Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11342724 | Semiconductor optical integrated device | Keisuke Matsumoto, Eitaro Ishimura, Satoshi Nishikawa | 2022-05-24 |
| 9484708 | Dual wavelength laser module with constant output intensity | Tetsuhiro Fukao | 2016-11-01 |
| 7269349 | Method of and device for performing bi-directional transmission using a single-wire | Kaoru Kinjo, Takashi Mizuochi | 2007-09-11 |
| 7092643 | Optical transmission apparatus and bias voltage control method for the optical modulator | Kazuyuki Ishida, Katsuhiro Shimizu, Yukio Kobayashi | 2006-08-15 |
| 7068421 | Raman amplifier and optical relay transmission system | Toshiyuki Tokura, Taichi Kogure, Takashi Mizuochi | 2006-06-27 |
| 7057802 | Optical amplifier device | Katsuhiro Shimizu, Takahiko Itoh | 2006-06-06 |
| 7034993 | Optical amplifier apparatus | Katsuhiro Shimizu, Takahiko Itoh | 2006-04-25 |
| 7016614 | Optical wavelength division multiplexing transmission suppressing four-wave mixing and SPM-GVD effects | Katsuhiro Shimizu, Yukio Kobayashi, Takashi Mizuochi | 2006-03-21 |
| 6970650 | One-core two-way optical transmission system | Kaoru Kinjo, Takashi Mizuochi | 2005-11-29 |
| 5721331 | Isobutylene-based polymer and process of producing the same | Kenji Shachi, Kazushige Ishiura | 1998-02-24 |
| 5708103 | Process for producing a polymer of vinylic compounds | Kenji Shachi, Kazushige Ishiura | 1998-01-13 |