John Warren
11Patents
7h-index
15Co-inventors
63Inventor score
Filing activity: Dec 2, 1992 → Jun 27, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5333422A | Lightweight extendable and retractable pole | Fixed Constructions | 1,474 | Expired |
| US6478850B2 | Miniaturized wearable oxygen concentrator | Performing Operations; Transporting | 70 | Expired |
| US6547851B2 | Miniaturized wearable oxygen concentrator | Performing Operations; Transporting | 59 | Expired |
| US5544645A | Combination water heating and space heating apparatus | Mechanical Engineering; Lighting; Heating | 50 | Expired |
| US7491261B2 | Process and apparatus for generating and delivering an enriched gas fraction | Performing Operations; Transporting | 26 | Active |
| US7704304B2 | Process and apparatus for generating and delivering an enriched gas fraction | Performing Operations; Transporting | 19 | Active |
| US6041669A | Methods of and apparatus for testing and venting drums | Physics | 9 | Expired |
| US5767422A | Methods of and apparatus for testing and venting drums | Physics | 5 | Expired |
| US11951260B2 | Efficient enriched oxygen airflow systems and methods | Human Necessities | 0 | Active |
| US11125183B1 | Effective low temperature differential powered engines, systems, and methods | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8157438B2 | Method and apparatus for generating electricity using ambient heat | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.