John Campbell
35Patents
11h-index
25Co-inventors
75Inventor score
Filing activity: Jun 19, 1979 → Jun 19, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4967827A | Method and apparatus for melting and casting metal | Performing Operations; Transporting | 73 | Expired |
| US7827122B1 | Data mining of unfiltered controller data | Physics | 64 | Expired |
| US7962440B2 | Adaptive industrial systems via embedded historian data | Emerging Cross-Sectional Technologies | 44 | Active |
| US7742833B1 | Auto discovery of embedded historians in network | Emerging Cross-Sectional Technologies | 42 | Active |
| US7930639B2 | Contextualization for historians in industrial systems | Emerging Cross-Sectional Technologies | 42 | Active |
| US4946079A | Vented and valved pouring spout | Performing Operations; Transporting | 42 | Expired |
| US7647131B1 | Dynamic determination of sampling rates | Physics | 32 | Active |
| US4252362A | Pickup bed cover | Performing Operations; Transporting | 25 | Expired |
| US5690160A | Sealing device for an-inlet of a sand mold | Performing Operations; Transporting | 23 | Expired |
| US4693292A | Casting of metal articles | Performing Operations; Transporting | 19 | Expired |
| US5735334A | Casting of light metal alloys | Performing Operations; Transporting | 12 | Expired |
| US7216691B2 | Mold-removal casting method and apparatus | Performing Operations; Transporting | 11 | Expired |
| US4269107A | Liquid propellant/regenerative charging system bubble preventer | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US7121318B2 | Lost pattern mold removal casting method and apparatus | Performing Operations; Transporting | 9 | Expired |
| US7711440B1 | Browser based embedded historian | Emerging Cross-Sectional Technologies | 9 | Active |
| US7463935B1 | Message queuing in an industrial environment | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7933666B2 | Adjustable data collection rate for embedded historians | Emerging Cross-Sectional Technologies | 8 | Active |
| US7165600B2 | Chemically bonded aggregate mold | Performing Operations; Transporting | 5 | Expired |
| US8303890B2 | Integrated quiescent processing of melts | Emerging Cross-Sectional Technologies | 3 | Active |
| US9133839B2 | Fluid-working machine and method of detecting a fault | Physics | 3 | Active |
| US7809656B2 | Microhistorians as proxies for data transfer | Physics | 2 | Active |
| US7147031B2 | Lost pattern mold removal casting method and apparatus | Performing Operations; Transporting | 2 | Expired |
| US7416110B2 | Apparatus for collecting particulate material | Performing Operations; Transporting | 2 | Expired |
| US8190284B1 | Auto discovery of embedded historians in network | Emerging Cross-Sectional Technologies | 2 | Active |
| US4440864A | Chemically bondable foundry sand | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.