James Campbell
40Patents
17h-index
53Co-inventors
84Inventor score
Filing activity: Feb 14, 1977 → Feb 3, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4924870A | Fiber optic sensors | Physics | 171 | Expired |
| US4322054A | Pinch valve | Mechanical Engineering; Lighting; Heating | 107 | Expired |
| US6652352B1 | Robotic toy | Human Necessities | 93 | Expired |
| US6944133B2 | System and method for providing access to resources using a fabric switch | Electricity | 77 | Expired |
| US6703845B2 | Occupant sensor | Performing Operations; Transporting | 65 | Expired |
| US4090639A | Multiple dose paste dispenser | Performing Operations; Transporting | 43 | Expired |
| US6252240A | Vehicle occupant discrimination system and method | Physics | 34 | Expired |
| US6109117A | Seat weight sensor | Performing Operations; Transporting | 33 | Expired |
| US7127486B1 | Method and system for facilitating marketing dialogues | Physics | 30 | Expired |
| US5530548A | Calibratable optical distance sensing system and method | Physics | 30 | Expired |
| US7098674B2 | Occupant sensor | Performing Operations; Transporting | 29 | Expired |
| US6453029B1 | Debit card system without centralized server | Electricity | 29 | Expired |
| US4172580A | Pinch valve | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US5777248A | Tuning indicator for musical instruments | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4303222A | Pinch valve | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US6957251B2 | System and method for providing network services using redundant resources | Electricity | 19 | Expired |
| US7975007B2 | Method and system for facilitating marketing dialogues | Physics | 17 | Active |
| US7389320B2 | Method and system for facilitating marketing dialogues | Physics | 16 | Expired |
| US5084160A | Method for solubilization of low-rank coal using low molecular weight cell-free filtrates derived from cultures of coriolus versicolor | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7647372B2 | Method and system for facilitating marketing dialogues | Physics | 12 | Active |
| US8255460B2 | Method and system for providing personalized network based marketing dialogues | Physics | 8 | Active |
| US8234334B2 | Method and system for facilitating marketing dialogues | Physics | 8 | Active |
| US9118615B2 | Method and system for providing personalized network based marketing dialogues | Physics | 4 | Active |
| US5496553A | Methods and compositions for the treatment of niddm | Human Necessities | 4 | Expired |
| US5777190A | Method of controlled reduction of nitroaromatics by enzymatic reaction with oxygen sensitive nitroreductase enzymes | Human Necessities | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.