Assignee
NITTAN CO LTD
JP·76 granted patents·1,529 citations·filing 1973–2008
Top patents by PatentIndex Score
76 records- 0189US4668939AApparatus for monitoring disturbances in environmental conditionsNITTAN CO LTD·Filed 1986·Granted May 26, 1987·86 cites·6 claims
- 0286USD319798SFire detectorNITTAN CO LTD·Filed 1988·Granted Sep 10, 1991·25 cites·1 claims
- 0386US4774502AEnvironmental abnormality detection apparatusNITTAN CO LTD·Filed 1987·Granted Sep 27, 1988·71 cites·4 claims
- 0486US4755797AFire alarm apparatusNITTAN CO LTD·Filed 1987·Granted Jul 5, 1988·82 cites·5 claims
- 0584US6011478ASmoke sensor and monitor control systemNITTAN CO LTD·Filed 1998·Granted Jan 4, 2000·107 cites·15 claims
- 0682US7714290B2Flame detectorNITTAN CO LTD·Filed 2008·Granted May 11, 2010·15 cites·9 claims
- 0782USD382217SFire detectorNITTAN CO LTD·Filed 1996·Granted Aug 12, 1997·25 cites·1 claims
- 0882US4469953ACombination ionization and photoelectric smoke detectorNITTAN CO LTD·Filed 1982·Granted Sep 4, 1984·49 cites·5 claims
- 0981USD426482SFire detectorNITTAN CO LTD·Filed 1999·Granted Jun 13, 2000·25 cites·1 claims
- 1081USD316828SFire detectorNITTAN CO LTD·Filed 1988·Granted May 14, 1991·22 cites·1 claims
- 1181US4505600ATemperature sensorNITTAN CO LTD·Filed 1983·Granted Mar 19, 1985·40 cites·7 claims
- 1280US4658243ASurveillance control apparatus for security systemNITTAN CO LTD·Filed 1984·Granted Apr 14, 1987·40 cites·23 claims
- 1380USD271670SFire and smoke detectorNITTAN CO LTD·Filed 1981·Granted Dec 6, 1983·19 cites·1 claims
- 1479US4538137AFire detectorNITTAN CO LTD·Filed 1983·Granted Aug 27, 1985·38 cites·9 claims
- 1578US4216377ALight scattering smoke detectorNITTAN CO LTD·Filed 1978·Granted Aug 5, 1980·28 cites·5 claims
- 1677US7248173B2Smoke detectorNITTAN CO LTD·Filed 2005·Granted Jul 24, 2007·17 cites·8 claims
- 1776US4525700AFire alarm systemNITTAN CO LTD·Filed 1983·Granted Jun 25, 1985·34 cites·6 claims
- 1875US6300876B1Fire detectorNITTAN CO LTD·Filed 2000·Granted Oct 9, 2001·31 cites·18 claims
- 1971USD621287SFire detectorNITTAN CO LTD·Filed 2008·Granted Aug 10, 2010·17 cites·1 claims
- 2070US4524351ASmoke detectorNITTAN CO LTD·Filed 1982·Granted Jun 18, 1985·32 cites·8 claims
- 2168USD450008SFire detectorNITTAN CO LTD·Filed 2001·Granted Nov 6, 2001·16 cites·1 claims
- 2265US4638304AEnvironmental abnormality detecting apparatusNITTAN CO LTD·Filed 1984·Granted Jan 20, 1987·24 cites·11 claims
- 2364US6195014B1Fire detectorNITTAN CO LTD·Filed 2000·Granted Feb 27, 2001·16 cites·14 claims
- 2464US4988988ACentral monitoring and alarming systemNITTAN CO LTD·Filed 1989·Granted Jan 29, 1991·27 cites·7 claims
- 2564US4947162ATerminal device for a monitoring and control systemNITTAN CO LTD·Filed 1989·Granted Aug 7, 1990·26 cites·7 claims
- 2663USD332231SFire detectorNITTAN CO LTD·Filed 1991·Granted Jan 5, 1993·14 cites·1 claims
- 2763US4831361AEnvironmental abnormality alarm apparatusNITTAN CO LTD·Filed 1988·Granted May 16, 1989·25 cites·2 claims
