James P. Johnson
36Patents
13h-index
42Co-inventors
81Inventor score
Filing activity: Feb 21, 1975 → Aug 11, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4024501A | Line driver system | Electricity | 53 | Expired |
| US5576691A | Method and apparatus for deterring theft of manually operated wheeled vehicles | Performing Operations; Transporting | 31 | Expired |
| USD384471S | Conveyor track | General | 28 | Expired |
| US5598784A | Extruded aluminum conveyor with track offset | Performing Operations; Transporting | 26 | Expired |
| US5002406A | Sealing structure for a spherical bearing assembly | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US6763930B2 | Accumulation conveyor assembly | Performing Operations; Transporting | 20 | Expired |
| US5704719A | Street sweeper bearing with wear resistant resiliently biased face seal | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5863137A | Shaft locking device for bearing assemblies | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5716147A | Corrosion-resistant bearing assembly | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5429420A | Pavement cutting saw | Fixed Constructions | 18 | Expired |
| US4902145A | Ball separator for bearing assembly | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4868500A | Method for determining properties of liquid-containing porous media using nuclear magnetic resonance imaging | Physics | 16 | Expired |
| US7300210B2 | Bearing locking collar with laminated plates | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7272618B1 | Method and apparatus for automated information retrieval and component ordering | Emerging Cross-Sectional Technologies | 12 | Expired |
| US9409727B2 | Conveyor merge assembly | Performing Operations; Transporting | 10 | Active |
| US5121999A | Bearing assembly with seal and shield | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| USD370759S | Conveyor track | General | 9 | Expired |
| US6817769B2 | Roller bearing having high performance bearing seal and cartridge | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| USD384470S | Conveyor track | General | 8 | Expired |
| US7239113B2 | Method for reducing undesired currents in an electrical power generation system | Electricity | 7 | Expired |
| US7280377B2 | Power converter in a utility interactive system | Electricity | 7 | Expired |
| US3957299A | Weeding tool | Human Necessities | 7 | Expired |
| USD323837S | Ball separator for bearing assembly | General | 7 | Expired |
| US6803677B2 | System for providing multiple power conversion operations | Electricity | 6 | Expired |
| US7114613B2 | Article unscrambler with high speed tapered roller | Performing Operations; Transporting | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.