| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | United States | 4 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Optics | |
| #3 | Chemical engineering | |
| #4 | Packaging and shipping | |
| #5 | Textiles and paper | |
| #6 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Finishing textile fabrics | |
| #3 | Handling thin material | |
| #4 | Shaping of plastics | |
| #5 | Paper-making machines | |
| #6 | Electrography |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yano Akechi | 12 |
| Publication | Filing date | Title |
|---|---|---|
| EP0334123A2 | Roll with a bent shaft | |
| CA1270786A | Roll with an arched shaft | |
| CA1296171C | Roller for removing or imparting shrinkages on a metal or cloth sheeting |