Zeftron, Inc.
5Patents
0Active
5Granted
30Portfolio score
Filing activity: Jul 11, 1996 → Feb 16, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5777547A | Car identification and ordering system | Performing Operations; Transporting | 53 | Expired |
| US5722736A | Electronic pneumatic brake system | Performing Operations; Transporting | 35 | Expired |
| US5924774A | Electronic pneumatic brake system | Performing Operations; Transporting | 23 | Expired |
| US6036282A | Railcar air motor driven generator | Performing Operations; Transporting | 22 | Expired |
| US6024419A | Railcar braking system | Performing Operations; Transporting | 22 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.