KO

Kouki Ohtsuka

HI Hitachi: 2 patents #13,388 of 28,497Top 50%
Nissan Motor Co.: 2 patents #3,090 of 8,689Top 40%
📍 Tochigi, JP: #1,324 of 2,789 inventorsTop 50%
Overall (All Time): #2,307,351 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5106578 Cast-to-near-net-shape steel body of heat-resistant cast steel Kimio Kubo, Koichi Akiyama, Masahide Ike, Kunio Kawai 1992-04-21
5091147 Heat-resistant cast steels Kimio Kubo, Koichi Akiyama, Masahide Ike, Kunio Kawai 1992-02-25