Clifford L. Hansen

Follow

Person

Rochester, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Personal identification number security enhancement
- Patent number 9,235,702
- Issue date Jan 12, 2016
- International Business Machines Corporation
- Todd W. Arnold
- G07 - CHECKING-DEVICES
Information Patent Grant
Personal identification number security enhancement
- Patent number 8,639,938
- Issue date Jan 28, 2014
- International Business Machines Corporation
- Todd W. Arnold
- G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents

Information Patent Application
PERSONAL IDENTIFICATION NUMBER SECURITY ENHANCEMENT
- Publication number 20130073863
- Publication date Mar 21, 2013
- International Business Machines Corporation
- Todd W. Arnold
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
PERSONAL IDENTIFICATION NUMBER SECURITY ENHANCEMENT
- Publication number 20120284526
- Publication date Nov 8, 2012
- International Business Machines Corporation
- Todd W. Arnold
- G06 - COMPUTING CALCULATING COUNTING