Inventor

KASSELMAN PIETER R

IE3 patents

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

ZHANG ZHENGYOU

1 patent

US8675926B2Mar 18, 2014

Distinguishing live faces from flat surfaces

ZHANG ZHENGYOU35 citations92

BARBOUR MARC R

1 patent

US8418237B2Apr 9, 2013

Resource access based on multiple credentials

BARBOUR MARC R6 citations78

MICROSOFT CORP

1 patent

US8904509B2Dec 2, 2014

Resource access based on multiple credentials

MICROSOFT CORP3 citations61