John J. Johnson
14Patents
9h-index
18Co-inventors
69Inventor score
Filing activity: Nov 4, 1974 → Nov 3, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4019298A | Beam suspension system | Emerging Cross-Sectional Technologies | 147 | Expired |
| US4803978A | Apparatus for actuating an inhaler | Human Necessities | 52 | Expired |
| US5133343A | Apparatus for supporting an inhaler | Human Necessities | 43 | Expired |
| US5678634A | Method and apparatus for retrieving a whipstock | Fixed Constructions | 34 | Expired |
| US5218653A | Polarization converter with apodized acoustic waveguide | Physics | 32 | Expired |
| US4492415A | Unitary full complement bearing components containing rolling elements in a self-supporting lubricating matrix | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US5316863A | Self-brazing aluminum laminated structure | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7007761B1 | Emergency response vehicle | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6679329B2 | Sand barrier for a level 3 multilateral wellbore junction | Fixed Constructions | 10 | Expired |
| US5881808A | Window-cutting system for downhole tubulars | Fixed Constructions | 8 | Expired |
| US5676206A | Window-cutting system for downhole tubulars | Fixed Constructions | 6 | Expired |
| US6668923B2 | Positive indication system for well annulus cement displacement | Fixed Constructions | 3 | Expired |
| US8904617B2 | Diverting system and method of running a tubular | Emerging Cross-Sectional Technologies | 1 | Active |
| US9650872B2 | Diverting system | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.