| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 3 | |
| #2 | United States | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | Australia | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | General building constructions | |
| #2 | Swimming pools | |
| #3 | Skates |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sheffield Peter | 6 |
| #2 | Mccaffrey Felim | 6 |
| #3 | Brisbin Brian | 6 |
| #4 | Beynon Murray | 4 |
| Publication | Filing date | Title |
|---|---|---|
| CA2443014A1 | Ice skating arena | |
| CA2358198A1 | Ice skating arena | |
| GB9212281D0 | Auditorium | |
| US5070659A | Retractable roof for stadium structure | |
| US4995203A | Retractable roof for stadium structure |