Joan R. Ewing
17Patents
12h-index
23Co-inventors
78Inventor score
Filing activity: Jun 30, 1969 → Nov 1, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4841099A | Electrically insulating polymer matrix with conductive path formed in situ | Electricity | 50 | Expired |
| US5968674A | Conductive polymer coatings and processes thereof | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5153023A | Process for catalysis of electroless metal plating on plastic | Chemistry; Metallurgy | 36 | Expired |
| US4761709A | Contact brush charging | Physics | 33 | Expired |
| US4727453A | Alternating current inductive charging of a photoreceptor | Physics | 28 | Expired |
| US4937633A | Cleaning blade defect sensing arrangement | Physics | 24 | Expired |
| US4585320A | Corona generating device | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5267866A | Flexible electrical interconnect | Electricity | 21 | Expired |
| US5587224A | Developing apparatus including a coated developer roller | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4585323A | Corona generating device | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5325267A | Remote driver board having input/output connector circuitry molded therein | Electricity | 17 | Expired |
| US4013462A | Migration imaging system | Physics | 15 | Expired |
| US4330349A | Method for preparing conductive fiber brushes | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5731078A | Developing apparatus and coated developer roller | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6350516B1 | Protective corona coating compositions and processes thereof | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5008707A | Simultaneous charging and exposure for pictorial quality | Physics | 4 | Expired |
| US3966466A | Photoelectrophoretic imaging process using dark charge injecting agent on blocking electrode | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.