Inventor

ZHAO MARIA QIAN

US4 patents

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

MING WEI

1 patent

US8144361B2Mar 27, 2012

Creation and placement of two-dimensional barcode stamps on printed documents for storing authentication information

MING WEI5 citations59

KONICA MINOLTA LAB USA INC

1 patent

US8027067B2Sep 27, 2011

Method for correcting skew in scanned documents

KONICA MINOLTA LAB USA INC2 citations59

KONICA MINOLTA SYSTEMS LAB INC

1 patent

US7925045B2Apr 12, 2011

Determining document authenticity in a closed-loop process

KONICA MINOLTA SYSTEMS LAB INC2 citations59

ZHAO MARIA QIAN

1 patent

US8170275B2May 1, 2012

Determining document authenticity in a closed-loop process

ZHAO MARIA QIAN0 citations42