| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | France | 4 | |
| #3 | United States | 3 | |
| #4 | United Kingdom | 2 | |
| #5 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Unspecified technologies | |
| #3 | Liquid hydrocarbon mixture production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Moore Laurence L | 5 |
| #2 | Mcpherson Robert W | 2 |
| #3 | Nostrand William G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1023178A | Improvements relating to filters | |
| GB950333A | Improvements in filters and separators | |
| US3023906A | Filter | |
| US2904186A | Filter | |
| US2850168A | Full-flow filter | |
| CA714360A | Filters and separators | |
| CA642725A | Filter | |
| CA615560A | Filter element | |
| CA604393A | Filter |