Assignee
PACIFIC BELL
US·42 granted patents·1,912 citations·filing 1984–1996
Top patents by PatentIndex Score
42 records- 0198US4742263APiezoelectric switchPACIFIC BELL·Filed 1987·Granted May 3, 1988·153 cites·5 claims
- 0295US4819126APiezoelectic relay module to be utilized in an appliance or the likePACIFIC BELL·Filed 1988·Granted Apr 4, 1989·76 cites·10 claims
- 0392US4852154APay-per-view CATV systemPACIFIC BELL·Filed 1986·Granted Jul 25, 1989·296 cites·9 claims
- 0490US4916349ALatching piezoelectric relayPACIFIC BELL·Filed 1988·Granted Apr 10, 1990·40 cites·4 claims
- 0589US4673246APatch unit for fiber optic distribution networkPACIFIC BELL·Filed 1984·Granted Jun 16, 1987·82 cites·1 claims
- 0686US5327485ATelephone lottery play systemPACIFIC BELL·Filed 1992·Granted Jul 5, 1994·256 cites·19 claims
- 0786US4807280ACross-connect switchPACIFIC BELL·Filed 1987·Granted Feb 21, 1989·131 cites·13 claims
- 0881US5023612AIllegal sequence detection and protection circuitPACIFIC BELL·Filed 1989·Granted Jun 11, 1991·68 cites·6 claims
- 0980US5093600APiezo-electric relayPACIFIC BELL·Filed 1987·Granted Mar 3, 1992·25 cites·3 claims
- 1080US4898648AMethod for providing a strengthened conductive circuit patternPACIFIC BELL·Filed 1988·Granted Feb 6, 1990·30 cites·5 claims
- 1178US5062104ADigital service unit for connecting data processing equipment to a telephone system based computer networkPACIFIC BELL·Filed 1988·Granted Oct 29, 1991·60 cites·15 claims
- 1276US4750169ATelephone system and method for transmitting digital informationPACIFIC BELL·Filed 1986·Granted Jun 7, 1988·45 cites·10 claims
- 1373US4730311ARemote multiplexer for digital telephone systemPACIFIC BELL·Filed 1985·Granted Mar 8, 1988·40 cites·7 claims
- 1470US5216668AModulated nonblocking parallel banyan networkPACIFIC BELL·Filed 1991·Granted Jun 1, 1993·60 cites·5 claims
- 1570US4845736ACross-connect switch and method for providing test access theretoPACIFIC BELL·Filed 1988·Granted Jul 4, 1989·45 cites·6 claims
- 1669US4893340AMultijunction unit apparatus for use in a digital networkPACIFIC BELL·Filed 1988·Granted Jan 9, 1990·35 cites·18 claims
- 1767US5848144ASwitch cutover with paced transitionPACIFIC BELL·Filed 1996·Granted Dec 8, 1998·47 cites·23 claims
- 1866US5124943ADigital network utilizing telephone linesPACIFIC BELL·Filed 1988·Granted Jun 23, 1992·35 cites·16 claims
- 1966US4946244AFiber optic distribution system and method of using samePACIFIC BELL·Filed 1989·Granted Aug 7, 1990·27 cites·14 claims
- 2065US4909895ASystem and method for providing a conductive circuit pattern utilizing thermal oxidationPACIFIC BELL·Filed 1989·Granted Mar 20, 1990·22 cites·24 claims
- 2159US5386525ASystem for providing application programs with direct addressability into a shared dataspacePACIFIC BELL·Filed 1991·Granted Jan 31, 1995·56 cites·18 claims
- 2257US5132965ANonblocking parallel banyan networkPACIFIC BELL·Filed 1990·Granted Jul 21, 1992·24 cites·8 claims
- 2357US4890279AMultiplexer and computer network using the samePACIFIC BELL·Filed 1988·Granted Dec 26, 1989·22 cites·3 claims
- 2456US4907253ACross-connected switch having means for removing switching modules without interrupting servicePACIFIC BELL·Filed 1988·Granted Mar 6, 1990·17 cites·5 claims
- 2556US4795917ALow power high voltage driver circuitPACIFIC BELL·Filed 1987·Granted Jan 3, 1989·11 cites·29 claims
- 2655US5452206AMethod for generating documentation for computer softwarePACIFIC BELL·Filed 1991·Granted Sep 19, 1995·40 cites·8 claims
- 2755US5058163AInterface unit for transferring digital data between time-domain multiplexed communication linksPACIFIC BELL·Filed 1988·Granted Oct 15, 1991·22 cites·13 claims
- 2849US4738869APhotoselective electroless plating method employing UV-absorbing substratesPACIFIC BELL·Filed 1986·Granted Apr 19, 1988·12 cites·7 claims
- 2949US4696063AOptical fiber bandwidth limiting methodPACIFIC BELL·Filed 1985·Granted Sep 22, 1987·11 cites·2 claims
- 3047US5357556ASystem and method for telephone network testingPACIFIC BELL·Filed 1992·Granted Oct 18, 1994·28 cites·18 claims
- 3146US5065394APacket routing switchPACIFIC BELL·Filed 1989·Granted Nov 12, 1991·12 cites·3 claims
- 3246US4924460AOffice control unit apparatus for use in a digital networkPACIFIC BELL·Filed 1988·Granted May 8, 1990·14 cites·14 claims
- 3346US4748661ACircuit for translating telephone numbersPACIFIC BELL·Filed 1986·Granted May 31, 1988·15 cites·6 claims
- 3446US4716562ATelephone systemPACIFIC BELL·Filed 1986·Granted Dec 29, 1987·12 cites·21 claims
- 3542US4871225AFiber optic distribution networkPACIFIC BELL·Filed 1987·Granted Oct 3, 1989·12 cites·16 claims
- 3638US4811332AApparatus and method for TDM data switchingPACIFIC BELL·Filed 1986·Granted Mar 7, 1989·7 cites·9 claims
- 3735US4899340AError correcting code and error correcting circuit using the samePACIFIC BELL·Filed 1988·Granted Feb 6, 1990·6 cites·9 claims
- 3835US4868620AHigh-voltage pull-up devicePACIFIC BELL·Filed 1988·Granted Sep 19, 1989·6 cites·7 claims
- 3935US4860334ASystem for detecting and locating defective crosspoint switchesPACIFIC BELL·Filed 1988·Granted Aug 22, 1989·3 cites·12 claims
- 4028US4706241ALow speed gate circuitPACIFIC BELL·Filed 1985·Granted Nov 10, 1987·2 cites·16 claims
- 4127US4611100ABunching block for McCulloh circuits and method of operationPACIFIC BELL·Filed 1984·Granted Sep 9, 1986·1 cites·19 claims
- 4217US5216853ATelephone enclosurePACIFIC BELL·Filed 1990·Granted Jun 8, 1993·6 cites·6 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →