| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 6 | |
| #2 | Germany | 1 | |
| #3 | United Kingdom | 1 | |
| #4 | Netherlands | 1 | |
| #5 | Norway | 1 | |
| #6 | Sweden | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Marine propulsion |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hisada Naoji | 4 |
| #2 | Saeki Morihiro | 2 |
| #3 | Hisada N | 1 |
| #4 | Igawa Katsuya | 1 |
| #5 | Nakajima Tsukasa | 1 |
| #6 | Amada Mitsugi | 1 |
| #7 | Hisada Naojo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPS54151291A | Variable pitch propeller joint change device | |
| JPS5355444A | Method of producing clad plate | |
| JPS538987A | Device for pitch variation of marine variable pitch propeller | |
| JPS52106149A | Plate heat exchanger | |
| JPS522992A | Stern tube | |
| JPS522993A | Method of attaching stern tube |