Inventor
CHEN PENNY
US3 patents
Patents
3 patentsUS7171460B2Jan 30, 2007
Method and apparatus for integrating billing and authentication functions in local area and wide area wireless data networks
TATARA SYSTEMS INC188 citations97
US7239632B2Jul 3, 2007
Method and apparatus for converging local area and wide area wireless data networks
TATARA SYSTEMS INC51 citations94
US7782848B2Aug 24, 2010
Method and apparatus for converging local area and wide area wireless data networks
TATARA SYSTEMS INC18 citations91