Carpco, Inc.
20Patents
0Active
20Granted
32Portfolio score
Filing activity: Jun 4, 1974 → Feb 20, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3970546A | Method and apparatus for separating non-ferrous metal from waste material | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5251762A | Electrostatic separation of particles | Performing Operations; Transporting | 24 | Expired |
| US4116822A | Method of selectively separating glass from waste material | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4305797A | Material separation by dielectrophoresis | Performing Operations; Transporting | 16 | Expired |
| US4363723A | Multifield electrostatic separator | Performing Operations; Transporting | 14 | Expired |
| US5609256A | Process for recovery of values from solid waste materials | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6034342A | Process and apparatus for separating particles by use of triboelectrification | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5452805A | Spiral separator | Performing Operations; Transporting | 9 | Expired |
| US5184731A | Spiral separator with improved separation surface | Performing Operations; Transporting | 6 | Expired |
| US6062393A | Process and apparatus for separating particles of different magnetic susceptibilities | Performing Operations; Transporting | 6 | Expired |
| US5858223A | Magnetic separators | Performing Operations; Transporting | 6 | Expired |
| US5868257A | Magnetic separation systems | Performing Operations; Transporting | 5 | Expired |
| US5743410A | Supraconducting magnetic separator | Performing Operations; Transporting | 4 | Expired |
| US5098558A | Adjustable feed accelerator for particle separator | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4849099A | Particle feeding apparatus | Performing Operations; Transporting | 3 | Expired |
| US5967334A | In-situ self-cleaning feed system for separation equipment | Performing Operations; Transporting | 2 | Expired |
| US4421148A | Device for feeding particulate material | Performing Operations; Transporting | 2 | Expired |
| US4172819A | High intensity magnetic separator rotor | Performing Operations; Transporting | 2 | Expired |
| USD255580S | Magnetic separator for particulate materials | General | 1 | Expired |
| USD255579S | Magnetic separator for particulate materials | General | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.