Assignee
HOCHIKI CO
JP·231 granted patents·13 pending applications·4,689 citations·filing 1971–2025
Top patents by PatentIndex Score
244 records- 0195US11975228B2Fire detection apparatusHOCHIKI CO·Filed 2020·Granted May 7, 2024·4 cites·6 claims
- 0294US5289275ASurveillance monitor system using image processing for monitoring fires and theftsHOCHIKI CO·Filed 1992·Granted Feb 22, 1994·213 cites·4 claims
- 0393US6073700ASprinkler headHOCHIKI CO·Filed 1998·Granted Jun 13, 2000·132 cites·11 claims
- 0493US4675661ALight-attenuation type fire detector assemblyHOCHIKI CO·Filed 1985·Granted Jun 23, 1987·92 cites·18 claims
- 0593US4661320AGas sensorHOCHIKI CO·Filed 1984·Granted Apr 28, 1987·82 cites·13 claims
- 0692US4727359AAnalog fire sensorHOCHIKI CO·Filed 1986·Granted Feb 23, 1988·118 cites·8 claims
- 0790US4871999AFire alarm system, sensor and methodHOCHIKI CO·Filed 1987·Granted Oct 3, 1989·88 cites·21 claims
- 0889US11454582B2SensorHOCHIKI CO·Filed 2020·Granted Sep 27, 2022·2 cites·13 claims
- 0988USD391185SFire detectorHOCHIKI CO·Filed 1997·Granted Feb 24, 1998·38 cites·1 claims
- 1088US5260687ACombined method of determining firesHOCHIKI CO·Filed 1992·Granted Nov 9, 1993·106 cites·11 claims
- 1187US6522254B1Smoke detector, and insect screenHOCHIKI CO·Filed 2000·Granted Feb 18, 2003·74 cites·12 claims
- 1286US11761890B2Fire detection deviceHOCHIKI CO·Filed 2021·Granted Sep 19, 2023·2 cites·8 claims
- 1386US11614396B2Fire detection deviceHOCHIKI CO·Filed 2020·Granted Mar 28, 2023·1 cites·7 claims
- 1486US10234388B2System for determining abnormality in a monitored areaHOCHIKI CO·Filed 2016·Granted Mar 19, 2019·14 cites·3 claims
- 1586US6288647B1Photoelectric smoke detector, and smoke detection section assemblyHOCHIKI CO·Filed 2000·Granted Sep 11, 2001·41 cites·44 claims
- 1686US5430433ARadio analog sensorHOCHIKI CO·Filed 1992·Granted Jul 4, 1995·97 cites·5 claims
- 1785US12274903B2Fire detection apparatusHOCHIKI CO·Filed 2024·Granted Apr 15, 2025·0 cites·5 claims
- 1885US7965175B2SounderHOCHIKI CO·Filed 2005·Granted Jun 21, 2011·22 cites·8 claims
- 1985US4317113APhotoelectric smoke sensorHOCHIKI CO·Filed 1980·Granted Feb 23, 1982·48 cites·8 claims
- 2084US12274904B2Fire detection apparatusHOCHIKI CO·Filed 2024·Granted Apr 15, 2025·0 cites·5 claims
- 2184US5576697AFire alarm systemHOCHIKI CO·Filed 1994·Granted Nov 19, 1996·100 cites·14 claims
- 2284US4331888ATemperature detecting apparatusHOCHIKI CO·Filed 1979·Granted May 25, 1982·36 cites·20 claims
- 2383US12235206B2Fire detection apparatusHOCHIKI CO·Filed 2023·Granted Feb 25, 2025·0 cites·9 claims
- 2482US5117916ASprinkler head and operation monitor thereforHOCHIKI CO·Filed 1991·Granted Jun 2, 1992·81 cites·6 claims
- 2581US12260725B2Fire detection apparatusHOCHIKI CO·Filed 2023·Granted Mar 25, 2025·1 cites·5 claims
- 2681US6111367ALight emission circuitHOCHIKI CO·Filed 1999·Granted Aug 29, 2000·52 cites·7 claims
- 2780US7746239B2Light scattering type smoke detectorHOCHIKI CO·Filed 2004·Granted Jun 29, 2010·32 cites·18 claims
