John C. Evans
43Patents
22h-index
37Co-inventors
85Inventor score
Filing activity: Jul 18, 1975 → Jun 14, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4802602A | Insulating device for a beverage container | Performing Operations; Transporting | 224 | Expired |
| US5479530A | Signature capturing printer and data card terminal | Mechanical Engineering; Lighting; Heating | 169 | Expired |
| US5438186A | Multi-reader transaction terminal | Physics | 153 | Expired |
| US4573761A | Fiber-optic probe for sensitive Raman analysis | Physics | 111 | Expired |
| US5448044A | Signature capture pad for point of sale system | Physics | 105 | Expired |
| US5432326A | Systems and methods for operating data card terminals for transaction chargeback protection | Mechanical Engineering; Lighting; Heating | 103 | Expired |
| US5334823A | Systems and methods for operating data card terminals for transaction chargeback protection | Mechanical Engineering; Lighting; Heating | 85 | Expired |
| US4084985A | Method for producing solar energy panels by automation | Emerging Cross-Sectional Technologies | 68 | Expired |
| US5466920A | Real time decoding for card transaction terminal | Physics | 66 | Expired |
| US4217633A | Solar cell system having alternating current output | Emerging Cross-Sectional Technologies | 64 | Expired |
| US4341918A | High voltage planar multijunction solar cell | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5448047A | Card validation method using multiple cord data regions | Physics | 49 | Expired |
| US4104091A | Application of semiconductor diffusants to solar cells by screen printing | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5396545A | Self configuring data card terminal | Physics | 44 | Expired |
| US4082569A | Solar cell collector | Emerging Cross-Sectional Technologies | 42 | Expired |
| USD359951S | Multireader transaction terminal | General | 35 | Expired |
| US5426286A | Card transaction terminal | Physics | 35 | Expired |
| US5362952A | Card transaction terminal | Physics | 33 | Expired |
| USD338876S | Data card transaction terminal | General | 33 | Expired |
| US5428210A | Data card terminal with embossed character reader and signature capture | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| USD409650S | Point-of-sale terminal | General | 23 | Expired |
| US4335503A | Method of making a high voltage V-groove solar cell | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4135290A | Method for fabricating solar cells having integrated collector grids | Emerging Cross-Sectional Technologies | 21 | Expired |
| USD348440S | Data card transaction terminal | General | 15 | Expired |
| USD295709S | Can holder | General | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.