Inventor
YAMAKAWA GOICHI
JP10 patents
⚠️ This page may combine multiple inventors who share the name “YAMAKAWA GOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KONISHIROKU PHOTO IND
9 patentsUS4657837AApr 14, 1987
Toner for developing an electrostatically charged image
KONISHIROKU PHOTO IND33 citations92
US4514487AApr 30, 1985
Method for manufacturing toner for electrophotography
KONISHIROKU PHOTO IND26 citations81
US4473628ASep 25, 1984
Toner for developing of electrostatic latent image
KONISHIROKU PHOTO IND18 citations81
US4572885AFeb 25, 1986
Developer composition for developing an electrostatic image
KONISHIROKU PHOTO IND9 citations73
US4518674AMay 21, 1985
Developing material for electrophotography, process for preparation
KONISHIROKU PHOTO IND13 citations73
US4564573AJan 14, 1986
Electrostatic image forming toner
KONISHIROKU PHOTO IND8 citations72
US4623604ANov 18, 1986
Triboelectric stabilized toner for developing electrically charged images and a method for the production thereof
KONISHIROKU PHOTO IND12 citations69
US4287283ASep 1, 1981
Iron powder developing carrier and the manufacturing method of the same, developer containing said carrier and method of forming visible image by using said developer
KONISHIROKU PHOTO IND3 citations62
US4107062AAug 15, 1978
Toner for developing electrostatic latent images comprising an amine-epoxy resin mixture
KONISHIROKU PHOTO IND3 citations62