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Nobuo Yamada
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Numazu, JP
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last 30 patents
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Patent Grant
Reversible thermosensitive recording material
Patent number
6,060,425
Issue date
May 9, 2000
Ricoh Company, Ltd.
Kunichika Morohoshi
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
Card processing method
Patent number
5,321,239
Issue date
Jun 14, 1994
Ricoh Company, Ltd.
Fumihito Masubuchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of compensating for distortion in recording layer in reversi...
Patent number
5,310,718
Issue date
May 10, 1994
Ricoh Company, Ltd.
Tetsuya Amano
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS