John C. Marshall
42Patents
13h-index
27Co-inventors
81Inventor score
Filing activity: Jul 12, 1978 → Sep 30, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4917486A | Photocoagulation apparatus | Human Necessities | 156 | Expired |
| US6425449B1 | Up-hole pump-in core barrel apparatus | Fixed Constructions | 46 | Expired |
| US5934393A | Core barrel apparatus | Fixed Constructions | 45 | Expired |
| US4936751A | Universal fan blade mount | Emerging Cross-Sectional Technologies | 37 | Expired |
| US6038715A | Multiple shower combination | Fixed Constructions | 33 | Expired |
| US4597029A | Signal connection system for semiconductor chip | Electricity | 22 | Expired |
| USD452863S1 | Communications card with a receptacle for receiving a RJ-type connector plug | General | 22 | Expired |
| US5878886A | Display package for pull chains and the like | Performing Operations; Transporting | 17 | Expired |
| USD581509S1 | Combined ceiling fan and light | General | 16 | Expired |
| US6131737A | Display package for pull chains and the like | Performing Operations; Transporting | 16 | Expired |
| US4247061A | Helicopter with stabilator detuned in antisymmetric vibration modes from main rotor wake excitation frequency | Performing Operations; Transporting | 15 | Expired |
| US7363674B2 | Fan blade cleaning tool and method | Human Necessities | 15 | Expired |
| USD454125S1 | Antenna | General | 14 | Expired |
| US6709238B2 | Two-piece safety mechanism for ceiling fans | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5853193A | Passenger safety restraint apparatus | Performing Operations; Transporting | 11 | Expired |
| US6881037B2 | Two-piece safety mechanism for ceiling fans | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7374138B2 | Ceiling fan display | Human Necessities | 10 | Expired |
| US5947283A | Fan blade display package | Performing Operations; Transporting | 8 | Expired |
| USD356444S | Brush | General | 8 | Expired |
| US7126708B1 | Method for enabling a photolab to process digital images and related data | Physics | 7 | Expired |
| USD288801S | Voltage surge protector | General | 7 | Expired |
| USD276150S | Automatic outlet control | General | 6 | Expired |
| USD485899S1 | Blade arm for a ceiling fan | General | 5 | Expired |
| USD454861S1 | Antenna | General | 5 | Expired |
| US4524908A | Set-back thermostat assembly | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.