SK Wellman Corp
SK WellmanActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3008225A | Friction composition | Expired / Lapsed | 1959-11-30 | 1961-11-14 | 2 | Details |
| US2794526A | Clutch device | Expired / Lapsed | 1953-08-06 | 1957-06-04 | 0 | Details |
| US2541899A | Method and apparatus for forming briquettes | Expired / Lapsed | 1947-04-01 | 1951-02-13 | 0 | Details |
| US2480076A | Method of manufacturing friction plates | Expired / Lapsed | 1944-12-28 | 1949-08-23 | 0 | Details |
| US2475264A | Flexible belt | Expired / Lapsed | 1944-03-20 | 1949-07-05 | 0 | Details |
| US2408430A | Friction composition product | Expired / Lapsed | 1944-04-04 | 1946-10-01 | 0 | Details |
| US2341860A | Method of making chambered metallic articles | Expired / Lapsed | 1942-02-09 | 1944-02-15 | 0 | Details |
| US2289311A | Composite blank and method of shaping | Expired / Lapsed | 1940-03-06 | 1942-07-07 | 0 | Details |
| US2258431A | Heat treating furnace | Expired / Lapsed | 1939-07-01 | 1941-10-07 | 0 | Details |
| US2249281A | Cushioned clutch and facing | Expired / Lapsed | 1939-05-26 | 1941-07-15 | 0 | Details |