Tetsurou Ikegaki

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Tokushima-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical data recording system and method of production of recording...
- Patent number RE37719
- Issue date May 28, 2002
- Toshinori Sugiyama
- 428 - Stock material or miscellaneous articles
Information Patent Grant
Optical data recording system and method of production of recording...
- Patent number 4,876,133
- Issue date Oct 24, 1989
- Hitachi Maxell, Ltd.
- Toshinori Sugiyama
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Information recording disc
- Patent number 4,733,388
- Issue date Mar 22, 1988
- Hitachi Maxell, Ltd.
- Nobuyuki Fujimoto
- G11 - INFORMATION STORAGE