Haruhiko Ohsawa

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing reversible heat-sensitive recording medium...
- Patent number 6,375,784
- Issue date Apr 23, 2002
- Kyodo Printing Co., Ltd.
- Haruhiko Ohsawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible heat-sensitive recording material with high color develo...
- Patent number 6,001,518
- Issue date Dec 14, 1999
- Kyodo Printing Co., Ltd.
- Haruhiko Ohsawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thermal recording medium
- Patent number 5,294,587
- Issue date Mar 15, 1994
- Kyodo Printing Co., Ltd.
- Shigeru Nakagami
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS