| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | Japan | 3 | |
| #3 | Australia | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Germany | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Netherlands | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Venting or aerating devices | |
| #3 | Unspecified technologies | |
| #4 | Certain plastics | |
| #5 | Shaping of plastics | |
| #6 | Metal-working | |
| #7 | Fillers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kucenty Jerzy | 3 |
| #2 | Humphrey Brock H | 2 |
| #3 | Humphrey Frederick H | 2 |
| #4 | Burotsuku Harorudo Hanfurei | 1 |
| #5 | Humphrey B H | 1 |
| #6 | Jiyaaji Kasentei | 1 |
| #7 | Humphrey F H | 1 |
| #8 | Chuen-Ha Sum | 1 |
| #9 | Furederitsuku Harorudo Hanfure | 1 |
| #10 | Brock Harold Humphrey | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4526195A | Reinforced plastic structure such as a valve | |
| EP0089773A1 | Channel valve | |
| CA1155034A | Reinforced plastic structure such as a valve | |
| CA1069019A | Valve with replaceable guide members |