272899A Tool steel having self-lubricity
JP2005256046A Apparatus for transferring liquid and acid liquid
JP2005113161A Hot tool steel
JP2005060812A Ferritic free cutting stainless steel
JP2004276083A Method for manufacturing wire by cold drawing from high speed tool steel
JP2004256842A Steel material superior in machinability and manufacturing method therefor