TI

Tooru Ishijima

OC Ohto Co.: 1 patents #3 of 8Top 40%
📍 Soma, JP: #357 of 570 inventorsTop 65%
Overall (All Time): #3,666,655 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5980765 Method of manufacturing composite ceramics balls for ball-point pens Takao Machida 1999-11-09