John R. Andrews
132Patents
17h-index
119Co-inventors
89Inventor score
Filing activity: Jan 25, 1984 → Apr 22, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6229114A | Precision laser cutting of adhesive members | Performing Operations; Transporting | 106 | Expired |
| US6139674A | Method of making an ink jet printhead filter by laser ablation | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5175643A | Monolithic integrated master oscillator power amplifier | Electricity | 47 | Expired |
| US6302523A | Ink jet printheads | Performing Operations; Transporting | 40 | Expired |
| US7527359B2 | Circuitry for printer | Performing Operations; Transporting | 39 | Active |
| US5459737A | Test access port controlled built in current monitor for IC devices | Physics | 39 | Expired |
| US6079819A | Ink jet printhead having a low cross talk ink channel structure | Performing Operations; Transporting | 36 | Expired |
| US5231314A | Programmable timing circuit for integrated circuit device with test access port | Electricity | 31 | Expired |
| US5379302A | ECL test access port with low power control | Physics | 30 | Expired |
| US6388231B1 | Systems and methods for controlling depths of a laser cut | Performing Operations; Transporting | 26 | Expired |
| US5357536A | Method and apparatus for the positioning of laser diodes | Electricity | 25 | Expired |
| US5418556A | Method and apparatus for registering multiple images in a color xerographic system | Performing Operations; Transporting | 24 | Expired |
| US5051328A | Photosensitive imaging member with a low-reflection ground plane | Physics | 22 | Expired |
| US5640188A | Multiple diode laser employing mating substrates | Electricity | 21 | Expired |
| US5751315A | Thermal ink-jet printhead with a thermally isolated heating element in each ejector | Performing Operations; Transporting | 21 | Expired |
| US5432535A | Method and apparatus for fabrication of multibeam lasers | Electricity | 20 | Expired |
| US6464347B2 | Laser ablated filter | Performing Operations; Transporting | 19 | Expired |
| US6779877B2 | Ink jet printhead having a channel plate with integral filter | Performing Operations; Transporting | 16 | Expired |
| US6759012B2 | Pin holder for a microarraying apparatus | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5493326A | Method and apparatus for scan line skew correction using a gradient index electrooptic prism | Physics | 15 | Expired |
| US6199980A | Efficient fluid filtering device and an ink jet printhead including the same | Performing Operations; Transporting | 15 | Expired |
| US4747646A | Optical holographic scanner | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5363126A | Device and apparatus for high speed tracking in a raster output scanner | Electricity | 14 | Expired |
| US8197031B2 | Fluid dispensing subassembly with polymer layer | Emerging Cross-Sectional Technologies | 14 | Active |
| US6289187A | Carbon fiber commutator brush for a toner developing device and method for making | Emerging Cross-Sectional Technologies | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.