Wordex Corporation
6Patents
0Active
6Granted
26Portfolio score
Filing activity: Oct 1, 1979 → Oct 28, 1986
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4367963A | Refillable typewriter ribbon cartridge | Performing Operations; Transporting | 32 | Expired |
| US4307969A | Universal ribbon cartridge | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4490059A | Ribbon metering device | Performing Operations; Transporting | 17 | Expired |
| US4400103A | Universal ribbon cartridge | Performing Operations; Transporting | 17 | Expired |
| USD272544S | Ribbon cartridge | General | 8 | Expired |
| US4770554A | Ribbon drive with invertible gear for printer ribbon cartridge | Performing Operations; Transporting | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.