Ryuichi Watanabe

Follow

Person

Zushi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Bidirectional optical transmission system
- Patent number 5,608,565
- Issue date Mar 4, 1997
- Nippon Telegraph & Telephone Corporation
- Yasuhiro Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Point-to-multipoint optical transmission system
- Patent number 5,539,564
- Issue date Jul 23, 1996
- Nippon Telegraph & Telephone Corporation
- Kiyomi Kumozaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE