Joel N. Helfer
25Patents
11h-index
33Co-inventors
75Inventor score
Filing activity: May 5, 1978 → Jul 15, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8398673B2 | Surgical instrument for grasping and cutting tissue | Human Necessities | 1,389 | Active |
| US9039694B2 | RF generator system for surgical vessel sealing | Emerging Cross-Sectional Technologies | 1,005 | Active |
| US9144455B2 | Low power tissue sealing device and method | Human Necessities | 998 | Active |
| US4619271A | Electronic thermometer with probe isolation chamber | Physics | 57 | Expired |
| US4325387A | Sealing apparatus for intrauterine pressure catheter and the like | Human Necessities | 54 | Expired |
| USD281011S | Mouthpiece for a spirometer device | General | 37 | Expired |
| US4437467A | Apparatus for monitoring fetal heartbeat and the like | Human Necessities | 31 | Expired |
| US9011466B2 | Bi-directional suture passer | Human Necessities | 27 | Active |
| US7734325B2 | Apparatus and method for multi-modal imaging | Human Necessities | 20 | Active |
| US4301806A | Rotating mechanism for introducing a fetal electrode | Human Necessities | 16 | Expired |
| US6969455B1 | Electrophoresis frame for gel slabs with different thickness holder plates | Physics | 13 | Expired |
| US6346707B1 | Electronic imaging system for autoradiography | Physics | 11 | Expired |
| US4179364A | Diffusion device for blood | Performing Operations; Transporting | 9 | Expired |
| US5779869A | Low fog electrophoresis device | Physics | 6 | Expired |
| US4290425A | Infant support board | Human Necessities | 5 | Expired |
| US9265561B2 | Low power tissue sealing device and method | Human Necessities | 4 | Active |
| US5405520A | Connectors for electrophoresis device | Physics | 3 | Expired |
| US10166064B2 | Low-power tissue sealing device and method | Human Necessities | 2 | Active |
| US11399884B2 | Low power tissue sealing device and method | Human Necessities | 1 | Active |
| US9066744B2 | Surgical instrument for grasping and cutting tissue | Human Necessities | 1 | Active |
| US9801645B2 | Surgical instrument for grasping and cutting tissue | Human Necessities | 0 | Active |
| US10716589B2 | Surgical instrument for grasping and cutting tissue | Human Necessities | 0 | Active |
| US10342599B2 | RF generator system for surgical vessel sealing | Emerging Cross-Sectional Technologies | 0 | Active |
| US9649149B2 | RF generator system for surgical vessel sealing | Emerging Cross-Sectional Technologies | 0 | Active |
| US11998260B2 | Low-power tissue sealing device and method | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.