| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | EPO (European Patent Office) | 6 | |
| #3 | Canada | 5 | |
| #4 | WIPO (World Intellectual Property Organization) | 3 | |
| #5 | Italy | 1 | |
| #6 | Japan | 1 | |
| #7 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Furniture and games | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Wood saws | |
| #2 | Unspecified technologies | |
| #3 | Sawing | |
| #4 | Woodworking tools | |
| #5 | Toys | |
| #6 | Metal-working | |
| #7 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Beerens Cornelis J M | 11 |
| #2 | Beerens Cornelis Johannes Mari | 9 |
| #3 | Beerens Cornelis J | 2 |
| #4 | Kooneriusu Yohanesumariabiiren | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO9101859A1 | Chain drive device and methods of forming same | |
| US5098328A | Building blocks with six face symmetry | |
| CA1219196A | Chain saws and chains therefor | |
| EP0104208A1 | Chain saws and chains therefor. | |
| EP0101693A1 | Chain saw bar. | |
| US4492030A | Chain saw bars | |
| US4435999A | Saw sharpening guide | |
| US4412463A | Chain saw sharpening guide | |
| CA1123714A | Hand saw guide | |
| US4131038A | Guide device for sharpening saws |