Inventor
KUMAKURA TOSHIO
5 patents
⚠️ This page may combine multiple inventors who share the name “KUMAKURA TOSHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI METALS LTD
4 patentsUS4342282AAug 3, 1982
Toner cartridge
HITACHI METALS LTD46 citations91
US4189390AFeb 19, 1980
One-component magnetic developer powder for developing electrostatic latent image and method of making same
HITACHI METALS LTD14 citations73
US4865936ASep 12, 1989
Electrophotographic reversal development method using magnetic field and specified development gap
HITACHI METALS LTD6 citations61
US4482623ANov 13, 1984
Preparation method of magnetic toner
HITACHI METALS LTD5 citations59