HT

Hirotaka Tomizawa

TO Tonen: 13 patents #1 of 264Top 1%
TK Toa Nenryo Kogyo, K.K.: 8 patents #2 of 80Top 3%
EX ExxonMobil: 4 patents #2,507 of 10,161Top 25%
NC New Japan Chemical Co.: 3 patents #19 of 110Top 20%
TK Tonengeneral Sekiyu K.K.: 1 patents #6 of 32Top 20%
Overall (All Time): #132,671 of 4,157,543Top 4%
29
Patents All Time

Issued Patents All Time

Showing 26–29 of 29 patents

Patent #TitleCo-InventorsDate
4978468 Traction fluid Narihiko Yoshimura, Yasuji Komatsu 1990-12-18
4889650 Synthetic traction fluid Narihiko Yoshimura, Yasuji Komatsu 1989-12-26
4886613 Traction fluid Narihiko Yoshimura, Yasuji Komatsu 1989-12-12
4886614 Synthetic traction fluid Narihiko Yoshimura, Yasuji Komatsu 1989-12-12