| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Textiles and paper | |
| #3 | Furniture and games | |
| #4 | Environmental technology | |
| #5 | Packaging and shipping | |
| #6 | Engines, pumps and turbines | |
| #7 | Machines | |
| #8 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Water treatment | |
| #3 | Preliminary treatment of fibres | |
| #4 | Hand carried bags | |
| #5 | Household appliances | |
| #6 | Pumps | |
| #7 | Kitchen equipment | |
| #8 | Making textile fabrics | |
| #9 | Unspecified technologies | |
| #10 | Containers for goods storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Knight Edward M | 14 |
| Publication | Filing date | Title |
|---|---|---|
| US1607989A | Filtering device | |
| US1571417A | Filtering medium | |
| CA156374A | Filtre | |
| CA158936A | Filter | |
| US983625A | Filter. | |
| US973280A | Apparatus for felting fibrous materials. | |
| US890989A | Filter. | |
| US875355A | Filter medium. | |
| CA86858A | Filtering pad | |
| US737116A | Filtering medium and process of making same. | |
| US690524A | Filter. | |
| US668376A | Shipping-case and holder. | |
| US646525A | Cash or article cushion. | |
| US607513A | Combined filter and cooler |