| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Brazil | 2 | |
| #3 | Canada | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | United Kingdom | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Basic communication technologies | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Electric motor controls | |
| #2 | Pulse technique | |
| #3 | Unspecified technologies | |
| #4 | AC and DC conversion devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hickman Mark R | 8 |
| #2 | Brown Michael M | 5 |
| #3 | Ottoson Allen E | 3 |
| #4 | Ottoson A | 2 |
| #5 | Hickman Mark | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4508976A | Adjustable frequency drive | |
| US4409535A | Gated asynchronous carrier modulation | |
| US4427902A | Optimum transistor drive circuit with over load compensation | |
| US4347466A | Motor controlling | |
| US4214190A | Tension controlling | |
| US3916276A | Direct current motor drive | |
| US3792330A | Direct current motor drive |