David E. Chupka
31Patents
13h-index
24Co-inventors
81Inventor score
Filing activity: Apr 29, 1974 → Oct 14, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4795560A | Screen plates | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5064537A | Seamless screen cylinder with laser cut openings | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4155841A | High turbulence screen | Textiles; Paper | 21 | Expired |
| US5262003A | Method and system for defibering paper making materials | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4725007A | Apparatus for pulping high consistency paper making stock | Textiles; Paper | 20 | Expired |
| US4885090A | Screen plates | Performing Operations; Transporting | 20 | Expired |
| US4622132A | Liquid cyclone or centrifugal cleaner | Performing Operations; Transporting | 19 | Expired |
| US4356084A | Self-sealing valve assembly to facilitate unplugging of a centrifugal cleaner | Performing Operations; Transporting | 18 | Expired |
| US4081147A | Reversible disk refiner plates | Textiles; Paper | 17 | Expired |
| US4410424A | Screening apparatus for paper making stock | Textiles; Paper | 15 | Expired |
| US4663030A | Disk rotor for selectifier screen | Performing Operations; Transporting | 15 | Expired |
| US5234172A | High pressure water jet comminuting | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4919797A | Screening apparatus for paper making stock | Textiles; Paper | 13 | Expired |
| US3970548A | Apparatus for screening paper fiber stock | Textiles; Paper | 12 | Expired |
| US4328096A | Dual flow screening apparatus | Performing Operations; Transporting | 11 | Expired |
| US4383918A | High turbulence screen | Textiles; Paper | 11 | Expired |
| US4171101A | Method of operating a disk refiner provided with reversible refining plates | Textiles; Paper | 9 | Expired |
| US4901417A | Method of finishing screen plates | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5021159A | Apparatus for thickening pulp and paper stock | Textiles; Paper | 8 | Expired |
| US5582686A | High pressure water jet comminuting | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4451358A | Noncircular rejects outlet for cyclone separator | Textiles; Paper | 6 | Expired |
| USRE28677E | Waste treatment system | General | 6 | Expired |
| US5382327A | Apparatus for thickening pulp and paper stock | Textiles; Paper | 6 | Expired |
| US3947314A | Method of treating paper fibers in a stationary screen | Performing Operations; Transporting | 5 | Expired |
| US7628890B2 | Extraction bedplate with laser or water jet cut apertures | Textiles; Paper | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.