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Inventor

SUNDAR RANGAMANI

US22 patents
⚠️ This page may combine multiple inventors who share the name “SUNDAR RANGAMANI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

WINPHORIA NETWORKS INC

8 patents
US7200112B2Apr 3, 2007

Method, system, and apparatus for a mobile station to sense and select a wireless local area network (WLAN) or a wide area mobile wireless network (WWAN)

WINPHORIA NETWORKS INC315 citations98
US7149521B2Dec 12, 2006

Method, system and apparatus for providing mobility management of a mobile station in WLAN and WWAN environments

WINPHORIA NETWORKS INC258 citations98
US6850763B1Feb 1, 2005

System and method of servicing mobile communications with a proxy switch

WINPHORIA NETWORKS INC21 citations92
US6714777B1Mar 30, 2004

System and method of managing supplementary features in the presence of a proxy switch in a mobile communications network

WINPHORIA NETWORKS INC38 citations92
US6545992B2Apr 8, 2003

System and method of selecting GGSN in a mobile communications network

WINPHORIA NETWORKS INC24 citations92
US6650909B1Nov 18, 2003

System and method of preserving point codes in a mobile network having a proxy switch

WINPHORIA NETWORKS INC16 citations84
US6625420B1Sep 23, 2003

System and method of fault management in a mobile communications network having a proxy switch

WINPHORIA NETWORKS INC17 citations84
US6801771B1Oct 5, 2004

System and method of mobility management in a mobile communications network having a proxy switch

WINPHORIA NETWORKS INC8 citations74

VISHWANATHAN KUMAR K

5 patents
US8868020B2Oct 21, 2014

Community interaction using mobile communication devices

VISHWANATHAN KUMAR K4 citations80
US8160532B2Apr 17, 2012

Community interaction using mobile communication devices

VISHWANATHAN KUMAR K11 citations80
US9489666B2Nov 8, 2016

Methods and systems for providing subsidized access to network content

VISHWANATHAN KUMAR K3 citations68
US8233894B2Jul 31, 2012

System and method for sending mobile media content to another mobile device user

VISHWANATHAN KUMAR K1 citations51
US8611853B2Dec 17, 2013

Systems and methods for facilitating instant commerce by way of a data path

VISHWANATHAN KUMAR K1 citations47

MOTOROLA INC

1 patent
US6996414B2Feb 7, 2006

System and method of group calling in mobile communications

MOTOROLA INC114 citations98

LUCENT TECHNOLOGIES INC

1 patent
US6301609B1Oct 9, 2001

Assignable associate priorities for user-definable instant messaging buddy groups

LUCENT TECHNOLOGIES INC1,486 citations97

AT & T CORP

1 patent
US6212548B1Apr 3, 2001

System and method for multiple asynchronous text chat conversations

AT & T CORP749 citations95

ENVIO NETWORKS INC

1 patent
US7751848B2Jul 6, 2010

Systems and methods for providing concurrent mobile applications to mobile communication devices

ENVIO NETWORKS INC15 citations79

WINPHORIA NETWROKS INC

1 patent
US6625449B1Sep 23, 2003

System and method of siphoning messages from a mobile network to an alternative network

WINPHORIA NETWROKS INC12 citations69

WECHAT INT PTE LTD

1 patent
US9462440B2Oct 4, 2016

Community interaction using mobile communication devices

WECHAT INT PTE LTD0 citations43

WECHAT INTERNAT PTE LTD

1 patent
US9058632B2Jun 16, 2015

Community interaction using mobile communication devices

WECHAT INTERNAT PTE LTD0 citations43

Privafy Inc

1 patent
US12579269B2Mar 17, 2026

Artificial intelligence (AI)-based system for detecting malware in endpoint devices using a multi-source data fusion and method thereof

Privafy Inc0 citations38

VERIZON PATENT & LICENSING INC

1 patent
US10552804B2Feb 4, 2020

Methods and systems for providing subsidized access to network content by way of a secure connection

VERIZON PATENT & LICENSING INC0 citations36