Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989625 | Stably-retained automatic umbrella | — | 1991-02-05 |
| 4986294 | Automatic umbrella having smoothly-operating springs | — | 1991-01-22 |
| 4941494 | Lightly-operating automatic umbrella for preventing false operation | — | 1990-07-17 |
| 4936332 | Simply-constructed automatic umbrella for preventing false operation | — | 1990-06-26 |
| 4934395 | Short fold rib linkage for an umbrella | — | 1990-06-19 |
| 4838290 | Slimly-folded umbrella having extendible brim portion | — | 1989-06-13 |
| 4627455 | Umbrella rib linkage system | Toshio Okuda | 1986-12-09 |
| 4422467 | Coupling structure of the upper notch and ferrule on an umbrella or parasol | — | 1983-12-27 |
| 4420007 | Component framework structure for the frame of a foldable umbrella | — | 1983-12-13 |
| 4418707 | Locking device of an automatic opening umbrella | — | 1983-12-06 |