Assignee
CERBERUS AG
CH·133 granted patents·3,689 citations·filing 1974–1998
Top patents by PatentIndex Score
133 records- 0193US3940753ADetection of presence or absence of flamesCERBERUS AG·Filed 1974·Granted Feb 24, 1976·56 cites·20 claims
- 0292US6006585AOptoacoustic gas sensorCERBERUS AG·Filed 1998·Granted Dec 28, 1999·124 cites·10 claims
- 0392US4390869AGas sensing signaling systemCERBERUS AG·Filed 1981·Granted Jun 28, 1983·87 cites·44 claims
- 0491US4179691AInfrared intrusion detector circuitCERBERUS AG·Filed 1977·Granted Dec 18, 1979·65 cites·19 claims
- 0590US5451931AOptical smoke detectorCERBERUS AG·Filed 1993·Granted Sep 19, 1995·123 cites·30 claims
- 0690US4746910APassive infrared intrusion detector employing correlation analysisCERBERUS AG·Filed 1986·Granted May 24, 1988·118 cites·12 claims
- 0789US4447726APassive infrared intrusion detectorCERBERUS AG·Filed 1982·Granted May 8, 1984·60 cites·15 claims
- 0889US4087688AInfrared radiation-burglary detectorCERBERUS AG·Filed 1976·Granted May 2, 1978·51 cites·15 claims
- 0989US4081680AInfrared radiation-burglary detectorCERBERUS AG·Filed 1976·Granted Mar 28, 1978·52 cites·24 claims
- 1088US4584867ADevice for selectively determining the components of gas mixtures by means of a gas sensorCERBERUS AG·Filed 1984·Granted Apr 29, 1986·51 cites·31 claims
- 1187US3994603ADetection system to determine the transmissivity of a medium with respect to radiation, particularly the light transmissivity of smoke-contaminated air, for fire detectionCERBERUS AG·Filed 1975·Granted Nov 30, 1976·51 cites·20 claims
- 1283US4627269AMethod of, and apparatus for, detecting reducing gases in a gas mixtureCERBERUS AG·Filed 1985·Granted Dec 9, 1986·56 cites·121 claims
- 1383US4249168AFlame detectorCERBERUS AG·Filed 1979·Granted Feb 3, 1981·24 cites·18 claims
- 1483US4181439ASmoke detector with a conical ring-shaped radiation regionCERBERUS AG·Filed 1977·Granted Jan 1, 1980·42 cites·27 claims
- 1582US4429224AOptical arrangement for an infrared intrusion detectorCERBERUS AG·Filed 1981·Granted Jan 31, 1984·50 cites·17 claims
- 1681US5424718AIR intrusion detector using scattering to prevent false alarmsCERBERUS AG·Filed 1994·Granted Jun 13, 1995·53 cites·7 claims
- 1781US4906978AOptical smoke detectorCERBERUS AG·Filed 1986·Granted Mar 6, 1990·69 cites·20 claims
- 1880US4757204ACeiling mounted passive infrared intrusion detector with dome shaped lensCERBERUS AG·Filed 1986·Granted Jul 12, 1988·51 cites·17 claims
- 1980US4668635AMethod of detecting reative gases in a gas mixtureCERBERUS AG·Filed 1985·Granted May 26, 1987·47 cites·16 claims
- 2080US4280058AFlame detectorCERBERUS AG·Filed 1979·Granted Jul 21, 1981·28 cites·16 claims
- 2179US5381130AOptical smoke detector with active self-monitoringCERBERUS AG·Filed 1992·Granted Jan 10, 1995·71 cites·12 claims
- 2279US4579751AMethod of producing constituent materials for gas sensorsCERBERUS AG·Filed 1984·Granted Apr 1, 1986·33 cites·55 claims
- 2379US4166955ARadiation detector and method of operating the sameCERBERUS AG·Filed 1978·Granted Sep 4, 1979·27 cites·19 claims
- 2479US4074341AInterlocked separable fire sensor constructionCERBERUS AG·Filed 1976·Granted Feb 14, 1978·35 cites·12 claims
