KO

Katsumasa Ohtera

UN Unknown: 6 patents #2,010 of 83,584Top 3%
YK Yoshida Kogyo K.K.: 5 patents #86 of 468Top 20%
Overall (All Time): #886,838 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5967904 Golf club head Yoshitaka Nagai, Masaki Sato 1999-10-19
5405462 Superplastic aluminum-based alloy material and production process thereof Tsuyoshi Masumoto, Akihisa Inoue, Kenji Higashi, Makoto Kawanishi 1995-04-11
5332456 Superplastic aluminum-based alloy material and production process thereof Tsuyoshi Masumoto, Akihisa Inoue, Kenji Higashi, Makoto Kawanishi 1994-07-26
5279642 Process for producing high strength aluminum-based alloy powder 1994-01-18
5221375 Corrosion resistant aluminum-based alloy Junichi Nagahora, Kazuo Aikawa, Hideki Takeda, Keiko Yamagata 1993-06-22
5122205 Corrosion resistant aluminum-based alloy Tsuyoshi Masumoto, Akihisa Inoue, Junichi Nagahora, Kazuo Aikawa, Madoka Nakajima +1 more 1992-06-16