| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 15 | |
| #2 | Canada | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | United States | 3 | |
| #5 | Australia | 2 | |
| #6 | Germany | 2 | |
| #7 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Motor vehicles | |
| #2 | Load transportation vehicles | |
| #3 | Vehicle connections | |
| #4 | Hand carts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yokoyama Masato | 10 |
| #2 | Nakawaki Yoshiharu | 4 |
| #3 | Wada Keiichi | 4 |
| #4 | Nakawaki Ryoji | 2 |
| #5 | Shimoji Morio | 2 |
| #6 | Kinui Tatsuya | 1 |
| #7 | Ichikawa Kiyoaki | 1 |
| #8 | Fujita Hiroshi | 1 |
| #9 | Tomono Tatsumi | 1 |
| #10 | Oba Mohachi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2002144805A | Caster | |
| JP2000264027A | Trailer | |
| JP2000264244A | Trailer | |
| JPH11151903A | Wheel device | |
| JPH10138930A | Truck | |
| JPH0740855A | Trailer | |
| JPH05330378A | Car conveyor system | |
| JPH05193537A | Trailer | |
| JPH02262436A | Trailer | |
| JPS6430887A | Trailer | |
| JPS63137055A | Trailer | |
| JPS6397445A | Trailer | |
| JPS61282164A | Truck for curve track | |
| JPS61169499A | Cargo gear | |
| DE2362700A1 | Multiple trailer direction control appts. - has control roller engaging curved guide surfaces to allow straight aligned backward movement | |
| GB1449184A | Trailers | |
| AU6336173A | Trailers | |
| US3889977A | Trailers | |
| CA1003455A | Trailers | |
| CA997803A | Trailers |