Inventor
BIERBAUM CHRISTOPHER J
US14 patents
⚠️ This page may combine multiple inventors who share the name “BIERBAUM CHRISTOPHER J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BIERBAUM CHRISTOPHER J
8 patentsUS8566168B1Oct 22, 2013
Electronic payment using a proxy account number stored in a secure element
BIERBAUM CHRISTOPHER J293 citations98
US8225997B1Jul 24, 2012
Single transit card to multiple rider trip methods and architecture
BIERBAUM CHRISTOPHER J104 citations96
US8181867B1May 22, 2012
Transit card credit authorization
BIERBAUM CHRISTOPHER J49 citations93
US9552584B1Jan 24, 2017
Electronic Wallet Ready to Pay Timer
BIERBAUM CHRISTOPHER J20 citations92
US8689012B1Apr 1, 2014
Diagnostics for secure elements in a mobile device
BIERBAUM CHRISTOPHER J25 citations91
US8255159B1Aug 28, 2012
Transit payment and handset navigation integration
BIERBAUM CHRISTOPHER J16 citations83
US8126769B1Feb 28, 2012
Transit card state sequence self-help correction
BIERBAUM CHRISTOPHER J8 citations83
US9985735B1May 29, 2018
Broadcast near field communication to mobile device
BIERBAUM CHRISTOPHER J1 citations51
SPRINT COMMUNICATIONS CO
4 patentsUS7562818B1Jul 21, 2009
Mobile device having a transit card application
SPRINT COMMUNICATIONS CO82 citations98
US7967196B1Jun 28, 2011
Electronic wallet ready to pay timer
SPRINT COMMUNICATIONS CO115 citations97
US7797248B1Sep 14, 2010
Automated confirmation of transit card fund replenishment
SPRINT COMMUNICATIONS CO34 citations92
US7832634B1Nov 16, 2010
Customer care intelligent routing
SPRINT COMMUNICATIONS CO6 citations62