Mark C. Johnson
49Patents
16h-index
77Co-inventors
84Inventor score
Filing activity: May 31, 1991 → Jun 7, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5577236A | Memory controller for reading data from synchronous RAM | Physics | 191 | Expired |
| US5642478A | Distributed trace data acquisition system | Physics | 137 | Expired |
| US5773160A | Electrochemical fuel cell stack with concurrent flow of coolant and oxidant streams and countercurrent flow of fuel and oxidant streams | Emerging Cross-Sectional Technologies | 75 | Expired |
| US5108116A | Laminated finger seal with logarithmic curvature | Mechanical Engineering; Lighting; Heating | 67 | Expired |
| US7473227B2 | Apparatus for the treatment of sleep apnea | Human Necessities | 63 | Expired |
| US5672439A | Method and apparatus for reducing reactant crossover in an electrochemical fuel cell | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5840438A | Electrochemical fuel cell with an electrode substrate having an in-plane nonuniform structure for control of reactant and product transport | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5874182A | Method and apparatus for reducing reactant crossover in a liquid feed electrochemical fuel cell | Emerging Cross-Sectional Technologies | 43 | Expired |
| US6589033B1 | Unitary sliding vane compressor-expander and electrical generation system | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US8414528B2 | Polymer scaffold sheaths | Emerging Cross-Sectional Technologies | 34 | Active |
| US5469592A | Geometrically efficient self-inflating seat cushion | Emerging Cross-Sectional Technologies | 28 | Expired |
| US8852257B2 | Sheaths used with polymer scaffold | Emerging Cross-Sectional Technologies | 23 | Active |
| US6586128B1 | Differential pressure fluid flow fields for fuel cells | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6124051A | Fuel cell stack with novel cooling and gas distribution systems | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5997244A | Cooling airflow vortex spoiler | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5275514A | Drill support | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5450638A | Auto-inflating cushion | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6019580A | Turbine blade attachment stress reduction rings | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US7513755B2 | Submerged motor and pump assembly | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US9119741B2 | Polymer scaffold sheaths | Emerging Cross-Sectional Technologies | 12 | Active |
| US9265889B2 | Prefilled medical injection device | Performing Operations; Transporting | 11 | Active |
| US10525212B2 | Single use injector | Human Necessities | 8 | Active |
| US9788983B2 | Removable sheath assembly for a polymer scaffold | Human Necessities | 8 | Active |
| US8961848B2 | Methods for increasing a retention force between a polymeric scaffold and a delivery balloon | Performing Operations; Transporting | 8 | Active |
| US5730403A | Arched panel wrist support | Emerging Cross-Sectional Technologies | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.