Yiwu Lei

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Ottowa, CA

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Patents Grantslast 30 patents

Information Patent Grant
Document verification using dynamic document identification framework
- Patent number 8,540,158
- Issue date Sep 24, 2013
- Yiwu Lei
- G07 - CHECKING-DEVICES
Information Patent Grant
Document authentication using template matching with fast masked no...
- Patent number 8,485,559
- Issue date Jul 16, 2013
- 3M Innovative Properties Company
- Yiwu Lei
- G07 - CHECKING-DEVICES
Information Patent Grant
Identification and verification of an unknown document according to...
- Patent number 8,194,933
- Issue date Jun 5, 2012
- 3M Innovative Properties Company
- Yiwu Lei
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Document authentication using template matching with fast masked no...
- Patent number 8,096,584
- Issue date Jan 17, 2012
- 3M Innovative Properties Company
- Yiwu Lei
- G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents

Information Patent Application
SOFTWARE TOOL FOR CREATION AND MANAGEMENT OF DOCUMENT REFERENCE TEM...
- Publication number 20140046954
- Publication date Feb 13, 2014
- 3M Innovative Properties Company and a completed
- James E. MacLean
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DOCUMENT AUTHENTICATION USING TEMPLATE MATCHING WITH FAST MASKED NO...
- Publication number 20120106851
- Publication date May 3, 2012
- Yiwu Lei
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
IDENTIFICATION AND VERIFICATION OF AN UNKNOWN DOCUMENT ACCORDING TO...
- Publication number 20090154778
- Publication date Jun 18, 2009
- 3M Innovative Properties Company
- Yiwu Lei
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DOCUMENT VERIFICATION USING DYNAMIC DOCUMENT IDENTIFICATION FRAMEWORK
- Publication number 20090152357
- Publication date Jun 18, 2009
- 3M Innovative Properties Company
- Yiwu Lei
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Document authentication using template matching with fast masked no...
- Publication number 20080031542
- Publication date Feb 7, 2008
- 3M Innovative Properties Company
- Yiwu Lei
- G06 - COMPUTING CALCULATING COUNTING