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NTT CO LTD

Overview
  • Total Patents
    14
About

NTT CO LTD has a total of 14 patent applications. Its first patent ever was published in 1996. It filed its patents most often in WIPO (World Intellectual Property Organization), Taiwan and China. Its main competitors in its focus markets materials and metallurgy, thermal processes and basic communication technologies are BIPROHUT, LECTROTHERM INC and SHENYANG GUANGTAI VACUUM TECH CO LTD.

Patent filings in countries

World map showing NTT CO LTDs patent filings in countries

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Ko Dong Geun 7
#2 Ko Dong-Geun 4
#3 Shutai Agano 1
#4 Kiastsu Uchiyama Masashi Miyam 1
#5 Hirousi Yube Masao Tatanaga Si 1
#6 Kazuji Watanabe 1

Latest patents

Publication Filing date Title
WO2011052839A1 Die-casting device
WO2010147266A1 Vacuum die casting method for light metal and apparatus thereof
WO2011027930A1 Light-metal vacuum melting device employing electromagnetic stirring, and a vacuum melting method employing the same
WO2011027929A1 Vacuum melting device for light metals and a vacuum melting method employing the same
WO2011027928A1 Metal-material-charging device for vacuum melting and a method for the same
WO2010050676A2 Vacuum melting apparatus for a light metal, and vacuum melting method using same
WO2010041830A2 Vacuum system for vacuum melting and casting metal, and vacuum melting and casting method using same