Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3774771A | Reverse osmosis module | INTERIOR | Expired / Lapsed | 1971-12-09 | 1973-11-27 | 1991-12-09 | 0.0 yrs | 9 | |
| US3775308A | Method for preparation of composite semipermeable membrane | INTERIOR | Expired / Lapsed | 1972-05-18 | 1973-11-27 | 1992-05-18 | 0.0 yrs | 0 |