West Virginia Pulp and Paper Co
West VirgiActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3296158A | Method of preparing lignin reinforced rubber and product th… | Expired / Lapsed | 1961-03-23 | 1967-01-03 | 4 | Details |
| US3222964A | Method of sheeting webs | Expired / Lapsed | 1964-03-06 | 1965-12-14 | 2 | Details |
| US2680683A | Charging and discharging mechanism for use in continuous co… | Expired / Lapsed | 1951-12-06 | 1954-06-08 | 2 | Details |
| US2608537A | Lignin reinforced rubber and method of making same | Expired / Lapsed | 1947-07-12 | 1952-08-26 | 1 | Details |
| US2390977A | Evening roll for flow boxes | Expired / Lapsed | 1941-04-16 | 1945-12-11 | 0 | Details |
| US2287322A | Apparatus for testing color | Expired / Lapsed | 1939-12-14 | 1942-06-23 | 0 | Details |
| US2199228A | Method of and apparatus for coating paper | Expired / Lapsed | 1936-07-16 | 1940-04-30 | 0 | Details |