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KOREA TUNGSTEN CO LTD

Overview
  • Total Patents
    16
About

KOREA TUNGSTEN CO LTD has a total of 16 patent applications. Its first patent ever was published in 1993. It filed its patents most often in Republic of Korea, Japan and China. Its main competitors in its focus markets machine tools, machines and semiconductors are VALENITE LLC, FUTURMILL INC and O K TOOL CO INC.

Patent filings in countries

World map showing KOREA TUNGSTEN CO LTDs patent filings in countries
# Country Total Patents
#1 Republic of Korea 9
#2 Japan 3
#3 China 2
#4 United Kingdom 1
#5 United States 1

Patent filings per year

Chart showing KOREA TUNGSTEN CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Choi Chang Hee 3
#2 Park Man Gyo 3
#3 Park Hong-Sik 2
#4 Lee Kun-Woo 2
#5 Choe Duk-Soon 2
#6 Lee Sang Wook 2
#7 Cho Ki-Hong 2
#8 Kim Kwang-Joo 2
#9 Yan Hiyon 1
#10 Park Hong-Shik 1

Latest patents

Publication Filing date Title
JPH1060553A Production of cu-w alloy substrate for heat radiation plate of semiconductor element
JPH1046282A Cemented carbide for wristwatch and ornament
CN1172168A Ultra-hard alloy for wrist watch and decoration
KR0151894B1 Method for recovering tungsten from powder scrap
KR0151895B1 Pretreatment of cutting tool
KR0142934B1 Cemented tungsten carbide of wrist watch part
KR0149706B1 Free carbon analyzing method of carbonized tungsten
KR0120612B1 Throwaway type cutting insert
KR970008042B1 Method of manufacturing sintered alloy
KR970010912B1 Endmilling insert
KR970001524B1 Process for the preparation of silicon carbide powder
KR950013505B1 Cutting insert