Charles D. Zinsmeyer
8Patents
6h-index
14Co-inventors
60Inventor score
Filing activity: Aug 29, 1988 → Feb 16, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4862808A | Robotic pipe crawling device | Performing Operations; Transporting | 91 | Expired |
| US5383733A | Ribbon cassette for a printer | Performing Operations; Transporting | 25 | Expired |
| US5267802A | Ribbon cassette storage and transfer apparatus for a printer | Performing Operations; Transporting | 20 | Expired |
| US5267401A | Method and apparatus for gauging reel diameters in a reel-to-reel sheet material transport system | Performing Operations; Transporting | 12 | Expired |
| US5280309A | Single degree of freedom belt drive tensioning system for a plotter apparatus | Physics | 9 | Expired |
| USD358601S | Ribbon cassette for a printer | General | 7 | Expired |
| US8434594B2 | Rotating platform for observation, photography, and/or hunting | Human Necessities | 2 | Active |
| US11188301B2 | Salting text and fingerprinting in database tables, text files, and data feeds | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.