- 2579US4052616AInfrared radiation-burglary detectorCERBERUS AG·Filed 1976·Granted Oct 4, 1977·29 cites·26 claims
- 2678US5753797APhoto-acoustic gas sensor and its manufacture and useCERBERUS AG·Filed 1996·Granted May 19, 1998·66 cites·12 claims
- 2778US4543815ADevice for the detection of foreign components in a gas and an application of the deviceCERBERUS AG·Filed 1984·Granted Oct 1, 1985·41 cites·40 claims
- 2878US4175865ASmoke detectorCERBERUS AG·Filed 1977·Granted Nov 27, 1979·34 cites·23 claims
- 2977US4418335AInfrared intrusion detector with pyroelectric sensor and charge amplifierCERBERUS AG·Filed 1981·Granted Nov 29, 1983·39 cites·12 claims
- 3077US4356478AEmploying a shape memory alloy in a fire alarm temperature sensitive elementCERBERUS AG·Filed 1980·Granted Oct 26, 1982·37 cites·12 claims
- 3176USD342213SFire detectorCERBERUS AG·Filed 1991·Granted Dec 14, 1993·21 cites·1 claims
- 3276US4642471AScattered radiation smoke detectorCERBERUS AG·Filed 1983·Granted Feb 10, 1987·38 cites·40 claims
- 3376US4315594AConnection apparatus for a fire alarmCERBERUS AG·Filed 1980·Granted Feb 16, 1982·44 cites·9 claims
- 3476US4058726ARadiation detectorCERBERUS AG·Filed 1976·Granted Nov 15, 1977·31 cites·11 claims
- 3575US4709152AInfrared intrusion detectorCERBERUS AG·Filed 1986·Granted Nov 24, 1987·37 cites·17 claims
- 3672USD277652SPassive infrared intrusion detector unitCERBERUS AG·Filed 1982·Granted Feb 19, 1985·13 cites·1 claims
- 3772US4166960ASmoke detectorCERBERUS AG·Filed 1977·Granted Sep 4, 1979·26 cites·30 claims
- 3872US3946377AMethod and apparatus to monitor conduction of sonic waves in an acoustically conductive mediumCERBERUS AG·Filed 1974·Granted Mar 23, 1976·19 cites·30 claims
- 3971US4991123AAlarm systemCERBERUS AG·Filed 1989·Granted Feb 5, 1991·44 cites·29 claims
- 4071US4567475AGas or vapor alarm system including scanning gas sensorsCERBERUS AG·Filed 1983·Granted Jan 28, 1986·37 cites·13 claims
- 4171US4551710AMethod and apparatus for reporting dangerous conditionsCERBERUS AG·Filed 1984·Granted Nov 5, 1985·30 cites·11 claims
- 4271US4547675ASmoke detector operating according to the radiation extinction principleCERBERUS AG·Filed 1981·Granted Oct 15, 1985·31 cites·58 claims
- 4370US5942976APassive infrared intrusion detector and its useCERBERUS AG·Filed 1996·Granted Aug 24, 1999·47 cites·10 claims
- 4470USD355386SFire detectorCERBERUS AG·Filed 1993·Granted Feb 14, 1995·16 cites·1 claims
- 4570US4559453ASmoke detector with a radiation source operated in a pulse-like or intermittent modeCERBERUS AG·Filed 1983·Granted Dec 17, 1985·30 cites·26 claims
- 4669US5841017APhoto-acoustic gas sensorCERBERUS AG·Filed 1997·Granted Nov 24, 1998·46 cites·20 claims
- 4769US5021766AIntrusion detection systemCERBERUS AG·Filed 1989·Granted Jun 4, 1991·36 cites·22 claims
- 4869US4612534AMethod of transmitting measuring values in a monitoring systemCERBERUS AG·Filed 1983·Granted Sep 16, 1986·29 cites·10 claims
- 4969US4379290AAlarm device with a condition sensor elementCERBERUS AG·Filed 1980·Granted Apr 5, 1983·28 cites·20 claims
- 5069US4149159AFire detection systemCERBERUS AG·Filed 1977·Granted Apr 10, 1979·24 cites·8 claims
Showing the top 50 of 133 patent records by PatentIndex Score.
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