David A. Johnson
19Patents
8h-index
29Co-inventors
72Inventor score
Filing activity: May 3, 1985 → Feb 25, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4623929A | Flash tube simmer circuitry for a film video player electronic strobe light | Electricity | 45 | Expired |
| US6137501A | Addressing circuitry for microfluidic printing apparatus | Performing Operations; Transporting | 18 | Expired |
| US5053790A | Parasitic resistance compensation for thermal printers | Performing Operations; Transporting | 17 | Expired |
| US7050197B1 | Image processor for high-speed printing applications | Electricity | 12 | Expired |
| US6607257B2 | Printhead assembly with minimized interconnections to an inkjet printhead | Performing Operations; Transporting | 12 | Expired |
| US4990930A | High speed thermal printing apparatus | Electricity | 10 | Expired |
| US6078344A | Resistive thermal printing apparatus and method having a non-contact heater | Performing Operations; Transporting | 9 | Expired |
| US6712451B2 | Printhead assembly with shift register stages facilitating cleaning of printhead nozzles | Performing Operations; Transporting | 9 | Expired |
| US6744455B2 | Method and apparatus for thermal management in a thermal printer having plural printing stations | Performing Operations; Transporting | 8 | Expired |
| US4800399A | Pulsed constant current source for continuous tone resistive ribbon printers | Performing Operations; Transporting | 6 | Expired |
| US5446355A | Media transport system with high precision position and speed control | Performing Operations; Transporting | 5 | Expired |
| US5745147A | Resistance-stable thermal print heads | Performing Operations; Transporting | 4 | Expired |
| US5932517A | Thermal dye transfer process | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8709194B1 | Assembling an electrode device | Performing Operations; Transporting | 0 | Active |
| US7071143B2 | Direct thermographic materials with improved protective layers | Physics | 0 | Expired |
| US9017927B2 | Patterning of transparent conductive coatings | Electricity | 0 | Active |
| US6820971B2 | Method of controlling heaters in a continuous ink jet print head having segmented heaters to prevent terminal ink drop misdirection | Performing Operations; Transporting | 0 | Expired |
| US6759369B2 | Thermal dye transfer print bearing patterned overlayer and process for making same | Emerging Cross-Sectional Technologies | 0 | Expired |
| US5739838A | Pulse width modulation method for a parallel input print head | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.