Timothy R. Erwin
8Patents
4h-index
4Co-inventors
42Inventor score
Filing activity: Oct 28, 1982 → May 1, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4787046A | Mailing system having a capability for one-step postage metering | Physics | 15 | Expired |
| US4509780A | Postage access door for postage meters | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4805946A | Postage meter security seal | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4559444A | Postage meter | Physics | 4 | Expired |
| US4796527A | Value printing die protection mechanism in a postage meter machine | Physics | 3 | Expired |
| US4478443A | Postage meter security seal | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4796526A | Value printing die protection device in an electronic postage meter machine | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4608484A | Postage meter | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.