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.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →