KO

Keizo Oka

SC Shikoku Chemicals: 2 patents #31 of 89Top 35%
CH Chisso: 1 patents #468 of 833Top 60%
Overall (All Time): #1,653,599 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5290497 Process for producing molded articles of polyimide precursor Mitsuo Kurita, Kazutsune Kikuta 1994-03-01
5064631 Process for preparation of aluminum borate whisker Hajime Hata, Hajime Kambara, Seiji Sogabe 1991-11-12
5061468 Process for preparation of aluminum borate whisker Hajime Hata, Seiji Sogabe 1991-10-29