Assignee
TIE COMMUNICATIONS
US·20 granted patents·460 citations·filing 1974–1990
Top patents by PatentIndex Score
20 records- 0192US4173714ACommunication circuit with combined power feed and data transmission over a phantom channelTIE COMMUNICATIONS·Filed 1977·Granted Nov 6, 1979·91 cites·12 claims
- 0285US4203011AComputer controlled key telephone station setTIE COMMUNICATIONS·Filed 1978·Granted May 13, 1980·32 cites·25 claims
- 0383US4740955ACommunications system having voice and digital data capability and employing a plurality of voice and data buses in main service unit and serial packetized transmission to and from telephonesTIE COMMUNICATIONS·Filed 1986·Granted Apr 26, 1988·101 cites·19 claims
- 0481US4577310AStation interface for digital electronic telephone switching system having centralized digital audio processorTIE COMMUNICATIONS·Filed 1984·Granted Mar 18, 1986·38 cites·15 claims
- 0576US4338495AElectronic key telephone systemsTIE COMMUNICATIONS·Filed 1979·Granted Jul 6, 1982·21 cites·85 claims
- 0674US4140877AMuliple highway time division multiplexed PABX communication systemTIE COMMUNICATIONS·Filed 1977·Granted Feb 20, 1979·20 cites·10 claims
- 0766USD299459STelephone setTIE COMMUNICATIONS·Filed 1987·Granted Jan 17, 1989·11 cites·1 claims
- 0863US4667142AThree-way power source circuitTIE COMMUNICATIONS·Filed 1985·Granted May 19, 1987·35 cites·6 claims
- 0961USD299458STelephone setTIE COMMUNICATIONS·Filed 1987·Granted Jan 17, 1989·9 cites·1 claims
- 1059US4757521ASynchronization method and apparatus for a telephone switching systemTIE COMMUNICATIONS·Filed 1984·Granted Jul 12, 1988·14 cites·12 claims
- 1156USD307418STelephone baseTIE COMMUNICATIONS·Filed 1988·Granted Apr 24, 1990·7 cites·1 claims
- 1253US5081329AKey assembly, switch assembly and method of making sameTIE COMMUNICATIONS·Filed 1990·Granted Jan 14, 1992·18 cites·20 claims
- 1352USD299460STelephone setTIE COMMUNICATIONS·Filed 1987·Granted Jan 17, 1989·6 cites·1 claims
- 1452US4715062ASpeakerphone control circuit having low gain states and method for controlling gain of speakerphoneTIE COMMUNICATIONS·Filed 1985·Granted Dec 22, 1987·17 cites·68 claims
- 1549US4341927AData transmission apparatusTIE COMMUNICATIONS·Filed 1980·Granted Jul 27, 1982·14 cites·8 claims
- 1642US4894860ATrunk interface circuitry for telephone systemsTIE COMMUNICATIONS·Filed 1988·Granted Jan 16, 1990·11 cites·12 claims
- 1740US4679228ASpeakerphone sensing circuitTIE COMMUNICATIONS·Filed 1985·Granted Jul 7, 1987·6 cites·6 claims
- 1835US4674118ATelephone line hold and hold release apparatusTIE COMMUNICATIONS·Filed 1985·Granted Jun 16, 1987·5 cites·16 claims
- 1933US4773068ADual channel transmission method and apparatus with inherent channel identification and extractionTIE COMMUNICATIONS·Filed 1984·Granted Sep 20, 1988·3 cites·6 claims
- 2030US3963879ATelephone dial assemblyTIE COMMUNICATIONS·Filed 1974·Granted Jun 15, 1976·1 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when TIE COMMUNICATIONS files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →