Richard E. Thatcher
10Patents
6h-index
7Co-inventors
55Inventor score
Filing activity: Jun 10, 1975 → Jan 3, 1990
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3972238A | Physical contact training apparatus | Human Necessities | 27 | Expired |
| US4475562A | Method and apparatus for separating tobacco mixture into lighter and heavier fractions | Performing Operations; Transporting | 20 | Expired |
| US4278100A | Method and apparatus for separating tobacco from rejected cigarettes | Performing Operations; Transporting | 20 | Expired |
| US4083499A | Cigarette package ripper with recycling air leg | Human Necessities | 14 | Expired |
| US4221035A | Apparatus for removal of plastic overwrap from reclaim tobacco | Performing Operations; Transporting | 11 | Expired |
| US4646759A | Vibrating trough tobacco separator and classifier | Performing Operations; Transporting | 8 | Expired |
| US5076291A | Method and apparatus for detipping loose cigarettes | Human Necessities | 5 | Expired |
| US4696312A | Method and apparatus for producing cigarette filler | Human Necessities | 5 | Expired |
| US4502621A | Paper dispensing apparatus | Emerging Cross-Sectional Technologies | 4 | Expired |
| US3987727A | Apparatus for supplying printing ink to a printing unit | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.