Tetsuya Sugiyama

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Soka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electric heating device for mirror
- Patent number 5,990,449
- Issue date Nov 23, 1999
- Pentel Kabushiki Kaisha
- Tetsuya Sugiyama
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Information input device
- Patent number 5,440,080
- Issue date Aug 8, 1995
- Pentel Kabushiki Kaisha
- Makoto Nagaoka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Mechanical pencil lead protection pipe with protuberance
- Patent number 5,085,534
- Issue date Feb 4, 1992
- Pentel Kabushiki Kaisha
- Kamakura Kenichi
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Thermal head and manufacturing method thereof
- Patent number 4,612,433
- Issue date Sep 16, 1986
- Pentel Kabushiki Kaisha
- Makoto Nagaoka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS