John Davis
25Patents
8h-index
28Co-inventors
75Inventor score
Filing activity: Mar 17, 1982 → Sep 1, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5636719A | Rotational control apparatus | Mechanical Engineering; Lighting; Heating | 32 | Expired |
| US5613586A | Rotational control apparatus | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US5611415A | Rotational control apparatus | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5994810A | Integral steel-aluminum ring for eddy current activated friction clutch | Emerging Cross-Sectional Technologies | 15 | Expired |
| US8343349B2 | Chromatography column and maintenance method | Emerging Cross-Sectional Technologies | 15 | Active |
| US7780853B2 | Method for conducting maintenance on a chromatography column | Physics | 12 | Active |
| US5191002A | Method and compositions for a floor care maintenance system | Chemistry; Metallurgy | 11 | Expired |
| US7708891B2 | Chromatography column and method of maintenance | Physics | 9 | Active |
| US6576124B2 | Chromatography device | Physics | 8 | Expired |
| US7785473B2 | Chromatography column and method of maintenance | Emerging Cross-Sectional Technologies | 7 | Active |
| US6936166B1 | Endpiece for a chromatography column | Physics | 3 | Expired |
| USD639980S1 | Chromatography column | General | 3 | Expired |
| US8607829B2 | System and method for the automation of column and media packing | Physics | 3 | Active |
| US8864997B2 | Method for conducting maintenance on a chromatography column | Physics | 3 | Active |
| US8246833B2 | Chromatography column and maintenance method | Emerging Cross-Sectional Technologies | 2 | Active |
| US8663477B2 | Chromatography column stand | Emerging Cross-Sectional Technologies | 2 | Active |
| US4468156A | Underwater structure and method for its construction | Fixed Constructions | 1 | Expired |
| US9687756B2 | Chromatography column stand | Emerging Cross-Sectional Technologies | 1 | Active |
| US8632679B2 | Chromatography column and method of maintenance | Physics | 1 | Active |
| US9144754B2 | System and method for the automation of column and media packing | Physics | 0 | Active |
| US10480507B2 | Gerotor assembly having an oil groove | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11045746B2 | System and method for assembling a large scale chromatography structure | Emerging Cross-Sectional Technologies | 0 | Active |
| US10018083B2 | Lubricating fluid system for a vehicle with self compensation plate | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10758988B2 | Method for conducting maintenance on a chromatography column | Physics | 0 | Active |
| US10087794B2 | Oil pan with dedicated drain for positive crankcase ventilation | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.