Inventor · disambiguated record
Jack Richard Grenfell
Also filed as: GRENFELL JACK R · GRENFELL JACK RICHARD
6 granted patents·1 pending application·177 citations·filing 2000–2015
82Inventor score
Top patents by PatentIndex Score
7 records- 0192US6646565B1Point of sale (POS) terminal security systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2000·Granted Nov 11, 2003·102 cites·26 claims
- 0291US7878397B2Enhanced security magnetic card reader especially useful in point of sale devicesVERIFONE INC·Filed 2007·Granted Feb 1, 2011·16 cites·18 claims
- 0389US6917299B2Point of sale (POS) terminal security systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jul 12, 2005·57 cites·54 claims
- 0459US11088767B2Point of sale device and method for operating sameVERIFONE INC·Filed 2015·Granted Aug 10, 2021·1 cites·20 claims
- 0559US9020427B2Point of sale device and method for operating sameVERIFONE INC·Filed 2013·Granted Apr 28, 2015·1 cites·20 claims
- 0645US9208361B1Magnetic stripe card readerVERIFONE INC·Filed 2014·Granted Dec 8, 2015·0 cites·17 claims
- 0742US2015008111A1KeypadVERIFONE INC·Filed 2013·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →