Inventor

PANSHIN STEPHEN D

US63 patents

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

HEWLETT PACKARD DEVELOPMENT CO

39 patents

US10875318B1Dec 29, 2020

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO31 citations97

US11034157B2Jun 15, 2021

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO29 citations94

US10894423B2Jan 19, 2021

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO29 citations94

US9893893B2Feb 13, 2018

Replaceable item authentication

HEWLETT PACKARD DEVELOPMENT CO25 citations94

US11020976B2Jun 1, 2021

Supply authentication via timing challenge response

HEWLETT PACKARD DEVELOPMENT CO5 citations84

US10940693B1Mar 9, 2021

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO3 citations84

US11479046B2Oct 25, 2022

Logic circuitry for sensor data communications

HEWLETT PACKARD DEVELOPMENT CO1 citations73

US11250146B2Feb 15, 2022

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO3 citations73

US11068434B2Jul 20, 2021

Logic circuitry for a replicable print cartridge

HEWLETT PACKARD DEVELOPMENT CO3 citations73

US11048791B2Jun 29, 2021

Digitally signed data

HEWLETT PACKARD DEVELOPMENT CO3 citations73

US10956556B2Mar 23, 2021

Protecting data in memory of a consumable product

HEWLETT PACKARD DEVELOPMENT CO1 citations73

US10372898B2Aug 6, 2019

Protecting data in memory of a consumable product

HEWLETT PACKARD DEVELOPMENT CO2 citations73

US10277399B2Apr 30, 2019

Replaceable item authentication

HEWLETT PACKARD DEVELOPMENT CO2 citations73

US10205596B2Feb 12, 2019

Authenticating a consumable product based on a remaining life value

HEWLETT PACKARD DEVELOPMENT CO4 citations73

US11691429B2Jul 4, 2023

Supply authentication via timing challenge response

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US11513992B2Nov 29, 2022

Logic circuitry for print material supply cartridges

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US11513993B2Nov 29, 2022

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US11429554B2Aug 30, 2022

Logic circuitry package accessible for a time period duration while disregarding inter-integrated circuitry traffic

HEWLETT PACKARD DEVELOPMENT CO1 citations63

US11409487B2Aug 9, 2022

Power management in a logic circuitry package

HEWLETT PACKARD DEVELOPMENT CO1 citations63

US11366913B2Jun 21, 2022

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO1 citations63

US11364716B2Jun 21, 2022

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US11256654B2Feb 22, 2022

Logic circuitry for print cartridges

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US11123994B2Sep 21, 2021

Supply authentication via timing challenge response

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US11027554B2Jun 8, 2021

Supply authentication via timing challenge response

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US11014370B2May 25, 2021

Supply authentication via timing challenge response

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US10987936B2Apr 27, 2021

Supply authentication via timing challenge response

HEWLETT PACKARD DEVELOPMENT CO0 citations63

US12556407B2Feb 17, 2026

Digital signature

HEWLETT PACKARD DEVELOPMENT CO0 citations62

US12240245B2Mar 4, 2025

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO0 citations62

US11783023B2Oct 10, 2023

Digitally signed data

HEWLETT PACKARD DEVELOPMENT CO0 citations62

US11738562B2Aug 29, 2023

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO0 citations62

US11625493B2Apr 11, 2023

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO0 citations62

US11479048B2Oct 25, 2022

Logic circuitry package

HEWLETT PACKARD DEVELOPMENT CO0 citations62

US11427010B2Aug 30, 2022

Logic circuitry

HEWLETT PACKARD DEVELOPMENT CO0 citations62

US11001069B2May 11, 2021

Replaceable item authentication

HEWLETT PACKARD DEVELOPMENT CO1 citations62

US10944564B2Mar 9, 2021

Replaceable item authentication

HEWLETT PACKARD DEVELOPMENT CO0 citations62

US11407229B2Aug 9, 2022

Logic circuitry package

HEWLETT PACKARD DEVELOPMENT CO0 citations61

US10423109B2Sep 24, 2019

System and method for managing subscription and trade based printer supplies

HEWLETT PACKARD DEVELOPMENT CO1 citations61

US12476813B2Nov 18, 2025

Public key service for message authentication

HEWLETT PACKARD DEVELOPMENT CO0 citations60

US12445306B2Oct 14, 2025

Hash chain of blocks of public keys for messages

HEWLETT PACKARD DEVELOPMENT CO0 citations60

HEWLETT PACKARD DEVELOPMENT CO LP

7 patents

US9852282B2Dec 26, 2017

Protecting data in memory of a consumable product

HEWLETT PACKARD DEVELOPMENT CO LP35 citations98

US9561662B2Feb 7, 2017

Supply authentication via timing challenge response

HEWLETT PACKARD DEVELOPMENT CO LP65 citations98

US9770915B1Sep 26, 2017

Replaceable item authentication

HEWLETT PACKARD DEVELOPMENT CO LP19 citations92

US10740275B1Aug 11, 2020

Logic circuitry for use with a replaceable print apparatus component

HEWLETT PACKARD DEVELOPMENT CO LP10 citations84

US9882899B2Jan 30, 2018

Remotely authenticating a device

HEWLETT PACKARD DEVELOPMENT CO LP3 citations73

US9878555B2Jan 30, 2018

Supply authentication via timing challenge response

HEWLETT PACKARD DEVELOPMENT CO LP3 citations73

US9781305B1Oct 3, 2017

Replaceable item authentication

HEWLETT PACKARD DEVELOPMENT CO LP5 citations73

HEWLETT-PACKARD DEV COMPANY

1 patent

US9599945B2Mar 21, 2017

Methods and systems for determining authenticity of a consumable product

HEWLETT-PACKARD DEV COMPANY5 citations81

HELTERLINE BRIAN L

1 patent

US8205976B2Jun 26, 2012

Partition map

HELTERLINE BRIAN L6 citations81

SIMPSON SHELL S

1 patent

US9327510B2May 3, 2016

Verification record for a replaceable supply

SIMPSON SHELL S3 citations72

ST MICROELECTRONICS INT NV

1 patent

US12050703B1Jul 30, 2024

Method of performing an authentication method and a pairing of a peripheral device to a companion device

ST MICROELECTRONICS INT NV2 citations68

Showing the top 50 of 63 patents by PatentIndex Score.