Inventor · disambiguated record
I-Hsiang Yu
Also filed as: YU I-HSIANG
10 granted patents·930 citations·filing 1990–2007
93Inventor score
Top patents by PatentIndex Score
10 records- 0195US6535746B1Method and apparatus supporting short message services in a wireless number portability environmentVERIZON LAB INC·Filed 2000·Granted Mar 18, 2003·151 cites·4 claims
- 0290US5204902ACellular telephony authentication arrangementAT & T BELL LAB·Filed 1991·Granted Apr 20, 1993·189 cites·11 claims
- 0382US6338140B1Method and system for validating subscriber identities in a communications networkIRIDIUM LLC·Filed 1998·Granted Jan 8, 2002·206 cites·31 claims
- 0482US5764745AApparatus and method for local number portability using nongeographic subscriber numbersGTE LABORATORIES INC·Filed 1995·Granted Jun 9, 1998·125 cites·28 claims
- 0576US5787347AMethod and apparatus for selecting a cellular system for communication with a cellular telephone in a roaming areaGTE LABORATORIES INC·Filed 1995·Granted Jul 28, 1998·88 cites·10 claims
- 0671US7720082B2System and method for short message service and instant messaging continuityNEUSTAR INC·Filed 2007·Granted May 18, 2010·5 cites·33 claims
- 0762US6445785B1Methods and apparatus for local number portability in telecommunication systemsVERIZON LAB INC·Filed 1995·Granted Sep 3, 2002·46 cites·39 claims
- 0861US6192241B1Worldwide wireless subscriber access serviceVERIZON LAB INC·Filed 1997·Granted Feb 20, 2001·51 cites·14 claims
- 0957US6240296B1Method and apparatus for supporting short message services in a wireless number portability environmentVERIZON LAB INC·Filed 1998·Granted May 29, 2001·32 cites·20 claims
- 1048US5018187AMobile telephone intrasystem and intersystem enhanced handoff method and apparatus for limiting trunk switching connectionsAT & T BELL LAB·Filed 1990·Granted May 21, 1991·37 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →