Mark Johnson
19Patents
6h-index
17Co-inventors
63Inventor score
Filing activity: Jul 14, 1995 → Aug 19, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6889591B2 | Recoilless impact device | Emerging Cross-Sectional Technologies | 15 | Expired |
| USD437411S | Eight vane gear shaped crown for a solid-phase reaction support pin | General | 13 | Expired |
| USD445502S | Ten vane gear shaped crown for a solid-phase reaction support pin | General | 12 | Expired |
| USD437412S | Lantern shaped crown for a solid-phase reaction support pin | General | 9 | Expired |
| US6569022B2 | Self-synchronizing tap driver for rigid tapping | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5669743A | Fluid dispensing and control system for tapping attachments | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7708506B2 | Self-synchronizing tap driver for rigid tapping with starting force adjustment | Emerging Cross-Sectional Technologies | 6 | Active |
| US6564688B2 | Recoilless impact device | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6348003B1 | Self-synchronizing tap driver for rigid tapping | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8556557B2 | Hydraulic nut and improved seals therefor | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US7707731B2 | Marking device for rotational machines | Performing Operations; Transporting | 1 | Active |
| US9046388B2 | Device and process for measuring the angle of rotation of two objects rotating in relation to each other | Physics | 1 | Active |
| US9539646B2 | Self-synchronizing tap driver for rigid/synchronous tapping with adjustable tension and/or compression | Performing Operations; Transporting | 1 | Active |
| US8550755B2 | Tap driver for rigid/synchronous tapping | Emerging Cross-Sectional Technologies | 1 | Active |
| US8690772B2 | Activation and control device for coupling two mutually activatable automatic intervention systems | Physics | 1 | Active |
| US10500893B2 | Scribing-engraving tool holder | Performing Operations; Transporting | 0 | Active |
| US11602793B2 | Compression and tension floating deburring tool | Performing Operations; Transporting | 0 | Active |
| US11260463B1 | Integrated tapping and drill attachment | Performing Operations; Transporting | 0 | Active |
| US8162573B2 | Self-reversing tapping system | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.