Ohtsuka; Tomoyuki
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ohtsuka; Tomoyuki.The latest application filed is for "coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission method".
- Ohtsuka; Tomoyuki - Yokohama JP
- Ohtsuka; Tomoyuki - Kawasaki JP
| Patent | Date |
|---|---|
| Coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission method Grant 7,831,118 - Oikawa , et al. November 9, 2 | 2010-11-09 |
| Coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission method App 20050220397 - Oikawa, Yoichi ; et al. | 2005-10-06 |
| Circuit for generating discrimination voltage level Grant 5,001,726 - Kawai , et al. March 19, 1 | 1991-03-19 |
| Phase shift circuit Grant 4,935,701 - Kawai , et al. June 19, 1 | 1990-06-19 |
| Drop/insert processing circuit Grant 4,935,920 - Taniguchi , et al. June 19, 1 | 1990-06-19 |
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