| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 2 | |
| #2 | Australia | 1 | |
| #3 | Brazil | 1 | |
| #4 | Canada | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Finland | 1 | |
| #7 | Hungary | 1 | |
| #8 | Republic of Korea | 1 | |
| #9 | Norway | 1 | |
| #10 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Spring or inertia motors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Whitehead Charles A | 10 |
| #2 | Groom Kenneth N | 10 |
| #3 | Groom Kenneth M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| HUT63915A | Hydraulic pressure converting and operating system operating by form-memory material | |
| US5079920A | Hydraulic shape memory material stress to hydraulic pressure transducer | |
| US4945727A | Hydraulic shape memory alloy actuator |