Permea Inc
Permea IncActive Patents
0
Total Holdings
11
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4894068A | Process for capturing nitrogen from air using gas separatio… | Expired / Lapsed | 1988-12-27 | 1990-01-16 | 6 | Details |
| US4518399A | Process for recovering gases from landfills | Expired / Lapsed | 1984-08-24 | 1985-05-21 | 4 | Details |
| US4435191A | Process for separating aggressive gases from gas mixtures | Expired / Lapsed | 1983-06-30 | 1984-03-06 | 10 | Details |
| US4380460A | Gas separation apparatus | Expired / Lapsed | 1981-12-21 | 1983-04-19 | 13 | Details |
| US4378981A | Gas separation apparatus | Expired / Lapsed | 1981-12-21 | 1983-04-05 | 8 | Details |
| US4308654A | Methods for assembling permeators | Expired / Lapsed | 1979-09-24 | 1982-01-05 | 16 | Details |
| US4230463A | Multicomponent membranes for gas separations | Expired / Lapsed | 1977-09-13 | 1980-10-28 | 89 | Details |
| US4222977A | Process to produce inorganic hollow fibers | Expired / Lapsed | 1978-05-16 | 1980-09-16 | 14 | Details |
| US4220535A | Multi-zoned hollow fiber permeator | Expired / Lapsed | 1978-08-04 | 1980-09-02 | 16 | Details |
| US4214020A | Processes for coating bundles of hollow fiber membranes | Expired / Lapsed | 1977-11-17 | 1980-07-22 | 34 | Details |
| US3975478A | Method for producing highly permeable acrylic hollow fibers | Expired / Lapsed | 1974-08-14 | 1976-08-17 | 11 | Details |