Permutit Co Ltd
Permutit CActive Patents
0
Total Holdings
5
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB728508A | Improvements relating to the production of ion-exchange res… | Expired / Lapsed | 1952-02-08 | — | 0 | Details |
| US3446767A | Terpolymer of vinyl acetate-vinyl tertiary acid esters and … | Expired / Lapsed | 1966-03-18 | 1969-05-27 | 0 | Details |
| US3147214A | Removal of anions from aqueous solutions | Expired / Lapsed | 1961-02-14 | 1964-09-01 | 2 | Details |
| FR1190665A | Improvements in ion exchange processes and apparatus | Expired / Lapsed | 1957-12-02 | 1959-10-14 | 0 | Details |
| US2881124A | Inserts for membrane spacers | Expired / Lapsed | 1956-10-26 | 1959-04-07 | 2 | Details |