| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Germany | 6 | |
| #3 | Canada | 5 | |
| #4 | Switzerland | 4 | |
| #5 | France | 4 | |
| #6 | United Kingdom | 3 | |
| #7 | Italy | 3 | |
| #8 | Belgium | 1 | |
| #9 | Japan | 1 | |
| #10 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Machine tools | |
| #3 | Electrical machinery and energy |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sommeria Marcel R | 10 |
| #2 | Sommeria M | 7 |
| #3 | Sommeria M R | 2 |
| #4 | R Sommeria Marcel | 2 |
| #5 | Sommeria Marcel Roger | 2 |
| #6 | Schaap David J | 1 |
| #7 | Schaap David Jay | 1 |
| #8 | Van Wieren Albert L | 1 |
| #9 | Marcel Roger Sommeria | 1 |
| #10 | Barker Thomas | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4282468A | High speed position feedback and comparator system | |
| US3815004A | Rotary motor | |
| US3887122A | Press feeder control apparatus | |
| US3786331A | Digital tracer | |
| US3786333A | Digital regulating control for servo system | |
| US3667023A | Tracer control system | |
| US3539897A | Servo control system including means to compare programmed velocity with actual velocity to eliminate velocity error | |
| US3548278A | Servo system | |
| US3534203A | Linear and rotary magnetic motors | |
| CA879292A | Servo system |