Inventor · disambiguated record
John Phillip Porrill
Also filed as: PORRILL JOHN · PORRILL JOHN PHILLIP
9 granted patents·1 pending application·76 citations·filing 2000–2021
85Inventor score
Top patents by PatentIndex Score
10 records- 0194US7648080B2Rail fixing deviceBUTZBACHER WEICHENBAU GMBH·Filed 2005·Granted Jan 19, 2010·25 cites·25 claims
- 0292US6761322B1Railway baseplate assemblyPANDROL LTD·Filed 2000·Granted Jul 13, 2004·28 cites·28 claims
- 0380US6651897B1Suspended rail fastening assemblyPANDROL LTD·Filed 2000·Granted Nov 25, 2003·13 cites·24 claims
- 0475US7954727B2Anchoring devices for rail fastening clipsPANDROL LTD·Filed 2007·Granted Jun 7, 2011·4 cites·21 claims
- 0570US8033480B2Arrangement for fastening railroad rails to a sleeperBUTZBACHER WEICHENBAU GMBH·Filed 2005·Granted Oct 11, 2011·4 cites·20 claims
- 0669US8146835B2Sealing plate for railway rail clip anchoring device and sleeper manufacturing methodCOX STEPHEN JOHN·Filed 2007·Granted Apr 3, 2012·2 cites·5 claims
- 0755US2023001968A1Remote Wear Monitoring of Components in a Railway Rail Fastening SystemPANDROL LTD·Filed 2021·Application pending·0 cites
- 0844US11753774B2Anchoring device for a railway rail fastening assemblyPANDROL LTD·Filed 2019·Granted Sep 12, 2023·0 cites·20 claims
- 0943US7874527B2Fastening rail in railway slide chair assemblyPANDROL LTD·Filed 2005·Granted Jan 25, 2011·0 cites·18 claims
- 1032US8763923B2Railway rail fastening apparatusCOX STEPHEN JOHN·Filed 2010·Granted Jul 1, 2014·0 cites·19 claims
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