P

Inventor

NGO HAO

US45 patents
⚠️ This page may combine multiple inventors who share the name “NGO HAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

VISA INT SERVICE ASS

37 patents
US9972005B2May 15, 2018

Cloud-based transactions methods and systems

VISA INT SERVICE ASS51 citations97
US10664824B2May 26, 2020

Cloud-based transactions methods and systems

VISA INT SERVICE ASS22 citations93
US10402814B2Sep 3, 2019

Cloud-based transactions methods and systems

VISA INT SERVICE ASS18 citations93
US9672508B2Jun 6, 2017

Over the air update of payment transaction data stored in secure memory

VISA INT SERVICE ASS16 citations92
US11164176B2Nov 2, 2021

Limited-use keys and cryptograms

VISA INT SERVICE ASS4 citations84
US10223694B2Mar 5, 2019

Mobile payment application provisioning and personalization on a mobile device

VISA INT SERVICE ASS9 citations84
US10103781B2Oct 16, 2018

Contactless data exchange between mobile devices and readers involving value information not necessary to perform a transaction

VISA INT SERVICE ASS9 citations84
US11030608B2Jun 8, 2021

Recordation of electronic payment transaction information

VISA INT SERVICE ASS3 citations83
US10909522B2Feb 2, 2021

Cloud-based transactions methods and systems

VISA INT SERVICE ASS5 citations83
US10037523B2Jul 31, 2018

Over the air update of payment transaction data stored in secure memory

VISA INT SERVICE ASS5 citations83
US12160516B2Dec 3, 2024

Techniques for securely performing offline authentication

VISA INT SERVICE ASS4 citations74
US11394721B2Jul 19, 2022

Binding cryptogram with protocol characteristics

VISA INT SERVICE ASS3 citations73
US11501274B2Nov 15, 2022

Over the air update of payment transaction data stored in secure memory

VISA INT SERVICE ASS2 citations72
US10769614B2Sep 8, 2020

Over the air update of payment transaction data stored in secure memory

VISA INT SERVICE ASS1 citations72
US9846873B2Dec 19, 2017

Trusted internal interface

VISA INT SERVICE ASS2 citations72
US11785449B2Oct 10, 2023

Secure on-demand ultra-wideband communication channels systems and methods

VISA INT SERVICE ASS3 citations71
US12218953B2Feb 4, 2025

Binding cryptogram with protocol characteristics

VISA INT SERVICE ASS0 citations62
US12086777B2Sep 10, 2024

Method of performing transactions with contactless payment devices using pre-tap and two-tap operations

VISA INT SERVICE ASS0 citations62
US11438766B2Sep 6, 2022

Terminal type identification in interaction processing

VISA INT SERVICE ASS0 citations62
US11315099B2Apr 26, 2022

Over the air update of payment transaction data stored in secure memory

VISA INT SERVICE ASS0 citations62
US11303450B2Apr 12, 2022

Techniques for securely performing offline authentication

VISA INT SERVICE ASS1 citations62
US11232427B2Jan 25, 2022

Method of performing transactions with contactless payment devices using pre-tap and two-tap operations

VISA INT SERVICE ASS0 citations62
US11205175B2Dec 21, 2021

Mobile payment application provisioning and personalization on a mobile device

VISA INT SERVICE ASS0 citations62
US12341875B2Jun 24, 2025

Efficient authentic communication system and method

VISA INT SERVICE ASS0 citations61
US12219347B2Feb 4, 2025

Secure on-demand ultra-wideband communication channels systems and methods

VISA INT SERVICE ASS0 citations61
US11956349B2Apr 9, 2024

Efficient authentic communication system and method

VISA INT SERVICE ASS0 citations61
US11062298B2Jul 13, 2021

Contactless enablement and disablement

VISA INT SERVICE ASS0 citations61
US11037128B2Jun 15, 2021

Over the air management of payment application installed in mobile device

VISA INT SERVICE ASS0 citations61
US10115100B2Oct 30, 2018

Over the air management of payment application installed in mobile device

VISA INT SERVICE ASS1 citations61
US9160416B2Oct 13, 2015

Contactless disablement

VISA INT SERVICE ASS3 citations61
US12469021B2Nov 11, 2025

Limited-use keys and cryptograms

VISA INT SERVICE ASS0 citations52
US10791460B2Sep 29, 2020

Terminal type identification in interaction processing

VISA INT SERVICE ASS0 citations52
US12437045B2Oct 7, 2025

Method and system using conditional blocking and non-blocking query call system and method

VISA INT SERVICE ASS0 citations51
US12015720B2Jun 18, 2024

Integrating identity tokens and privacy-preserving identity attribute attestations into interactions

VISA INT SERVICE ASS0 citations51
US10685343B2Jun 16, 2020

Trusted internal interface

VISA INT SERVICE ASS0 citations51
US10185952B2Jan 22, 2019

Contactless enablement of device

VISA INT SERVICE ASS0 citations51
US10115099B2Oct 30, 2018

Over the air management of payment application installed in mobile device

VISA INT SERVICE ASS0 citations51

AABYE CHRISTIAN

5 patents

MAKHOTIN OLEG

2 patents

WILSON DAVE WILLIAM

1 patent