YK

Yoshihisa Kozawa

PC Petroleum Energy Center: 1 patents #1 of 3Top 35%
SK Showa Shell Sekiyu K.K.: 1 patents #1 of 8Top 15%
Overall (1997): #55,971 of 185,788Top 35%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5677259 Gas oil desulfurization catalyst and desulfurization method Osamu Yamase, Masao Inoguchi 1997-10-14