Darrill L. Plummer
12Patents
6h-index
16Co-inventors
63Inventor score
Filing activity: Aug 1, 1988 → Jun 20, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7415995B2 | Method and system for independently filling multiple canisters from cascaded storage stations | Mechanical Engineering; Lighting; Heating | 95 | Active |
| USD395899S | Reciprocating compressor | General | 14 | Expired |
| US9890905B2 | Method and system for filling a gas cylinder | Mechanical Engineering; Lighting; Heating | 13 | Active |
| US5064359A | Annular support for a seal for a tilt piston | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| USD392649S | Reciprocating compressor | General | 8 | Expired |
| US9310024B2 | Method and system for filling a gas cylinder | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US4924759A | Press-fit retaining ring with extrusion-holding chamfer for wobble-piston cup seal | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5562431A | Isolated backstop for flexible compressor valve | Emerging Cross-Sectional Technologies | 5 | Expired |
| US10089889B2 | Unmanned aerial vehicle for situational awareness to first responders and alarm investigation | Physics | 4 | Active |
| US11883695B2 | Respirator mask with air-saver switch | Human Necessities | 0 | Active |
| US11077323B2 | Respirator mask with air-saver switch | Human Necessities | 0 | Active |
| US12403337B2 | SCBA with enhanced emergency breathing support system | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.