Inventor · disambiguated record
Thomas R. Callahan
Also filed as: CALLAHAN THOMAS R
8 granted patents·248 citations·filing 1997–2003
90Inventor score
Technology areasB22C
Top patents by PatentIndex Score
8 records- 0193US6662853B2Method of making bolsters and sideframes for railway car trucksAMSTED IND INC·Filed 2003·Granted Dec 16, 2003·30 cites·37 claims
- 0293US6622776B2Method of making sideframes for railway car trucksAMSTED IND INC·Filed 2000·Granted Sep 23, 2003·35 cites·22 claims
- 0391US5752564ARailway truck castings and method and cores for making castingsAMSTED IND INC·Filed 1997·Granted May 19, 1998·62 cites·39 claims
- 0490US5967053ASideframes for railway trucksAMSTED IND INC·Filed 1998·Granted Oct 19, 1999·54 cites·6 claims
- 0582US5954114AMethod of making railway truck bolstersAMSTED IND INC·Filed 1998·Granted Sep 21, 1999·33 cites·20 claims
- 0679US6089166ABolsters for railway trucksAMSTED IND INC·Filed 1999·Granted Jul 18, 2000·28 cites·18 claims
- 0760US6823800B2Spring seat for a railway truck sideframe and method of making the sameFiled 2003·Granted Nov 30, 2004·5 cites·16 claims
- 0849US6330862B1Dead lever lugCITICORP USA INC·Filed 2000·Granted Dec 18, 2001·1 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →