Assignee
SOUTHWEST BELL TECH RESOURCES
US·20 granted patents·3,166 citations·filing 1991–1996
Top patents by PatentIndex Score
20 records- 0199US5321849ASystem for controlling signal level at both ends of a transmission link based on a detected valveSOUTHWEST BELL TECH RESOURCES·Filed 1991·Granted Jun 14, 1994·283 cites·62 claims
- 0298US5678198ASystem for controlling signal level at both ends of a transmission link, based upon a detected valueSOUTHWEST BELL TECH RESOURCES·Filed 1995·Granted Oct 14, 1997·203 cites·71 claims
- 0398US5548809ASpectrum sharing communications system and system for monitoring available spectrumSOUTHWEST BELL TECH RESOURCES·Filed 1992·Granted Aug 20, 1996·300 cites·28 claims
- 0498US5457811ASystem for controlling signal level at both ends of a transmission sink based on a detected valueSOUTHWEST BELL TECH RESOURCES·Filed 1994·Granted Oct 10, 1995·157 cites·16 claims
- 0595US5592541AApparatus and method for forwarding incoming callsSOUTHWEST BELL TECH RESOURCES·Filed 1995·Granted Jan 7, 1997·304 cites·33 claims
- 0694US5790828ADisk meshing and flexible storage mapping with enhanced flexible cachingSOUTHWEST BELL TECH RESOURCES·Filed 1996·Granted Aug 4, 1998·296 cites·18 claims
- 0794US5655217ASpectrum sharing communications system for monitoring available spectrumSOUTHWEST BELL TECH RESOURCES·Filed 1995·Granted Aug 5, 1997·153 cites·12 claims
- 0892US5835129AMultipoint digital video composition and bridging system for video conferencing and other applicationsSOUTHWEST BELL TECH RESOURCES·Filed 1996·Granted Nov 10, 1998·161 cites·41 claims
- 0991US5974133AMethod and apparatus for facilitating communication across multiple locationsSOUTHWEST BELL TECH RESOURCES·Filed 1996·Granted Oct 26, 1999·195 cites·66 claims
- 1090US5799073AApparatus and method for recording call related dataSOUTHWEST BELL TECH RESOURCES·Filed 1995·Granted Aug 25, 1998·186 cites·45 claims
- 1190US5452306AOut-of-band embedded overhead architecture for a transmission networkSOUTHWEST BELL TECH RESOURCES·Filed 1993·Granted Sep 19, 1995·104 cites·44 claims
- 1289US5680446AAdvanced intelligent network screeningSOUTHWEST BELL TECH RESOURCES·Filed 1995·Granted Oct 21, 1997·119 cites·32 claims
- 1389US5594784AApparatus and method for transparent telephony utilizing speech-based signaling for initiating and handling callsSOUTHWEST BELL TECH RESOURCES·Filed 1993·Granted Jan 14, 1997·191 cites·39 claims
- 1485US5530845AStorage control subsystem implemented with an application program on a computerSOUTHWEST BELL TECH RESOURCES·Filed 1995·Granted Jun 25, 1996·170 cites·48 claims
- 1583US5701583ALand-based wireless communications system having a scanned directional antennaSOUTHWEST BELL TECH RESOURCES·Filed 1995·Granted Dec 23, 1997·67 cites·42 claims
- 1677US5995839APrivate radiotelephone system with enhanced telephone system interfaceSOUTHWEST BELL TECH RESOURCES·Filed 1996·Granted Nov 30, 1999·101 cites·16 claims
- 1774US5422876AOut-of-band loopback control schemeSOUTHWEST BELL TECH RESOURCES·Filed 1993·Granted Jun 6, 1995·75 cites·35 claims
- 1872US5488737ALand-based wireless communications system having a scanned directional antennaSOUTHWEST BELL TECH RESOURCES·Filed 1992·Granted Jan 30, 1996·77 cites·40 claims
- 1950US5477518ADetachable storage assemblySOUTHWEST BELL TECH RESOURCES·Filed 1992·Granted Dec 19, 1995·10 cites·43 claims
- 2044US5671385AMemory subsystem with disk meshing, controller meshing, and efficient cache buffer lookupSOUTHWEST BELL TECH RESOURCES·Filed 1994·Granted Sep 23, 1997·14 cites·7 claims
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