Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D327309 | Golf club shaft | — | 1992-06-23 |
| 5088735 | Shaft structure of golf club and production method of the shaft | — | 1992-02-18 |
| 5071687 | Laminated tubes and method of manufacturing the same | — | 1991-12-10 |
| 5028464 | Structure of golf club shaft and method of producing the shaft | — | 1991-07-02 |