Patent Explorer
Browse, filter, and analyze 3 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2947797A | Direct production of electrical energy from combustible fuel gases | Ruhrchemie AG | Expired / Lapsed | 1957-05-14 | 1960-08-02 | 1977-05-14 | 0.0 yrs | 0 | |
| US2889892A | Lock for the discharge of solids separated from gaseous media by means of cyclones | Ruhrchemie AG | Expired / Lapsed | 1957-07-02 | 1959-06-09 | 1977-07-02 | 0.0 yrs | 0 | |
| US2889259A | Process for the chloro-sulfonation of polyethylene | Ruhrchemie AG | Expired / Lapsed | 1956-02-08 | 1959-06-02 | 1976-02-08 | 0.0 yrs | 2 |