- 2880US5808587AWireless access control system using a proximity member and antenna equipment thereforHOCHIKI CO·Filed 1997·Granted Sep 15, 1998·193 cites·8 claims
- 2980US5477218ASmoke detecting apparatus capable of detecting both smoke fine particlesHOCHIKI CO·Filed 1993·Granted Dec 19, 1995·91 cites·30 claims
- 3080US4491830AFire alarm systemHOCHIKI CO·Filed 1983·Granted Jan 1, 1985·49 cites·11 claims
- 3180US4306979AFoam type fire extinguishing agent for hydrophilic combustible liquidsHOCHIKI CO·Filed 1979·Granted Dec 22, 1981·41 cites·12 claims
- 3279US10360789B2Fire notification system and test method using test jig thereforHOCHIKI CO·Filed 2017·Granted Jul 23, 2019·6 cites·14 claims
- 3379US5280272AFire alarm system which distinguishes between different types of smokeHOCHIKI CO·Filed 1992·Granted Jan 18, 1994·71 cites·9 claims
- 3478US10854062B2Fire monitoring systemHOCHIKI CO·Filed 2019·Granted Dec 1, 2020·4 cites·8 claims
- 3578USD256897SSmoke detectorHOCHIKI CO·Filed 1978·Granted Sep 16, 1980·17 cites·1 claims
- 3678US4205269ARemote control variable attenuation device for an antenna amplifierHOCHIKI CO·Filed 1978·Granted May 27, 1980·19 cites·7 claims
- 3778US4066966AAlarm system utilizing a bidirectional transmission line in CATV systemHOCHIKI CO·Filed 1976·Granted Jan 3, 1978·26 cites·6 claims
- 3878US3999006AVisitor confirmation systemHOCHIKI CO·Filed 1974·Granted Dec 21, 1976·20 cites·7 claims
- 3977USD675948SHeat and smoke detectorHOCHIKI CO·Filed 2011·Granted Feb 12, 2013·25 cites·1 claims
- 4076US7896544B2Heat detector and method of manufacturing heat detecting elementHOCHIKI CO·Filed 2006·Granted Mar 1, 2011·9 cites·3 claims
- 4176US6960987B2Fire alarm system, fire sensor, fire receiver, and repeaterHOCHIKI CO·Filed 2002·Granted Nov 1, 2005·33 cites·4 claims
- 4276US5727634AFire detecting/extinguishing apparatus and water discharging nozzle thereforHOCHIKI CO·Filed 1995·Granted Mar 17, 1998·46 cites·36 claims
- 4376USD377321SThermal detectorHOCHIKI CO·Filed 1995·Granted Jan 14, 1997·21 cites·1 claims
- 4476US4897634AScattered-light smoke detector with a shielding structure of detector circuitsHOCHIKI CO·Filed 1987·Granted Jan 30, 1990·51 cites·7 claims
- 4576US4180804ARemote control device for an amplifier trap circuitHOCHIKI CO·Filed 1978·Granted Dec 25, 1979·11 cites·11 claims
- 4675USD391184SSmoke detectorHOCHIKI CO·Filed 1997·Granted Feb 24, 1998·20 cites·1 claims
- 4775USD365528SGas leak detectorHOCHIKI CO·Filed 1995·Granted Dec 26, 1995·23 cites·1 claims
- 4875US4821805AAutomatic fire extinguishing systemHOCHIKI CO·Filed 1983·Granted Apr 18, 1989·44 cites·6 claims
- 4975US4796205AFire alarm systemHOCHIKI CO·Filed 1985·Granted Jan 3, 1989·42 cites·20 claims
- 5075US4704536AGas sensor and gas detecting methodHOCHIKI CO·Filed 1984·Granted Nov 3, 1987·30 cites·7 claims
Showing the top 50 of 244 patent records by PatentIndex Score.
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