| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 4 | |
| #2 | United States | 3 | |
| #3 | Australia | 1 | |
| #4 | Canada | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Devices for public amusement | |
| #2 | Physical training equipment | |
| #3 | Railway systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Underbrink John M | 6 |
| #2 | Keeler Russell L | 5 |
| #3 | Lovgren Brian | 4 |
| #4 | Rothacker Joshua | 4 |
| #5 | Underbrink John | 4 |
| #6 | Danforth Paul J | 2 |
| #7 | Lovgren Brian D | 1 |
| #8 | York Daniel R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2010104523A1 | Collaborative play toy | |
| US2006094568A1 | Playground equipment | |
| US5443012A | Playground carriage | |
| US5468199A | Sliding-handgrip amusement apparatus |