Patent Explorer
Browse, filter, and analyze 8 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3222437A | Process for simultaneously molding and expanding stereoregular polypropylene to form a hinge | Hercules Powder Co | Expired / Lapsed | 1962-06-18 | 1965-12-07 | 1982-06-18 | 0.0 yrs | 2 | |
| US3142092A | Apparatus for simultaneously extruding and cooling tubular film | Hercules Powder Co | Expired / Lapsed | 1961-04-28 | 1964-07-28 | 1981-04-28 | 0.0 yrs | 1 | |
| US3131176A | Manufacture of water-soluble hydroxyalkyl cellulose ethers | Hercules Powder Co | Expired / Lapsed | 1960-04-13 | 1964-04-28 | 1980-04-13 | 0.0 yrs | 2 | |
| US3131177A | Manufacture of water-soluble hydroxyalkyl cellulose ethers | Hercules Powder Co | Expired / Lapsed | 1960-04-13 | 1964-04-28 | 1980-04-13 | 0.0 yrs | 2 | |
| US2891056A | Water-soluble allyl ethyl cellulose and its preparation | Hercules Powder Co | Expired / Lapsed | 1956-12-05 | 1959-06-16 | 1976-12-05 | 0.0 yrs | 2 | |
| US2382439A | Color grading apparatus and method | Hercules Powder Co | Expired / Lapsed | 1941-06-19 | 1945-08-14 | 1961-06-19 | 0.0 yrs | 0 | |
| US2294651A | High-gloss coated material | Hercules Powder Co | Expired / Lapsed | 1936-10-26 | 1942-09-01 | 1956-10-26 | 0.0 yrs | 0 | |
| US2176053A | Sizing textile fabric | Hercules Powder Co | Expired / Lapsed | 1936-09-09 | 1939-10-17 | 1956-09-09 | 0.0 yrs | 0 |