Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6113664 | Flange densification for filter candles | Paul Eggerstedt, Elizabeth C. Zievers | 2000-09-05 |
| 5766290 | Cross flow filter design | Paul Eggerstedt, Elizabeth C. Zievers | 1998-06-16 |
| 5500029 | Filter element and method of manufacture | Elizabeth C. Zievers, Peter Aguilar, Paul Eggerstedt | 1996-03-19 |
| 5328492 | Filtration apparatus | Peter Aguilar, Paul Eggerstedt | 1994-07-12 |
| 5256175 | Hot gas filter | Elizabeth C. Zievers, Paul Eggerstedt | 1993-10-26 |
| 5238478 | Ceramic filter element and method of manufacture | Elizabeth C. Zievers, Paul Eggerstedt | 1993-08-24 |
| 5223138 | Reinforced ceramic filter candle and method of making same | Elizabeth C. Zievers | 1993-06-29 |
| 5209844 | Hot gas filter with jet pulse cleaning | Elizabeth C. Zievers, Peter Aguilar, Paul Eggerstedt | 1993-05-11 |
| 5185018 | Structural fibrosics | Elizabeth S. Zievers | 1993-02-09 |
| 5152815 | Type 114 tiered filter | Paul Eggerstedt, Elmer Kulousek | 1992-10-06 |
| 5125277 | Gas sampling apparatus | — | 1992-06-30 |
| 5071457 | Composite for filtering hot gas and method of its manufacture | Henry Schmidt, Jr., Paul Eggerstedt | 1991-12-10 |
| 5037461 | Filtration apparatus | Paul Eggerstedt, Elmer Kulousek | 1991-08-06 |
| 4968467 | Hot gas filter | — | 1990-11-06 |
| 4865629 | Control of particle size distribution in gas filtration | Paul Eggerstedt | 1989-09-12 |
| 4741841 | Method and apparatus for particle separation | Earl A. Borre, Henry Schmidt, Jr. | 1988-05-03 |
| 4725356 | Tubular pressure filter | Paul Eggerstedt | 1988-02-16 |
| 4713174 | Mounting arrangement for a tube-type filter element | Paul Eggerstedt | 1987-12-15 |
| 4664752 | Desalination system | Paul Eggerstedt | 1987-05-12 |
| 4526688 | Pressure filter with vibratory impactor | Henry Schmidt, Jr., Allen E. Cederholm | 1985-07-02 |
| 4452707 | Process for manufacturing a filter aid | Paul Eggerstedt | 1984-06-05 |
| 4289630 | Filter cake removal method and apparatus | Henry Schmidt, Jr., Allen E. Cederholm | 1981-09-15 |
| 4238329 | Process for recovering heavy metal using insoluble starch-xanthates | — | 1980-12-09 |