Assignee
ORTNER FREIGHT CAR CO
7 granted patents·142 citations·filing 1977–1984
Top patents by PatentIndex Score
7 records- 0186US4366757AActuating and locking means for the hopper doors of a railroad hopper carORTNER FREIGHT CAR CO·Filed 1980·Granted Jan 4, 1983·61 cites·19 claims
- 0269US4361096ARailway hopper car door sealORTNER FREIGHT CAR CO·Filed 1978·Granted Nov 30, 1982·23 cites·25 claims
- 0362US4562633ARailway box car conversion to highway trailer-carrying flatcar and method of accomplishing itORTNER FREIGHT CAR CO·Filed 1984·Granted Jan 7, 1986·19 cites·23 claims
- 0452US4132177ARapid discharging hopper car automatic door latchORTNER FREIGHT CAR CO·Filed 1977·Granted Jan 2, 1979·15 cites·6 claims
- 0545US4561361AMounting for the top chords of the sides of a railroad hopper carORTNER FREIGHT CAR CO·Filed 1984·Granted Dec 31, 1985·9 cites·22 claims
- 0634US4606277AActuating and locking apparatus for longitudinal hopper doors of a railroad hopper carORTNER FREIGHT CAR CO·Filed 1984·Granted Aug 19, 1986·6 cites·16 claims
- 0730US4284011ARestraint assembly for the hopper door actuator of a rapid discharging railroad hopper carORTNER FREIGHT CAR CO·Filed 1980·Granted Aug 18, 1981·9 cites·8 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →