| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Kitchen equipment | |
| #3 | Household appliances |
| # | Name | Total Patents |
|---|---|---|
| #1 | Compton Charles A | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2314771A | Headrest | |
| US2093549A | Automobile oil filter | |
| US2026867A | Oil filter for restaurants | |
| US2065658A | Oil filter | |
| US1927228A | Filter | |
| US1927229A | Oil filter for automobiles and the like | |
| CA184933A | Warming receptacle | |
| US1223311A | Warming-receptacle. | |
| CA356835A | Filter | |
| CA356836A | Automobile oil filter | |
| CA378476A | Automobile oil filter | |
| CA358742A | Oil filter |