| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | United States | 4 | |
| #3 | Switzerland | 3 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Shafts | |
| #3 | Unspecified technologies | |
| #4 | Non-positive-displacement pumps | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Donley Philip F | 4 |
| #2 | Philip Ford Donley | 2 |
| #3 | Heinrich August Herman | 2 |
| #4 | Heinrich August H | 1 |
| #5 | August Herman Heinrich | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3391941A | Shaft-sealing system | |
| US3218086A | Dimensionally stabilized synthetic resin sealing ring | |
| US3131941A | Sealing unit | |
| GB884073A | Sealing system for bearings, shafts and the like | |
| GB876194A | Sealing system for bearings, shafts, and the like | |
| US2961258A | Sealing unit |