TO

Toshiki Okumura

TO Topcon: 2 patents #309 of 684Top 50%
TC Toyo Seikan Co.: 2 patents #321 of 888Top 40%
Overall (All Time): #1,154,638 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
D915905 Can Kiyosumi Manita 2021-04-13
D863068 Can Kiyosumi Manita 2019-10-15
5673135 Scanning projection optical device Hisakazu Yoshino, Takuji Satoh 1997-09-30
5448416 Wide-field exposure optical system Hisakazu Yoshino, Takuji Satoh 1995-09-05