Stephen E. Clark
23Patents
12h-index
34Co-inventors
81Inventor score
Filing activity: May 12, 1982 → Sep 29, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6042345A | Piezoelectrically actuated fluid pumps | Mechanical Engineering; Lighting; Heating | 68 | Expired |
| US6074178A | Piezoelectrically actuated peristaltic pump | Mechanical Engineering; Lighting; Heating | 63 | Expired |
| US5849125A | Method of manufacturing flextensional transducer using pre-curved piezoelectric ceramic layer | Emerging Cross-Sectional Technologies | 63 | Expired |
| US6071088A | Piezoelectrically actuated piston pump | Mechanical Engineering; Lighting; Heating | 47 | Expired |
| US6030480A | Method for manufacturing multi-layered high-deformation piezoelectric actuators and sensors | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4738563A | Buoyant marine fence | Fixed Constructions | 42 | Expired |
| US5861702A | Piezoelectrically actuated ground fault interrupter circuit apparatus | Electricity | 37 | Expired |
| US4838732A | Elastomeric sealing device | Fixed Constructions | 30 | Expired |
| US5816780A | Piezoelectrically actuated fluid pumps | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4807080A | Integrated circuit electrostatic discharge input protection | Electricity | 20 | Expired |
| US5348041A | Separator valve | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5028819A | High CMOS open-drain output buffer | Electricity | 15 | Expired |
| US4580592A | Float controlled separator valve | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6156145A | Method of manufacturing multi-layered flextensional piezoelectric transducer | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5161564A | Automatic separator valve | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6257293A | Apparatus for manufacturing multi-layered high deformation piezoelectric actuators and sensors | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6158126A | Piezoelectrically actuated shaver | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5191068A | Removal of cells from an aqueous suspension | Physics | 2 | Expired |
| US11205564B2 | Electrostatic grid device to reduce electron space charge | Electricity | 2 | Active |
| US11963926B2 | Self-locking cover for drug waste management and systems implementing thereof | Human Necessities | 0 | Active |
| US12081145B2 | Time-dependent plasma systems and methods for thermionic conversion | Electricity | 0 | Active |
| US11626273B2 | Thermionic energy converter with thermal concentrating hot shell | Electricity | 0 | Active |
| US10658144B2 | Shadowed grid structures for electrodes in vacuum electronics | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.