Patent Explorer
Browse, filter, and analyze 4 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3794169A | Apparatus for dissociating collected solids from a filtration membrane | Graftech Technology LLC | Expired / Lapsed | 1972-05-15 | 1974-02-26 | 1992-05-15 | 0.0 yrs | 12 | |
| US3780147A | Method for making high flow porous reverse osmosis membranes containing lipids | Graftech Technology LLC | Expired / Lapsed | 1970-12-09 | 1973-12-18 | 1990-12-09 | 0.0 yrs | 0 | |
| US3773181A | Sealing membranes in a reverse osmosis module | Graftech Technology LLC | Expired / Lapsed | 1971-07-08 | 1973-11-20 | 1991-07-08 | 0.0 yrs | 15 | |
| US3721623A | Method of improving the salt rejection of semipermeable reverse osmosis membranes | Graftech Technology LLC | Expired / Lapsed | 1971-07-23 | 1973-03-20 | 1991-07-23 | 0.0 yrs | 7 |