Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11269138 | Single mode optical fiber and manufacturing method thereof | — | 2022-03-08 |
| 7886561 | Method for drawing glass parent material and drawing machine for use therein | Sumio Hoshino | 2011-02-15 |
| 6892019 | Optical fiber, method of making optical fiber preform, and method of making optical fiber | Katsuya Nagayama, Takatoshi Kato | 2005-05-10 |
| 6681072 | Optical fiber, method of making optical fiber preform, and method of making optical fiber | Katsuya Nagayama, Takatoshi Kato | 2004-01-20 |