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Akishima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor memory device with improved substrate arrangement to...
- Patent number 5,805,513
- Issue date Sep 8, 1998
- Hitachi, Ltd.
- Yasushi Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for fabricating phase shift mask and process of semiconduct...
- Patent number 5,677,092
- Issue date Oct 14, 1997
- Hitachi, Ltd.
- Toshitsugu Takekuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for fabricating phase shift mask and process of semiconduct...
- Patent number 5,441,834
- Issue date Aug 15, 1995
- Hatachi, Ltd.
- Toshitsugu Takekuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Semiconductor memory device with improved substrate arrangement to...
- Patent number 5,426,613
- Issue date Jun 20, 1995
- Hitachi, Ltd.
- Yasushi Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device with improved substrate arrangement to...
- Patent number 5,217,917
- Issue date Jun 8, 1993
- Hitachi, Ltd.
- Yasushi Takahashi
- G11 - INFORMATION STORAGE