Assignee
SENTROL INC
US·45 granted patents·1,569 citations·filing 1978–1997
Top patents by PatentIndex Score
45 records- 0197US5546074ASmoke detector system with self-diagnostic capabilities and replaceable smoke intake canopySENTROL INC·Filed 1993·Granted Aug 13, 1996·252 cites·43 claims
- 0297USD280494SHousing for a personal transmitter for use in an emergency alarm systemSENTROL INC·Filed 1983·Granted Sep 10, 1985·76 cites·1 claims
- 0394US4661804ASupervised wireless security systemSENTROL INC·Filed 1984·Granted Apr 28, 1987·114 cites·8 claims
- 0490US4536754AMagnetically retained connecting cable incorporating magnetically operated switchSENTROL INC·Filed 1983·Granted Aug 20, 1985·53 cites·19 claims
- 0590US4336518APlunger operated magnetic contact switch assemblySENTROL INC·Filed 1980·Granted Jun 22, 1982·36 cites·10 claims
- 0686US5534849ATime multiplexed, false alarm resistant magnetically actuated security systemSENTROL INC·Filed 1994·Granted Jul 9, 1996·71 cites·16 claims
- 0786US4943791AWide gap magnetic reed switch and method for manufacture of sameSENTROL INC·Filed 1989·Granted Jul 24, 1990·40 cites·8 claims
- 0886US4523184ASupervised wireless security systemSENTROL INC·Filed 1982·Granted Jun 11, 1985·57 cites·5 claims
- 0984US5428345AMethod of and apparatus for operating a security system to produce an alarm signalSENTROL INC·Filed 1994·Granted Jun 27, 1995·85 cites·33 claims
- 1083USD281865SSurface mount housing for a security system transmitterSENTROL INC·Filed 1983·Granted Dec 24, 1985·19 cites·1 claims
- 1183USD255030SHousing for a magnetic contact switchSENTROL INC·Filed 1978·Granted May 20, 1980·16 cites·1 claims
- 1281US5233323ADefeat resistant interlock/monitoring systemSENTROL INC·Filed 1992·Granted Aug 3, 1993·62 cites·17 claims
- 1379US5708414ASensitivity fault indication technique implemented in smoke detector system with self-diagnostic capabilitiesSENTROL INC·Filed 1996·Granted Jan 13, 1998·60 cites·9 claims
- 1479US5026990AMethod and apparatus for installing infrared sensors in intrusion detection systemsSENTROL INC·Filed 1989·Granted Jun 25, 1991·47 cites·46 claims
- 1578USD359701SSmoke detector coverSENTROL INC·Filed 1994·Granted Jun 27, 1995·19 cites·1 claims
- 1676US4745398ASelf-powered sensor for use in closed-loop security systemSENTROL INC·Filed 1987·Granted May 17, 1988·46 cites·9 claims
- 1775USD361732SSmoke detector housingSENTROL INC·Filed 1994·Granted Aug 29, 1995·17 cites·1 claims
- 1874USD272242SLatching housing for miniature electrical componentsSENTROL INC·Filed 1981·Granted Jan 17, 1984·13 cites·1 claims
- 1974US4409577ASwitch housing having recessed conductor terminalsSENTROL INC·Filed 1981·Granted Oct 11, 1983·17 cites·11 claims
- 2073US4456897APlunger-operated switch unitSENTROL INC·Filed 1981·Granted Jun 26, 1984·16 cites·8 claims
- 2169US4837558AGlass break detectorSENTROL INC·Filed 1987·Granted Jun 6, 1989·33 cites·15 claims
- 2268US5311024ALens arrangement for intrusion detection deviceSENTROL INC·Filed 1992·Granted May 10, 1994·43 cites·19 claims
- 2368US5192931ADual channel glass break detectorSENTROL INC·Filed 1992·Granted Mar 9, 1993·47 cites·10 claims
- 2466US5565852ASmoke detector with digital displaySENTROL INC·Filed 1994·Granted Oct 15, 1996·37 cites·22 claims
- 2564USD384875SPlunger lock mechanismSENTROL INC·Filed 1996·Granted Oct 14, 1997·12 cites·1 claims
- 2664US4371856ASwitch assembly including circuit test pointsSENTROL INC·Filed 1980·Granted Feb 1, 1983·18 cites·10 claims
- 2763US5004879ASwitch housing with resilient retainersSENTROL INC·Filed 1989·Granted Apr 2, 1991·18 cites·21 claims
- 2863US4513354AHousing for an electronic circuit boardSENTROL INC·Filed 1983·Granted Apr 23, 1985·20 cites·22 claims
- 2962US5239202AFailsafe interlock switchSENTROL INC·Filed 1990·Granted Aug 24, 1993·26 cites·20 claims
- 3062US4335270ASwitch housing incorporating flexibly attached mounting plateSENTROL INC·Filed 1980·Granted Jun 15, 1982·11 cites·5 claims
- 3161US4692752AMoisture detectorSENTROL INC·Filed 1984·Granted Sep 8, 1987·17 cites·8 claims
- 3259US4543458ASwitch and connector assembly including protective housings for jumper cableSENTROL INC·Filed 1984·Granted Sep 24, 1985·10 cites·16 claims
- 3357US5510767AGlass break detector having reduced susceptibility to false alarmsSENTROL INC·Filed 1995·Granted Apr 23, 1996·26 cites·18 claims
- 3456US5155460ASwitch housing with magnetic roller plungerSENTROL INC·Filed 1991·Granted Oct 13, 1992·14 cites·27 claims
- 3555USD281866SHousing for a transmitter for a security alarm systemSENTROL INC·Filed 1983·Granted Dec 24, 1985·6 cites·1 claims
- 3654US5635887ACompact rare earth magnet security switch assemblySENTROL INC·Filed 1996·Granted Jun 3, 1997·16 cites·22 claims
- 3751US5539381AFixed threshold and rate of rise heat detector with dynamic thermal referenceSENTROL INC·Filed 1994·Granted Jul 23, 1996·18 cites·9 claims
- 3851USD273783SExplosion-proof housing for electrical circuit componentsSENTROL INC·Filed 1981·Granted May 8, 1984·5 cites·1 claims
- 3951USD268669SCombined switch housing and integral mounting bracketSENTROL INC·Filed 1980·Granted Apr 19, 1983·5 cites·1 claims
- 4050US5777552ACurtain door alarmSENTROL INC·Filed 1995·Granted Jul 7, 1998·24 cites·12 claims
- 4150USD262618SHousing for a floor-mounted magnetic contact switchSENTROL INC·Filed 1978·Granted Jan 12, 1982·4 cites·1 claims
- 4249US5656982APlunger-operated alarm switch assemblySENTROL INC·Filed 1995·Granted Aug 12, 1997·18 cites·18 claims
- 4343US4392707ATake-off connector for security circuitSENTROL INC·Filed 1981·Granted Jul 12, 1983·10 cites·8 claims
- 4435US4525018AModular terminal housingSENTROL INC·Filed 1984·Granted Jun 25, 1985·4 cites·4 claims
- 4531US5804891ABattery saving switching mechanismSENTROL INC·Filed 1997·Granted Sep 8, 1998·11 cites·11 claims
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