| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 7 | |
| #2 | United States | 5 | |
| #3 | Canada | 4 | |
| #4 | WIPO (World Intellectual Property Organization) | 4 | |
| #5 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Thermal processes | |
| #3 | Chemical engineering | |
| #4 | Machines | |
| #5 | Environmental technology | |
| #6 | Medical technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Palmer David W | 21 |
| Publication | Filing date | Title |
|---|---|---|
| EP0804708A1 | Improved flow regulator | |
| CA2272180A1 | System for controlling flow through a process region | |
| CA2145651A1 | System for Controlling Flow Through a Process Region | |
| US5320124A | Regulator adaptable for maintaining a constant partial vacuum in a remote region | |
| EP0575533A1 | Process-chamber flow control system | |
| WO9103781A1 | Flow control system | |
| US5000221A | Flow control system | |
| US4219009A | Vented solar panel |