TK

Takeshi Kawachi

NS Nippon Steel: 17 patents #85 of 4,423Top 2%
NM Nippon Steel & Sumitomo Metal: 5 patents #197 of 1,491Top 15%
OB Obayashi: 2 patents #32 of 118Top 30%
MS Meiki Seisakusho: 1 patents #29 of 62Top 50%
KC Kuraray Co.: 1 patents #981 of 1,827Top 55%
OH Ohbayashi-Gumi: 1 patents #5 of 34Top 15%
Overall (All Time): #149,584 of 4,157,543Top 4%
26
Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #TitleCo-InventorsDate
4551256 Slurry excavating method Daizo Kita, Tsutomu Nakamura 1985-11-05