Ryuichi Iwamasa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Display apparatus
- Patent number 8,416,495
- Issue date Apr 9, 2013
- GK Tech Inc.
- Ryuichi Iwamasa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Presentation system
- Patent number 7,886,980
- Issue date Feb 15, 2011
- Uchida Yoko Co., Ltd.
- Yoshiaki Nishimura
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
Display Apparatus
- Publication number 20100328551
- Publication date Dec 30, 2010
- GK Tech Inc.
- Ryuichi Iwamasa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Presentation System
- Publication number 20070256017
- Publication date Nov 1, 2007
- UCHIDA YOKO CO., LTD.
- Yoshiaki Nishimura
- G06 - COMPUTING CALCULATING COUNTING