Assignee
HOWELL CORP
US·4 granted patents·26 citations·filing 1993–1997
Top patents by PatentIndex Score
4 records- 0139US5373926AInsulated rail electrification systemHOWELL CORP·Filed 1993·Granted Dec 20, 1994·10 cites·2 claims
- 0231US5676224AElectrical collector shoe assemblyHOWELL CORP·Filed 1996·Granted Oct 14, 1997·11 cites·13 claims
- 0326US5605209AComposite electrical conductor railHOWELL CORP·Filed 1995·Granted Feb 25, 1997·2 cites·22 claims
- 0425US6006876ADuplex electrical collector shoeHOWELL CORP·Filed 1997·Granted Dec 28, 1999·3 cites·28 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →