National Research Corp
National RActive Patents
0
Total Holdings
38
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB885632A | Coating with aluminum vapors | Expired / Lapsed | 1960-04-01 | — | 0 | Details |
| GB757597A | Improvements in or relating to apparatus for measuring flui… | Expired / Lapsed | 1953-08-04 | — | 0 | Details |
| US3363830A | Diffusion pump | Expired / Lapsed | 1967-02-16 | 1968-01-16 | 0 | Details |
| US3326176A | Work-registration device including ionic beam probe | Expired / Lapsed | 1964-10-27 | 1967-06-20 | 2 | Details |
| US3296684A | Method of forming intermetallic superconductors | Expired / Lapsed | 1962-09-24 | 1967-01-10 | 2 | Details |
| US3262187A | Method of making superconductive wires | Expired / Lapsed | 1963-09-25 | 1966-07-26 | 4 | Details |
| US3218693A | Process of making niobium stannide superconductors | Expired / Lapsed | 1962-07-03 | 1965-11-23 | 4 | Details |
| US3165255A | High vacuum device | Expired / Lapsed | 1962-06-11 | 1965-01-12 | 2 | Details |
| US3046936A | Improvement in vacuum coating apparatus comprising an ion t… | Expired / Lapsed | 1958-06-04 | 1962-07-31 | 0 | Details |
| US3043728A | Apparatus and process for metallic vapor coating | Expired / Lapsed | 1958-03-17 | 1962-07-10 | 0 | Details |
| US3012883A | Niobium base alloy | Expired / Lapsed | 1959-07-09 | 1961-12-12 | 2 | Details |
| US3009098A | Electrical apparatus for analyzing gases | Expired / Lapsed | 1958-08-15 | 1961-11-14 | 0 | Details |
| US2936107A | High vacuum device | Expired / Lapsed | 1956-06-14 | 1960-05-10 | 0 | Details |
| US2906641A | Process for producing aluminum-coated black iron strip | Expired / Lapsed | 1958-04-18 | 1959-09-29 | 0 | Details |
| US2890878A | Apparatus for annealing in a high vacuum | Expired / Lapsed | 1956-12-28 | 1959-06-16 | 2 | Details |
| US2846971A | Apparatus for coating particulate material by thermal evapo… | Expired / Lapsed | 1956-02-23 | 1958-08-12 | 0 | Details |
| US2847299A | Production of metals | Expired / Lapsed | 1955-04-28 | 1958-08-12 | 2 | Details |
| US2828199A | Method for producing metals | Expired / Lapsed | 1950-12-13 | 1958-03-25 | 2 | Details |
| US2824488A | Apparatus for grading fibers | Expired / Lapsed | 1954-08-25 | 1958-02-25 | 0 | Details |
| US2824486A | Method of grading textile fibers | Expired / Lapsed | 1953-12-18 | 1958-02-25 | 0 | Details |
| US2815299A | Method of producing an adherent molybdenum coating on a met… | Expired / Lapsed | 1955-10-24 | 1957-12-03 | 2 | Details |
| US2789150A | Heat reservoir and electrode for production of metals in sk… | Expired / Lapsed | 1955-05-25 | 1957-04-16 | 2 | Details |
| US2776225A | Process for the production of a highly reflectant, heat res… | Expired / Lapsed | 1953-01-16 | 1957-01-01 | 2 | Details |
| US2768074A | Method of producing metals by decomposition of halides | Expired / Lapsed | 1949-09-24 | 1956-10-23 | 1 | Details |
| US2766111A | Method of producing refractory metals | Expired / Lapsed | 1951-10-18 | 1956-10-09 | 1 | Details |
| US2719094A | Coating device and method | Expired / Lapsed | 1951-06-16 | 1955-09-27 | 2 | Details |
| FR1088006A | Process for the production of pure titanium and other metals | Expired / Lapsed | 1953-09-18 | 1955-03-02 | 0 | Details |
| US2703334A | Coating | Expired / Lapsed | 1950-07-14 | 1955-03-01 | 1 | Details |
| US2665227A | Apparatus and method of coating by vapor deposition | Expired / Lapsed | 1950-06-30 | 1954-01-05 | 1 | Details |
| US2665224A | Process for vapor coating | Expired / Lapsed | 1950-03-07 | 1954-01-05 | 2 | Details |
| US2635579A | Coating by evaporating metal under vacuum | Expired / Lapsed | 1949-12-01 | 1953-04-21 | 0 | Details |
| US2625719A | Vacuum casting apparatus | Expired / Lapsed | 1950-09-27 | 1953-01-20 | 0 | Details |
| US2621625A | Vapor coating device | Expired / Lapsed | 1948-03-25 | 1952-12-16 | 0 | Details |
| US2597511A | Selectively demetalizing condenser paper | Expired / Lapsed | 1949-10-01 | 1952-05-20 | 0 | Details |
| US2545576A | Automatic control of evaporated metal film thickness | Expired / Lapsed | 1948-02-21 | 1951-03-20 | 0 | Details |
| US2497213A | Pressure gauge | Expired / Lapsed | 1945-05-22 | 1950-02-14 | 0 | Details |
| US2406682A | Desiccation method and apparatus | Expired / Lapsed | 1944-03-09 | 1946-08-27 | 0 | Details |
| US2386299A | Diffusion pump | Expired / Lapsed | 1944-07-03 | 1945-10-09 | 0 | Details |