| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 22 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Packaging and shipping | |
| #3 | Machines | |
| #4 | Environmental technology | |
| #5 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Transport or storage devices | |
| #3 | Air-conditioning | |
| #4 | Climate change mitigation in goods production | |
| #5 | Spraying devices | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gene Hirs | 22 |
| Publication | Filing date | Title |
|---|---|---|
| US3333693A | Filtering method and apparatus | |
| US3261453A | Helical storage unit | |
| US3332556A | Filter apparatus | |
| US3306458A | Multiple shell filters | |
| US3335862A | Multiple shell filters | |
| US3288296A | Filter screen | |
| US3206035A | Filter cleaning mechanism | |
| US3169109A | Filter apparatus | |
| US3219188A | Traveling screen filter | |
| US3221885A | Filter apparatus | |
| US3168471A | Filter apparatus | |
| US3087620A | Filter apparatus | |
| US3091336A | Filter apparatus | |
| US3052070A | Parts transporting and storage apparatus | |
| US2933179A | Parts storage apparatus | |
| US2982412A | Filter apparatus | |
| US2969148A | Filter apparatus | |
| US2867327A | Filter apparatus | |
| US2867324A | Filter apparatus | |
| US2795288A | Filter apparatus |