Portex, Inc.
11Patents
0Active
11Granted
31Portfolio score
Filing activity: Sep 29, 1977 → Jun 19, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4193174A | Lever and fulcrum clamping assembly | Emerging Cross-Sectional Technologies | 160 | Expired |
| US6582397B2 | Needle safety device with antiremoval protection | Human Necessities | 126 | Expired |
| US6575944B1 | Adapter for localized treatment through a tracheal tube and method for use thereof | Human Necessities | 83 | Expired |
| US6626874B1 | Anticoagulant internally coated needle | Human Necessities | 66 | Expired |
| US4817598A | Tracheostomy tube with ring pull removable inner cannula | Human Necessities | 61 | Expired |
| US5042475A | Hinged tracheostomy tube obturator | Human Necessities | 25 | Expired |
| US6551287B2 | Needle protection apparatus used with a vial | Human Necessities | 21 | Expired |
| US4637388A | Tracheal tube obturator with reversible tip | Human Necessities | 21 | Expired |
| US4178939A | Visual indicator for cuff-type catheter | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6579254B1 | Medication adapter and method for use thereof | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6524281B1 | Needle protection device for use with a vial | Human Necessities | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.