1
Antonio DeSimone, Elizabeth A Hohne, Rangamani Sundar, Vishwanathan Thiagarajan, Kumar K Vishwanathan: System and method for multiple asynchronous text chat conversations. AT & T, William Ryan, April 3, 2001: US06212548 (356 worldwide citation)

A plurality of users communicate in a plurality of real-time text conversations (e.g., “chat sessions”) in a client-server message processing environment using messages including a conversation index, a conversation-initiator ID and a list of message recipients. Each conversation is maintained at cl ...


2
Rangamani Sundar, Murali Aravamudan, Shamim A Naqvi, Prakash R Iyer, Kumar K Vishwanathan, Gurudutt Upendra Pai: 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, April 3, 2007: US07200112 (144 worldwide citation)

A method, system and apparatus for internetworking WWAN and WLAN are disclosed. More specifically, a method, system, and apparatus for a mobile station to sense and select a WLAN or a WWAN are disclosed. A mobile station may communicate according to an 802.xx wireless local area network air interfac ...


3
Rangamani Sundar, Murali Aravamudan, Shamim A Naqvi, Prakash R Iyer, Kumar K Vishwanathan, Gurudutt Upendra Pai: Method, system and apparatus for providing mobility management of a mobile station in WLAN and WWAN environments. Winphoria Networks, December 12, 2006: US07149521 (126 worldwide citation)

A method, system and apparatus for internetworking WLAN and WWAN environments are disclosed. More specifically, a method, system and apparatus for providing mobility management of a mobile station in WLAN and WWAN environments are disclosed. Roaming and handoffs are discussed.


4
Kumar K Vishwanathan, Rangamani Sundar, Murali Aravamudan, Shamim A Naqvi, Kajamalai G Ramakrishnan, Prakash R Iyer: System and method of group calling in mobile communications. Motorola, Lalita W Pace, February 7, 2006: US06996414 (50 worldwide citation)

Information is retrieved from a list of members of a group call group. Based on the retrieved information, a group call is established between first and second mobile stations (MS). The first MS is served by a first base station controller (BSC) and the second MS is served by a second BSC. Voice dat ...


5
Murali Aravamudan, Andreas Constantine Papanicolaou, Kumar K Vishwanathan: Collaborative browsing of the internet. AT&T, May 4, 2004: US06732145 (40 worldwide citation)

The present invention is directed to a technique for collaborative browsing among users at two or more different PCs. In an illustrative system in accordance with the present invention, copies of selected URLs are shared among collaborating PCs, each of which uses the URL to retrieve the correspondi ...


6
Murali Aravamudan, Andreas Constantine Papanicolaou, Kumar K Vishwanathan: Collaborative browsing. AT&T, February 6, 2007: US07174364 (19 worldwide citation)

The present invention is directed to a technique for collaborative browsing among users at two or more different PCs. In an illustrative system in accordance with the present invention, copies of selected URLs are shared among collaborating PCs, each of which uses the URL to retrieve the correspondi ...


7
Shamim A Naqvi, Kumar K Vishwanathan, Rangamani Sundar, Murali Aravamudan: System and method of managing supplementary features in the presence of a proxy switch in a mobile communications network. Winphoria Networks, March 30, 2004: US06714777 (17 worldwide citation)

A proxy switch, communication methods, and communication logic for use in a mobile network are described. A proxy switch is deployed between a base station subsystem and a mobile station center. It receives signaling messages and either retransmits them, blocks them, converts them, or siphons them t ...


8
Shamim A Naqvi, Kumar K Vishwanathan, Rangamani Sundar, Murali Aravamudan: System and method of servicing mobile communications with a proxy switch. Winphoria Networks, February 1, 2005: US06850763 (10 worldwide citation)

The present invention provides a proxy switch, communication methods, and communication logic for use in a mobile network. A proxy switch is deployed between a base station subsystem and a mobile station center. The proxy switch receives signaling messages and either retransmits them, blocks them, c ...


9
Kumar K Vishwanathan, Prakash R Iyer, Rangamani Sundar: Systems and methods for providing concurrent mobile applications to mobile communication devices. ENVIO Networks, Edell Shapiro & Finnan, July 6, 2010: US07751848 (9 worldwide citation)

A system is provided that enables the delivery of multiple concurrent mobile applications to a mobile communication device. A concurrency application server interfaces to a mobile switching center to obtain call parameters in order to determine a context of a mobile device call. The concurrency appl ...


10
Shamim A Naqvi, Kumar K Vishwanathan, Rangamani Sundar, Murali Aravamudan: System and method of preserving point codes in a mobile network having a proxy switch. Winphoria Networks, Hale and Dorr, November 18, 2003: US06650909 (9 worldwide citation)

A proxy switch, communication methods, and communication logic for use in a mobile network are described. A proxy switch is deployed between a base station subsystem and a mobile station center. It receives signaling messages and either retransmits them, blocks them, converts them, or siphons them t ...