Assignee
EXTEL CORP
18 granted patents·285 citations·filing 1974–1988
Top patents by PatentIndex Score
18 records- 0173US4298786AThin film thermal print headEXTEL CORP·Filed 1979·Granted Nov 3, 1981·30 cites·5 claims
- 0271US4839802AAdaptation of computer to communication operationEXTEL CORP·Filed 1986·Granted Jun 13, 1989·55 cites·21 claims
- 0370US4037705ADescender printing system for dot matrix printerEXTEL CORP·Filed 1976·Granted Jul 26, 1977·27 cites·7 claims
- 0470US3990559AMethod and apparatus for multiple speed print rate control for dot matrix printerEXTEL CORP·Filed 1975·Granted Nov 9, 1976·24 cites·14 claims
- 0566US4850008AMethod and apparatus for discrimination between different kinds of data transmissionEXTEL CORP·Filed 1988·Granted Jul 18, 1989·40 cites·28 claims
- 0666US4206541AMethod of manufacturing thin film thermal print headsEXTEL CORP·Filed 1978·Granted Jun 10, 1980·18 cites·10 claims
- 0766US3973662AAcceleration control system for high speed printerEXTEL CORP·Filed 1975·Granted Aug 10, 1976·20 cites·24 claims
- 0863US3938641AControl system for high speed printerEXTEL CORP·Filed 1975·Granted Feb 17, 1976·16 cites·13 claims
- 0961US4242004ADot matrix printhead driverEXTEL CORP·Filed 1979·Granted Dec 30, 1980·10 cites·4 claims
- 1058US4063045ATelecommunication line switching circuitEXTEL CORP·Filed 1976·Granted Dec 13, 1977·9 cites·5 claims
- 1143US4044946ATape punch machineEXTEL CORP·Filed 1976·Granted Aug 30, 1977·9 cites·3 claims
- 1236US4363461ATape reader motor mountEXTEL CORP·Filed 1980·Granted Dec 14, 1982·8 cites·7 claims
- 1335US3954167AHigh speed printerEXTEL CORP·Filed 1974·Granted May 4, 1976·9 cites·8 claims
- 1434US4346854APrinter paper take-up and storage deviceEXTEL CORP·Filed 1980·Granted Aug 31, 1982·5 cites·7 claims
- 1532US4392754AMagnetic dot matrix printing method and apparatusEXTEL CORP·Filed 1982·Granted Jul 12, 1983·1 cites·48 claims
- 1628US3964673ATape punch machineEXTEL CORP·Filed 1974·Granted Jun 22, 1976·2 cites·19 claims
- 1724US4019676ATape punch machineEXTEL CORP·Filed 1975·Granted Apr 26, 1977·0 cites·8 claims
- 1817US4392755AMagnetic dot matrix printingEXTEL CORP·Filed 1982·Granted Jul 12, 1983·2 cites·22 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →