Robert E. Zeman
28Patents
11h-index
30Co-inventors
75Inventor score
Filing activity: Oct 1, 1980 → Apr 29, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4855205A | Interdispersed two-phase ferrite composite and carrier therefrom | Chemistry; Metallurgy | 31 | Expired |
| US5106714A | Interdispersed two-phase ferrite composite and electrographic magnetic carrier particles therefrom | Chemistry; Metallurgy | 22 | Expired |
| US7959278B2 | Method and apparatus for ink jet printing on patterned substrate | Performing Operations; Transporting | 22 | Active |
| US5104761A | Interdispersed three-phase ferrite composite and electrographic magnetic carrier particles therefrom | Chemistry; Metallurgy | 20 | Expired |
| US5716750A | Method and apparatus for controlling gloss for toner images | Physics | 18 | Expired |
| US5190842A | Two phase ferroelectric-ferromagnetic composite carrier | Electricity | 17 | Expired |
| US5190841A | Two-phase ferroelectric-ferromagnetic composite and carrier therefrom | Physics | 15 | Expired |
| US5737677A | Apparatus and method of toner transfer using non-marking toner | Physics | 14 | Expired |
| US10272618B2 | Fabrication of 3D objects via electrostatic powder deposition | Performing Operations; Transporting | 12 | Active |
| US5016056A | Multicolor image forming apparatus and transfer roller | Physics | 11 | Expired |
| US5536352A | Methods of making centrifugally cast parts | Performing Operations; Transporting | 11 | Expired |
| US5063399A | Electrophotographic apparatus having reduced drum drive flutter | Physics | 10 | Expired |
| US5710964A | Mechanism for facilitating removal of receiver member from an intermediate image transfer member | Physics | 10 | Expired |
| US5339140A | Method and apparatus for control of toner charge | Physics | 9 | Expired |
| US5522657A | Optimization of electronic color printing process functions based on prescan information data | Electricity | 7 | Expired |
| US4344698A | Electrophotographic apparatus having improved grounding means | Emerging Cross-Sectional Technologies | 7 | Expired |
| US10723072B1 | Electrophotographic additive manufacturing process | Performing Operations; Transporting | 7 | Active |
| US7695128B2 | Producing an ink jet image having high density and gray scale | Performing Operations; Transporting | 7 | Active |
| US7789504B2 | Ink jet printing using a combination of non-marking and marking inks | Performing Operations; Transporting | 6 | Active |
| US5701567A | Compliant transfer member having multiple parallel electrodes and method of using | Physics | 5 | Expired |
| US6394569B1 | Ink jet printer method of providing an image on a receiver so that the image has reduced graininess | Performing Operations; Transporting | 5 | Expired |
| US5047791A | Electrostatic color printing apparatus | Physics | 5 | Expired |
| US7819518B2 | Digital printing apparatus for producing prints at high speed | Performing Operations; Transporting | 4 | Active |
| US5536609A | Improved thermal assisted transfer method and apparatus | Physics | 4 | Expired |
| US5677022A | Electrostatographic roller mask | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.