John Johnson
13Patents
8h-index
19Co-inventors
69Inventor score
Filing activity: Feb 20, 1985 → Sep 20, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6821235B1 | Ankle exercise device | Human Necessities | 41 | Expired |
| US4695442A | Ammonia synthesis process | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5820035A | Broadcast spreader mechanism | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5072932A | Exercise apparatus | Human Necessities | 19 | Expired |
| USD332647S | Adjustable step-up box for exercise | General | 15 | Expired |
| US4772420A | Gas separation | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4910007A | Ammonia synthesis | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4747853A | Pressure control | Emerging Cross-Sectional Technologies | 9 | Expired |
| US8590786B2 | System and method for using a mobile device to locate a followed item in a retail store | Physics | 4 | Active |
| US10679198B2 | System and method for handling an offer to purchase a followed item | Physics | 3 | Active |
| US9834070B2 | Vehicle door | Emerging Cross-Sectional Technologies | 1 | Active |
| US10946711B2 | Vehicle twist axle assembly | Fixed Constructions | 0 | Active |
| US11174591B2 | Green liquor clarification using sedimentation tank during white liquor preparation | Textiles; Paper | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.