Patent Explorer
Browse, filter, and analyze 4 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2030021A | Method and apparatus for the production of sulphur dioxide | General Chemical Corp | Expired / Lapsed | 1932-09-15 | 1936-02-04 | 1952-09-15 | 0.0 yrs | 0 | |
| US1936078A | Process of purifying hydrochloric acid gas | General Chemical Corp | Expired / Lapsed | 1926-12-09 | 1933-11-21 | 1946-12-09 | 0.0 yrs | 0 | |
| US1371004A | Oxidation of sulfur dioxid and catalyst therefor | General Chemical Corp | Expired / Lapsed | 1914-10-09 | 1921-03-08 | 1934-10-09 | 0.0 yrs | 0 | |
| US1301373A | Apparatus for purifying gases and for producing briqueting material. | General Chemical Corp | Expired / Lapsed | 1917-05-15 | 1919-04-22 | 1937-05-15 | 0.0 yrs | 0 |