Yasuhiro Maruyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Substrate for producing semiconductor device, method for producing...
- Patent number 6,281,427
- Issue date Aug 28, 2001
- Digital Wave Inc.
- Maruyama Mitsuhiro
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Crystal producing method and apparatus therefor
- Patent number 6,001,175
- Issue date Dec 14, 1999
- Mitsuhiro Maruyama
- C30 - CRYSTAL GROWTH
Information Patent Grant
Karaoke authoring apparatus
- Patent number 5,453,570
- Issue date Sep 26, 1995
- Ricoh Co., Ltd.
- Toshihiko Umeda
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS