National Oil Products Co
National OActive Patents
0
Total Holdings
12
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2418528A | Chromium complex compounds | Expired / Lapsed | 1941-11-21 | 1947-04-08 | 0 | Details |
| US2403305A | Production of high-twist artificial yarns | Expired / Lapsed | 1943-03-30 | 1946-07-02 | 0 | Details |
| US2403304A | High-twist artificial yarn production | Expired / Lapsed | 1943-03-30 | 1946-07-02 | 0 | Details |
| US2380418A | Treatment of fat-soluble vitamincontaining materials | Expired / Lapsed | 1940-07-02 | 1945-07-31 | 0 | Details |
| US2347178A | Reversible emulsion and application therefor | Expired / Lapsed | 1942-01-07 | 1944-04-25 | 0 | Details |
| US2318747A | Provitamin a extraction process | Expired / Lapsed | 1939-02-08 | 1943-05-11 | 0 | Details |
| US2304304A | Defoamer | Expired / Lapsed | 1939-05-31 | 1942-12-08 | 0 | Details |
| US2283531A | Vitamin food product and process of producing the same | Expired / Lapsed | 1938-05-05 | 1942-05-19 | 0 | Details |
| US2232565A | Lubricating and softening of textile materials | Expired / Lapsed | 1938-08-23 | 1941-02-18 | 0 | Details |
| US2223158A | Metallic soap solution | Expired / Lapsed | 1938-07-22 | 1940-11-26 | 0 | Details |
| US2207229A | Textile sizing | Expired / Lapsed | 1938-03-05 | 1940-07-09 | 0 | Details |
| US2183259A | Process for recovering and reusing constituents of waxed pa… | Expired / Lapsed | 1937-03-03 | 1939-12-12 | 0 | Details |