Inventor

WALTERS KARL

US4 patents

Patents

4 patents

US10621426B2Apr 14, 2020

Authentication of printed documents

HEWLETT PACKARD DEVELOPMENT CO5 citations65

US11108918B2Aug 31, 2021

Assessing print quality using intensity histograms and perimeter lengths

HEWLETT PACKARD DEVELOPMENT CO0 citations60

US11292197B2Apr 5, 2022

Data representing a wear indicator

HEWLETT PACKARD DEVELOPMENT CO0 citations59

US10679204B2Jun 9, 2020

Imaging a package to identify contents associated with the package

HEWLETT PACKARD DEVELOPMENT CO0 citations49