Katsuaki Kokubo

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Thermo reversible recording medium, member having information memor...
- Patent number 6,794,334
- Issue date Sep 21, 2004
- Ricoh Company, Ltd.
- Yoshihiko Hotta
- G11 - INFORMATION STORAGE
Information Patent Grant
Reversible thermosensitive recording medium, method of producing th...
- Patent number 6,489,265
- Issue date Dec 3, 2002
- Ricoh Company, Ltd.
- Yoshihiko Hotta
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive recording medium, card, label, disk, dis...
- Patent number 6,362,130
- Issue date Mar 26, 2002
- Ricoh Company, Ltd.
- Yoshihiko Hotta
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive recording medium, method of producing th...
- Patent number 6,174,836
- Issue date Jan 16, 2001
- Ricoh Company Ltd.
- Yoshihiko Hotta
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive coloring composition and reversible ther...
- Patent number 6,090,192
- Issue date Jul 18, 2000
- Ricoh Company, Ltd.
- Masafumi Torii
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive coloring composition and reversible ther...
- Patent number 5,955,225
- Issue date Sep 21, 1999
- Ricoh Company Ltd.
- Hiromi Furuya
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive composition and reversible thermosensiti...
- Patent number 5,942,377
- Issue date Aug 24, 1999
- Ricoh Company, Ltd.
- Masafumi Torii
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive recording medium
- Patent number 5,891,823
- Issue date Apr 6, 1999
- Ricoh Company Ltd.
- Masafumi Torii
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
Thermo reversible recording medium, member having information memor...
- Publication number 20020045546
- Publication date Apr 18, 2002
- Yoshihiko Hotta
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Katsuaki Kokubo

Person

Patents Grantslast 30 patents

Thermo reversible recording medium, member having information memor...

Reversible thermosensitive recording medium, method of producing th...

Reversible thermosensitive recording medium, card, label, disk, dis...

Reversible thermosensitive recording medium, method of producing th...

Reversible thermosensitive coloring composition and reversible ther...

Reversible thermosensitive coloring composition and reversible ther...

Reversible thermosensitive composition and reversible thermosensiti...

Reversible thermosensitive recording medium

Patents Applicationslast 30 patents

Thermo reversible recording medium, member having information memor...