- 2860US4700079ALight-transmission type smoke detector having a spiral optical pathNITTAN CO LTD·Filed 1986·Granted Oct 13, 1987·23 cites·5 claims
- 2960US4518952ASensor test circuit of an alarm systemNITTAN CO LTD·Filed 1983·Granted May 21, 1985·19 cites·8 claims
- 3059US5830412ASensor device, and disaster prevention system and electronic equipment each having sensor device incorporated thereinNITTAN CO LTD·Filed 1996·Granted Nov 3, 1998·28 cites·10 claims
- 3159US4199755AOptical smoke detectorNITTAN CO LTD·Filed 1978·Granted Apr 22, 1980·14 cites·2 claims
- 3258US4929093AFire detector having a protective coverNITTAN CO LTD·Filed 1989·Granted May 29, 1990·23 cites·6 claims
- 3357US6105077ATransmitting system with address polling for providing a control signal to open/close switchNITTAN CO LTD·Filed 1998·Granted Aug 15, 2000·35 cites·11 claims
- 3457US4924417AEnvironmental abnormality alarm apparatusNITTAN CO LTD·Filed 1988·Granted May 8, 1990·27 cites·4 claims
- 3557US4581604AAtmospheric abnormality detection alarm systemNITTAN CO LTD·Filed 1983·Granted Apr 8, 1986·18 cites·6 claims
- 3656US6057775AIonization smoke detectorNITTAN CO LTD·Filed 1997·Granted May 2, 2000·25 cites·10 claims
- 3756USD331547SFire detectorNITTAN CO LTD·Filed 1990·Granted Dec 8, 1992·8 cites·1 claims
- 3856US4733224ADetector system with multiple sensors each sensing different danger conditionsNITTAN CO LTD·Filed 1986·Granted Mar 22, 1988·19 cites·12 claims
- 3955US5189631ASmoke density monitor systemNITTAN CO LTD·Filed 1990·Granted Feb 23, 1993·22 cites·11 claims
- 4053US6693529B2Fire alarm systemNITTAN CO LTD·Filed 2001·Granted Feb 17, 2004·8 cites·19 claims
- 4152US4745399ADevice for generating an alarm signal in the event of an environmental abnormalityNITTAN CO LTD·Filed 1986·Granted May 17, 1988·16 cites·7 claims
- 4252US4575711AAlarm terminal deviceNITTAN CO LTD·Filed 1983·Granted Mar 11, 1986·14 cites·18 claims
- 4352US4489312ASelective test circuit for fire detectorsNITTAN CO LTD·Filed 1982·Granted Dec 18, 1984·23 cites·4 claims
- 4450US4067695AGas sensing elementNITTAN CO LTD·Filed 1977·Granted Jan 10, 1978·13 cites·7 claims
- 4549US4785284AFire monitoring systemNITTAN CO LTD·Filed 1987·Granted Nov 15, 1988·14 cites·4 claims
- 4649US3935492AIonization smoke detectorNITTAN CO LTD·Filed 1973·Granted Jan 27, 1976·8 cites·4 claims
- 4748US5227640AApparatus for detecting a flame using weighted time intervalsNITTAN CO LTD·Filed 1992·Granted Jul 13, 1993·15 cites·9 claims
- 4848US4697172AFire alarm systemNITTAN CO LTD·Filed 1985·Granted Sep 29, 1987·14 cites·2 claims
- 4947USD433644SFire detectorNITTAN CO LTD·Filed 1999·Granted Nov 14, 2000·7 cites·1 claims
- 5047US4701625ASeparation type detector with addressed selectionNITTAN CO LTD·Filed 1986·Granted Oct 20, 1987·13 cites·13 claims
Showing the top 50 of 76 patent records by PatentIndex Score.
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