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HANDAN IRON & STEEL CO LTD

Overview
  • Total Patents
    22
About

HANDAN IRON & STEEL CO LTD has a total of 22 patent applications. Its first patent ever was published in 2001. It filed its patents most often in China. Its main competitors in its focus markets environmental technology are CHUNPING ZHANG, HISHINUMA MINORU and QINGCAI WANG.

Patent filings in countries

World map showing HANDAN IRON & STEEL CO LTDs patent filings in countries
# Country Total Patents
#1 China 22

Patent filings per year

Chart showing HANDAN IRON & STEEL CO LTDs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Qingshen Yang 3
#2 Zhigang Hu 3
#3 Zhumin Wang 2
#4 Guangmin Wei 2
#5 Yuyin Li 2
#6 Jia Fan 2
#7 Xiaoqing Chen 2
#8 Yanhua Zhao 2
#9 Zhigang Ren 2
#10 Hengguo Tang 2

Latest patents

Publication Filing date Title
CN101534079A Brushless excitation method and device for synchronization of wound rotor asynchronous motor
CN101534078A Rotating excitation method and device for synchronization of large wound rotor asynchronous motor
CN101308154A Converter steel-smelting molten steel continuous carbon determination method
CN101255541A Hot-rolled substrate continuous hot galvanizing productive technology
CN101235431A Convertor tapping washing fining furnace fast desulfurization method
CN101219340A A kind of treatment process of discharged doctor solution of HPF desulfurization system of coke-oven plant
CN101126110A Repairing method for reconstituted contact belt
CN101109027A Method for producing ball iron with iron scale
CN101109088A Technique for cleaning acid dirty of acid reactivating machine group inner loop type pipeline
CN101066815A Deep treatment process of metallurgical sewage
CN101077816A Highly effective sterilization metallurgy sewage treatment method
CN101066741A Multifunctional forcipated sling
CN101042313A Crosscutting shear collecting and sampling knife-changing combined unit
CN1943795A Method for preparing pig or cattle's bladder membrane type biological dressing used for treatment of burns
CN1927484A CSP production line cold rolling feed deformation system
CN1927485A Technique for CSP sheet billet production line cold rolling feeding
CN1909356A Synchronization throwing method and device for coiling type asynchronous motor
CN1873397A Method for identifying ore phase of sphere blockage mine, and rotator used by the method
CN1804047A Method for reclaiming and cyclic utilizing residue molten steel slag in steel making
CN1699223A Method of preparing pure water using metallurgic sewage