Assignee
ROLM CO
US·42 granted patents·2,164 citations·filing 1990–1996
Top patents by PatentIndex Score
42 records- 0196US5276731AMethod and apparatus for handling incoming telephone callsROLM CO·Filed 1991·Granted Jan 4, 1994·454 cites·18 claims
- 0292US5287352AMethod and apparatus to reduce register overhead in a serial digital interfaceROLM CO·Filed 1992·Granted Feb 15, 1994·137 cites·9 claims
- 0390US5561703ASystem and method for integration of a paging server into a private branch exchange environmentROLM CO·Filed 1994·Granted Oct 1, 1996·236 cites·18 claims
- 0488US5502761AApparatus and method for relaying calling information to a pager or alternate telephoneROLM CO·Filed 1994·Granted Mar 26, 1996·174 cites·16 claims
- 0587USD340059SInterface to a telephone setROLM CO·Filed 1992·Granted Oct 5, 1993·30 cites·1 claims
- 0684US5452347ADual-line telephone bridging device that gives remote telephones access to communications featuresROLM CO·Filed 1993·Granted Sep 19, 1995·103 cites·11 claims
- 0780US5268957AAutomatic call-back "camp-on" service for communication systemsROLM CO·Filed 1991·Granted Dec 7, 1993·103 cites·11 claims
- 0879US5287498AMessage transmitting system wherein recipient site is determined using information concerning the relationship between the sender and recipient sitesROLM CO·Filed 1991·Granted Feb 15, 1994·97 cites·8 claims
- 0976US5430730AMethod for building a sub-network in a distributed voice messaging systemROLM CO·Filed 1993·Granted Jul 4, 1995·124 cites·20 claims
- 1075USD340057SAdd-on console for a telephone setROLM CO·Filed 1992·Granted Oct 5, 1993·17 cites·1 claims
- 1175US5241586AVoice and text annotation of a call log databaseROLM CO·Filed 1991·Granted Aug 31, 1993·71 cites·12 claims
- 1273US5349640AOption bus adapterROLM CO·Filed 1993·Granted Sep 20, 1994·67 cites·14 claims
- 1373US5274696AProtocol for transmitting messages in a networkROLM CO·Filed 1991·Granted Dec 28, 1993·62 cites·6 claims
- 1468US5231375AApparatus and method for detecting theft of electronic equipmentROLM CO·Filed 1991·Granted Jul 27, 1993·46 cites·16 claims
- 1566US5594781AMobile telephone connection transferROLM CO·Filed 1996·Granted Jan 14, 1997·56 cites·1 claims
- 1664USD346384STelephone setROLM CO·Filed 1992·Granted Apr 26, 1994·11 cites·1 claims
- 1763USD340058SInterface to a telephone setROLM CO·Filed 1992·Granted Oct 5, 1993·11 cites·1 claims
- 1859US5278976AMethod for detecting infinite loops by setting a flag indicating execution of an idle task having lower priority than executing application tasksROLM CO·Filed 1990·Granted Jan 11, 1994·51 cites·6 claims
- 1958US5572698ASystem and method for allocating memory resources where the category of a memory resource determines where on a circular stack a pointer to the memory resource is placedROLM CO·Filed 1994·Granted Nov 5, 1996·29 cites·10 claims
- 2058US5278897ASmart internodal transfer for subscriber access in multinode voice messaging systemsROLM CO·Filed 1992·Granted Jan 11, 1994·35 cites·5 claims
- 2157US5440616AMethod and apparatus for interconnecting a messaging system and a private branch exchangeROLM CO·Filed 1994·Granted Aug 8, 1995·31 cites·6 claims
- 2256US5563881AMultihop distribution listsROLM CO·Filed 1995·Granted Oct 8, 1996·39 cites·19 claims
- 2356US5524243AParallel programming of field programmable gate array devicesROLM CO·Filed 1995·Granted Jun 4, 1996·33 cites·21 claims
- 2450USD340054STelephone setROLM CO·Filed 1992·Granted Oct 5, 1993·6 cites·1 claims
- 2547USD346385STelephone setROLM CO·Filed 1992·Granted Apr 26, 1994·6 cites·1 claims
- 2646US5425124ALightpipe providing wide angle outputROLM CO·Filed 1994·Granted Jun 13, 1995·12 cites·5 claims
- 2742US5473672AInband messaging system interface of a PBXROLM CO·Filed 1994·Granted Dec 5, 1995·12 cites·7 claims
- 2841US5345495AData diagnostics with leds on the face of a telephoneROLM CO·Filed 1992·Granted Sep 6, 1994·11 cites·12 claims
- 2941US5239453ADC to DC converter employing a free-running single stage blocking oscillatorROLM CO·Filed 1992·Granted Aug 24, 1993·12 cites·15 claims
- 3039US5440262AHigh-efficiency Ring/MWL generatorROLM CO·Filed 1993·Granted Aug 8, 1995·14 cites·10 claims
- 3138US5359648AEscape sequence using monitoring of control signal statesROLM CO·Filed 1992·Granted Oct 25, 1994·10 cites·17 claims
- 3238US5345589ACentralized monitoring of activity in a distributed processing systemROLM CO·Filed 1993·Granted Sep 6, 1994·15 cites·12 claims
- 3338US5222102ADigital phased locked loop apparatus for bipolar transmission systemsROLM CO·Filed 1991·Granted Jun 22, 1993·7 cites·21 claims
- 3436USD345979STelephone setROLM CO·Filed 1992·Granted Apr 12, 1994·2 cites·1 claims
- 3535US5263083AMethod and apparatus for sharing speakerphone processor among multiple usersROLM CO·Filed 1990·Granted Nov 16, 1993·8 cites·11 claims
- 3635US5249186AApparatus for detecting the start of frame in bipolar transmission systemsROLM CO·Filed 1991·Granted Sep 28, 1993·9 cites·20 claims
- 3733USD345978STelephone setROLM CO·Filed 1992·Granted Apr 12, 1994·1 cites·1 claims
- 3833US5251256AIndependent hysteresis apparatus for tone detectionROLM CO·Filed 1991·Granted Oct 5, 1993·10 cites·20 claims
- 3929US5339360AMethod of synchronizing LEDS between a digital telephone and remote optionsROLM CO·Filed 1992·Granted Aug 16, 1994·3 cites·19 claims
- 4029US5287399AMethod and apparatus for processing downlink digital voice dataROLM CO·Filed 1992·Granted Feb 15, 1994·1 cites·20 claims
- 4128US5559964ACable connector keyingROLM CO·Filed 1994·Granted Sep 24, 1996·4 cites·14 claims
- 4215US5283893AMethod for sorting objects in a sequentially addressed arrayROLM CO·Filed 1990·Granted Feb 1, 1994·4 cites·2 claims
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