Patent Explorer
Browse, filter, and analyze 4 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3941858A | Hydrophilic polymers, articles and methods of making same | National Patent Development Corp | Expired / Lapsed | 1973-08-07 | 1976-03-02 | 1993-08-07 | 0.0 yrs | 11 | |
| US3695921A | Method of coating a catheter | National Patent Development Corp | Expired / Lapsed | 1970-09-09 | 1972-10-03 | 1990-09-09 | 0.0 yrs | 0 | |
| US3311229A | Tablet package | National Patent Development Corp | Expired / Lapsed | 1965-01-21 | 1967-03-28 | 1985-01-21 | 0.0 yrs | 2 | |
| US3255753A | Electrical sleep machine and sleep inducing method | National Patent Development Corp | Expired / Lapsed | 1963-03-22 | 1966-06-14 | 1983-03-22 | 0.0 yrs | 2 |