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.
# | Country | Total Patents | |
---|---|---|---|
#1 | WIPO (World Intellectual Property Organization) | 7 | |
#2 | Taiwan | 4 | |
#3 | China | 3 |
# | Industry | |
---|---|---|
#1 | Materials and metallurgy | |
#2 | Thermal processes | |
#3 | Basic communication technologies | |
#4 | Computer technology | |
#5 | Optics |
# | Technology | |
---|---|---|
#1 | Casting metal | |
#2 | Furnaces | |
#3 | Metal production and refining | |
#4 | Pig-iron processing | |
#5 | Electric digital data processing | |
#6 | Amplifiers | |
#7 | Nonlinear optics | |
#8 | Details of furnaces |
# | 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 |
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 |