Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10082623 | Rib type optical waveguide and optical multiplexer / demultiplexer using same | Shigeru Nakamura | 2018-09-25 |
| 10079476 | Spark plug | — | 2018-09-18 |
| 9899805 | Method for manufacturing spark plug | Ryuichi Ohno | 2018-02-20 |