John C. Barker
33Patents
18h-index
28Co-inventors
81Inventor score
Filing activity: Jun 21, 1977 → Oct 27, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6646765B1 | Selective document scanning method and apparatus | Electricity | 114 | Expired |
| US4233343A | Three-dimensional decorative surface | Performing Operations; Transporting | 93 | Expired |
| US7002712B2 | Selective document scanning method and apparatus | Electricity | 88 | Expired |
| US6466336B1 | Method and apparatus for organizing scanned images | Electricity | 61 | Expired |
| US7190480B2 | Method and apparatus for organizing scanned images | Electricity | 58 | Expired |
| USD723514S1 | Speaker | General | 54 | Active |
| US4587617A | Image inspection system for defect detection | Physics | 50 | Expired |
| USD632720S1 | Wide splay collapsible tripod | General | 48 | Expired |
| US7344320B2 | Walking staff with tripod base and adaptable mount | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US7905667B2 | Compactible walking staff having tripod base and adaptable mount | Mechanical Engineering; Lighting; Heating | 33 | Active |
| US6300980A | Computer system design for distance viewing of information and media and extensions to display data channel for control panel interface | Electricity | 25 | Expired |
| US6721059B1 | Method and apparatus for automatically handling faxes | Electricity | 24 | Expired |
| US6295090A | Apparatus for providing video resolution compensation when converting one video source to another video source | Electricity | 23 | Expired |
| US4339489A | Simulated ceramic tile | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4169907A | Simulated ceramic tile | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4393108A | Simulated ceramic tile | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6201580A | Apparatus for supporting multiple video resources | Physics | 18 | Expired |
| US5793616A | Computer system with special circuit board arrangement | Emerging Cross-Sectional Technologies | 18 | Expired |
| USD553848S1 | Walking staff with tripod base | General | 17 | Expired |
| US6487611B1 | Seamless distributed job control between a multifunction peripheral and a host | Electricity | 14 | Expired |
| US6067226A | Apparatus for increasing the number of input/output ports while maintaining the form factor of an associated computer chassis | Electricity | 14 | Expired |
| US6577409B1 | Method and apparatus for controlling a scanning device | Electricity | 11 | Expired |
| US4578765A | Image comparison systems | Physics | 9 | Expired |
| US6510211B1 | Method and apparatus for remote FAX forwarding control | Electricity | 8 | Expired |
| US4294021A | Method and apparatus for curing of articles | Mechanical Engineering; Lighting; Heating | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.