National Carbon Co Inc
National CActive Patents
0
Total Holdings
35
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2448685A | Electrical contact brush | Expired / Lapsed | 1944-04-29 | 1948-09-07 | 0 | Details |
| US2434450A | Accelerated light fastness testing apparatus | Expired / Lapsed | 1941-10-01 | 1948-01-13 | 0 | Details |
| US2412701A | Brush for electrical machinery | Expired / Lapsed | 1941-02-27 | 1946-12-17 | 0 | Details |
| US2396693A | Dry cell and process for manufacturing the same | Expired / Lapsed | 1942-04-18 | 1946-03-19 | 0 | Details |
| US2365303A | Garment bag | Expired / Lapsed | 1942-06-03 | 1944-12-19 | 0 | Details |
| US2358419A | Electrode for use in electrolytic processes | Expired / Lapsed | 1942-07-25 | 1944-09-19 | 0 | Details |
| US2300503A | Composite article | Expired / Lapsed | 1939-10-17 | 1942-11-03 | 0 | Details |
| US2273795A | Electrolytic process | Expired / Lapsed | 1936-12-31 | 1942-02-17 | 0 | Details |
| US2272969A | Galvanic battery | Expired / Lapsed | 1939-01-28 | 1942-02-10 | 0 | Details |
| US2174887A | Impregnation of porous materials | Expired / Lapsed | 1936-09-23 | 1939-10-03 | 0 | Details |
| US2027962A | Production of articles from plastic compositions | Expired / Lapsed | 1933-03-03 | 1936-01-14 | 0 | Details |
| US2020085A | Brush molding composition and process of making the same | Expired / Lapsed | 1932-03-11 | 1935-11-05 | 0 | Details |
| US1948382A | Oxidation resisting carbon article | Expired / Lapsed | 1931-09-02 | 1934-02-20 | 0 | Details |
| US1835867A | Primary cells, and electrolyte therefor | Expired / Lapsed | 1925-05-15 | 1931-12-08 | 0 | Details |
| US1821008A | Dry cell battery | Expired / Lapsed | 1927-01-13 | 1931-09-01 | 0 | Details |
| US1807331A | Battery charging unit | Expired / Lapsed | 1927-11-08 | 1931-05-26 | 0 | Details |
| US1802712A | Handlamp switch | Expired / Lapsed | 1928-05-11 | 1931-04-28 | 0 | Details |
| US1737188A | Method of precooking paste in dry cells | Expired / Lapsed | 1927-08-29 | 1929-11-26 | 0 | Details |
| US1711739A | Nitrocellulose lacquer for sealing tops of dry cells | Expired / Lapsed | 1927-11-21 | 1929-05-07 | 0 | Details |
| US1611153A | Dry cell and process of making the same | Expired / Lapsed | 1923-11-21 | 1926-12-21 | 0 | Details |
| US1594810A | Thermoplastic composition | Expired / Lapsed | 1923-07-02 | 1926-08-03 | 0 | Details |
| US1515945A | Coated dry cell and process of making the same | Expired / Lapsed | 1919-06-30 | 1924-11-18 | 0 | Details |
| US1506302A | Flash light and electrolytic rectifier | Expired / Lapsed | 1920-12-20 | 1924-08-26 | 0 | Details |
| US1506303A | Flash light | Expired / Lapsed | 1920-12-20 | 1924-08-26 | 0 | Details |
| US1501108A | Process of calcining carbon and products thereof | Expired / Lapsed | 1921-07-15 | 1924-07-15 | 0 | Details |
| US1481178A | Electric battery | Expired / Lapsed | 1920-02-05 | 1924-01-15 | 0 | Details |
| US1393739A | Electric battery | Expired / Lapsed | 1919-01-16 | 1921-10-18 | 0 | Details |
| US1357160A | Electric battery | Expired / Lapsed | 1916-02-17 | 1920-10-26 | 0 | Details |
| US1337217A | Battery-switch | Expired / Lapsed | 1916-02-04 | 1920-04-20 | 0 | Details |
| US1282057A | Electric battery. | Expired / Lapsed | — | 1918-10-22 | 0 | Details |
| US1259121A | Process of manufacturing lampblack. | Expired / Lapsed | 1916-06-24 | 1918-03-12 | 0 | Details |
| US1238849A | Lamp-socket. | Expired / Lapsed | 1916-04-22 | 1917-09-04 | 0 | Details |
| US1098794A | Article with protective coating. | Expired / Lapsed | 1912-10-29 | 1914-06-02 | 0 | Details |
| US1015317A | Dry cell. | Expired / Lapsed | 1911-10-14 | 1912-01-23 | 0 | Details |
| US701453A | Carbon-sorting machine. | Expired / Lapsed | 1902-02-15 | 1902-06-03 | 0 | Details |