Tohru Nogiwa

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Numazu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Reversible thermosensitive recording medium and method of producing...
- Patent number 5,985,077
- Issue date Nov 16, 1999
- Ricoh Company, Ltd.
- Yukio Konagaya
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive recording material
- Patent number 5,869,421
- Issue date Feb 9, 1999
- Ricoh Company, Ltd.
- Atsushi Kutami
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method of producing reversible thermosensitive recording medium
- Patent number 5,762,998
- Issue date Jun 9, 1998
- Ricoh Company, Ltd.
- Yukio Konagaya
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive recording label and reversible thermosen...
- Patent number 5,643,851
- Issue date Jul 1, 1997
- Ricoh Company, Ltd.
- Yukio Konagaya
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Reversible thermosensitive recording medium and method of producing...
- Patent number 5,625,524
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Yukio Konagaya
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS