Inventor
GARRETT DUNCAN
GB26 patents
⚠️ This page may combine multiple inventors who share the name “GARRETT DUNCAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MASTERCARD INTERNATIONAL INC
18 patentsUS7424977B2Sep 16, 2008
Method and system for conducting contactless payment card transactions
MASTERCARD INTERNATIONAL INC234 citations98
US8370258B2Feb 5, 2013
Apparatus, method, and computer program product for recovering torn smart payment device transactions
MASTERCARD INTERNATIONAL INC17 citations92
US7717346B2May 18, 2010
Collision detection and avoidance scheme for contactless card payment systems
MASTERCARD INTERNATIONAL INC15 citations92
US11922428B2Mar 5, 2024
Security for contactless transactions
MASTERCARD INTERNATIONAL INC4 citations84
US9779402B2Oct 3, 2017
Electronic authentication systems
MASTERCARD INTERNATIONAL INC4 citations84
US7775445B2Aug 17, 2010
Reference equipment for testing contactless payment devices
MASTERCARD INTERNATIONAL INC9 citations83
US7431217B2Oct 7, 2008
Reference equipment for testing contactless payment devices
MASTERCARD INTERNATIONAL INC8 citations73
US7422157B2Sep 9, 2008
Payment card signal characterization methods and circuits
MASTERCARD INTERNATIONAL INC4 citations68
US11855969B2Dec 26, 2023
Method and system for trusted notifications
MASTERCARD INTERNATIONAL INC0 citations62
US11146539B2Oct 12, 2021
Method and system for trusted notifications
MASTERCARD INTERNATIONAL INC0 citations62
US10461927B2Oct 29, 2019
Secure channel establishment between payment device and terminal device
MASTERCARD INTERNATIONAL INC1 citations62
US10181121B2Jan 15, 2019
Apparatus, method, and computer program product for recovering torn smart payment device transactions
MASTERCARD INTERNATIONAL INC1 citations62
US7520435B2Apr 21, 2009
Contactless payment card reader with a frusto-conical operating volume
MASTERCARD INTERNATIONAL INC2 citations62
US11379849B2Jul 5, 2022
Security for contactless transactions
MASTERCARD INTERNATIONAL INC0 citations61
US12118534B2Oct 15, 2024
Access control bypass on mobile for mass transit
MASTERCARD INTERNATIONAL INC0 citations60
US11734669B2Aug 22, 2023
Access control bypass on mobile for mass transit
MASTERCARD INTERNATIONAL INC0 citations60
US11188893B2Nov 30, 2021
Access control bypass on mobile for mass transit
MASTERCARD INTERNATIONAL INC0 citations49
US11580509B2Feb 14, 2023
Transaction device, computer program and transaction method
MASTERCARD INTERNATIONAL INC0 citations41