Robert E. Grace
17Patents
10h-index
26Co-inventors
72Inventor score
Filing activity: Apr 21, 1980 → Nov 30, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6639669B2 | Diagnostics for color printer on-line spectrophotometer control system | Physics | 157 | Expired |
| US4318610A | Control system for an electrophotographic printing machine | Physics | 44 | Expired |
| US5887221A | Signature sensing for optimum toner control with donor roll | Physics | 30 | Expired |
| US6404997B1 | Method and apparatus for dynamically controlling image density | Physics | 21 | Expired |
| US7162172B2 | Semi-automatic image quality adjustment for multiple marking engine systems | Physics | 19 | Expired |
| US4512652A | Control scheme compensating for changing characteristics of a photoconductive member used in an electrophotographic printing machine | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5045882A | Xerographic setup and operating system for electrostatographic reproduction machines | Physics | 14 | Expired |
| US5016050A | Xerographic setup and operating system for electrostatographic reproduction machines | Physics | 10 | Expired |
| US5559579A | Closed-loop developability control in a xerographic copier or printer | Physics | 10 | Expired |
| US5749023A | Adaptive feed forward compensation for time varying toner cohesivity | Physics | 10 | Expired |
| US5613176A | Image on image process color with two black development steps | Physics | 8 | Expired |
| US6871029B2 | Process for minimizing toner usage in minimum area coverage patches and minimizing toner churning | Physics | 7 | Expired |
| US6134398A | Electrostatographic reproduction machine having dual mode development unit control apparatus and method | Physics | 7 | Expired |
| US5051781A | Xerographic setup and operating system for electrostatographic reproduction machines | Physics | 6 | Expired |
| US6668146B2 | Hybrid scavengeless development using direct current voltage shift to remove wire history | Physics | 4 | Expired |
| US6321043A | Control of halftone and solid area image quality by way of a halftone discharge ratio | Physics | 3 | Expired |
| US5006892A | Xerographic setup and operating system for electrostatographic reproduction machines | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.