James E. Johnson
28Patents
12h-index
28Co-inventors
81Inventor score
Filing activity: May 1, 1975 → Apr 17, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5430346A | Spark plug with a ground electrode concentrically disposed to a central electrode and having precious metal on firing surfaces | Electricity | 45 | Expired |
| US6033911A | Automated assaying device | Emerging Cross-Sectional Technologies | 43 | Expired |
| US6744269B1 | Burn-in board with adaptable heat sink device | Physics | 42 | Expired |
| US6133045A | Automated sample treatment system: apparatus and method | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5531959A | Automated liquid handling and computer controlled system and method for solid phase chromatographic extractions | Physics | 36 | Expired |
| US6080029A | Method of manufacturing a spark plug with ground electrode concentrically disposed to a central electrode | Electricity | 22 | Expired |
| US5280214A | Spark plug with a ground electrode concentrically disposed to a central electrode | Electricity | 20 | Expired |
| US4435165A | Flotation device for supporting a person in water | Performing Operations; Transporting | 19 | Expired |
| US6323665A | Apparatus capable of high power dissipation during burn-in of a device under test | Physics | 17 | Expired |
| US6852291B1 | Hybrid valve apparatus and method for fluid handling | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6983636B2 | Apparatus and method for assessing the liquid flow performances through a small dispensing orifice | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6585296B1 | Tube sealing assembly | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5760299A | Automated liquid handling and computer controlled system and method for solid phase chromatographic extractions | Physics | 11 | Expired |
| US4351108A | Packaging system for semiconductor burn-in | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7135146B2 | Universal non-contact dispense peripheral apparatus and method for a primary liquid handling device | Physics | 10 | Expired |
| US7169616B2 | Method of purging trapped gas from a system fluid contained in an actuation valve | Emerging Cross-Sectional Technologies | 7 | Expired |
| US3979084A | Apparatus for level winding tubing | Performing Operations; Transporting | 7 | Expired |
| US6599001B2 | Funeral procession warning apparatus | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5263230A | Cam operated heater clamp with locking device and rotational position indicator | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6210261A | Tool protective shield | Performing Operations; Transporting | 4 | Expired |
| US9185536B1 | Apparatus and method for obtaining inconspicuous user input on a mobile device | Electricity | 3 | Active |
| US6453929B1 | Rotary wash valve | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7497995B2 | Hybrid valve apparatus and method for fluid handling | Emerging Cross-Sectional Technologies | 2 | Expired |
| USD939653S1 | Golf ball lifter for flagstick | General | 1 | Active |
| US6749431B2 | Apparatus and method for connecting simulator instruments to a control system | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.