Warren SD Co
Warren SDActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2696151A | Process of abrasively buffing a surface of a paper web | Expired / Lapsed | 1949-12-12 | 1954-12-07 | 2 | Details |
| US2685571A | Mineral-coated paper and composition therefor | Expired / Lapsed | 1949-02-15 | 1954-08-03 | 4 | Details |
| US2562782A | Water-repellent ink transfer surface | Expired / Lapsed | 1947-12-29 | 1951-07-31 | 2 | Details |
| US2534650A | Planographic printing plate and method of making same | Expired / Lapsed | 1950-06-26 | 1950-12-19 | 2 | Details |
| US2395992A | Mineral-coated printing paper | Expired / Lapsed | 1944-04-01 | 1946-03-05 | 0 | Details |
| US2362884A | Process of making aluminum coated paper | Expired / Lapsed | 1941-04-09 | 1944-11-14 | 0 | Details |
| US2252204A | Method and apparatus for coating paper | Expired / Lapsed | 1939-03-07 | 1941-08-12 | 0 | Details |
| US2139628A | Air doctor | Expired / Lapsed | 1936-05-06 | 1938-12-06 | 0 | Details |
| US1980923A | Method of and apparatus for coating paper | Expired / Lapsed | 1931-08-18 | 1934-11-13 | 0 | Details |
| US1819109A | Apparatus for treating flexible materials | Expired / Lapsed | 1927-10-04 | 1931-08-18 | 0 | Details |