Patent Explorer
Browse, filter, and analyze 9 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2650084A | Calcining lime bearing sludges | Dorr Co | Expired / Lapsed | 1949-02-26 | 1953-08-25 | 1969-02-26 | 0.0 yrs | 2 | |
| US2648433A | Process and apparatus for controlling the density of the apex discharge of a cyclone | Dorr Co | Expired / Lapsed | 1950-12-05 | 1953-08-11 | 1970-12-05 | 0.0 yrs | 0 | |
| US2625464A | Roasting of sulfides | Dorr Co | Expired / Lapsed | 1949-05-24 | 1953-01-13 | 1969-05-24 | 0.0 yrs | 1 | |
| US2517051A | Apparatus for conducting ion exchange operations | Dorr Co | Expired / Lapsed | 1949-06-03 | 1950-08-01 | 1969-06-03 | 0.0 yrs | 0 | |
| US2365221A | Apparatus and method for conducting ionic exchange operations | Dorr Co | Expired / Lapsed | 1942-02-28 | 1944-12-19 | 1962-02-28 | 0.0 yrs | 0 | |
| US2324400A | Liquid clarification | Dorr Co | Expired / Lapsed | 1941-06-21 | 1943-07-13 | 1961-06-21 | 0.0 yrs | 0 | |
| US2291772A | Combined flocculation and sedimentation apparatus | Dorr Co | Expired / Lapsed | 1940-01-24 | 1942-08-04 | 1960-01-24 | 0.0 yrs | 0 | |
| US2240371A | Pump | Dorr Co | Expired / Lapsed | 1939-12-14 | 1941-04-29 | 1959-12-14 | 0.0 yrs | 0 | |
| US1399181A | Automatic control of reactions | Dorr Co | Expired / Lapsed | 1919-12-26 | 1921-12-06 | 1939-12-26 | 0.0 yrs | 0 |