Inventor · disambiguated record
John Humphrey
Also filed as: HUMPHREY JOHN J · HUMPHREY John
5 granted patents·55 citations·filing 1994–2005
79Inventor score
Technology areasE01B
Files withHUMPHREY JOHN J1
Top patents by PatentIndex Score
5 records- 0178US5501418ASwitch point roller assist apparatusFiled 1994·Granted Mar 26, 1996·28 cites·13 claims
- 0275US7434768B2Portable turnout systemHUMPHREY JOHN J·Filed 2005·Granted Oct 14, 2008·8 cites·11 claims
- 0348US6571963B2Switch heater cover support rackFiled 2001·Granted Jun 3, 2003·3 cites·7 claims
- 0447US6854945B2Drift pin cap and method of using sameFiled 2002·Granted Feb 15, 2005·3 cites·6 claims
- 0535US5582371ARail flange securement clampFiled 1995·Granted Dec 10, 1996·13 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →