Yuugo Kumagai

Follow

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Dry toner, dry developer and process for forming electrophotographi...
- Patent number 4,985,328
- Issue date Jan 15, 1991
- Hitachi Chemical Co., Ltd.
- Yuugo Kumagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner for developing electrostatic image comprising vinyl polymer h...
- Patent number 4,950,574
- Issue date Aug 21, 1990
- Hitachi Chemical Company, Ltd.
- Yuugo Kumagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophoto toner comprising imido group monomer unit in polymer
- Patent number 4,686,166
- Issue date Aug 11, 1987
- Hitachi Chemical Co.
- Yuugo Kumagai
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...