Philip Johnson
11Patents
8h-index
16Co-inventors
69Inventor score
Filing activity: Dec 1, 1995 → Dec 7, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5806500A | Fuel vapor recovery system | Performing Operations; Transporting | 95 | Expired |
| US5957114A | Evaporative emission canister for an automotive vehicle | Mechanical Engineering; Lighting; Heating | 41 | Expired |
| US5706206A | Method of extracting parasitic capacitance values from the physical design of an integrated circuit | Physics | 29 | Expired |
| US6237574A | Evaporative emission canister for an automotive vehicle | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US7056474B2 | Hydrocarbon sensor and collector | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5762692A | Evaporative emissions control system for automotive vehicle | Performing Operations; Transporting | 15 | Expired |
| US6581580B2 | Hydrocarbon vapor evacuation system | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5924410A | Evaporative emission canister for an automotive vehicle | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7458366B2 | Fugitive hydrocarbon treatment module for internal combustion engine air intake system | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6575012B1 | Method and apparatus for measuring a gaseous component emanating from a vehicle | Physics | 2 | Expired |
| US11896294B2 | Method and systems for reducing treatment variability and increasing treatment efficacy and durability | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.