HOCHIKI KABUSHIKI KAISHA

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 1876
 
  
 
G01K MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR 244
 
  
 
A62C FIRE-FIGHTING 126
 
  
 
B05B SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 163
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS198
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
G01T MEASUREMENT OF NUCLEAR OR X-RADIATION 151
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6373393 Flame detection device and flame detectionMay 27, 99Apr 16, 02[G08B]
6329922 Fire detector and noise de-influence methodJul 24, 00Dec 11, 01[G08B]
6249220 Detected information display system in fire detecting systemNov 23, 99Jun 19, 01[G08B]
D412296 Photoelectric smoke detectorNov 12, 98Jul 27, 99[1005]
5859706 Photoelectric smoke detector and disaster monitoring system using the photoelectric smoke detectorJul 19, 96Jan 12, 99[G01N, G01B]
5751216 Projected beam-type smoke detector and receiving unitSep 15, 95May 12, 98[G08B]
D391184 Smoke detectorMar 21, 97Feb 24, 98[1005]
D391185 Fire detectorMar 21, 97Feb 24, 98[1005]
D387297 Fire detectorOct 23, 96Dec 09, 97[1005]
D386101 Fire detectorOct 23, 96Nov 11, 97[1005]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6313548 Power switching deviceExpiredDec 07, 99Nov 06, 01[H02J]
6073700 Sprinkler headExpiredJul 15, 98Jun 13, 00[A62C]
6044912 Sprinkler headExpiredMar 02, 99Apr 04, 00[A62C]
5670938 Fire alarm deviceExpiredMay 16, 95Sep 23, 97[G08B]
D377321 Thermal detectorExpiredOct 06, 95Jan 14, 97[]
D365528 Gas leak detectorExpiredFeb 07, 95Dec 26, 95[]
D358109 Fire detectorExpiredJun 23, 94May 09, 95[]
D357202 Fire detectorExpiredJun 23, 94Apr 11, 95[]
D357203 Fire detectorExpiredJun 23, 94Apr 11, 95[]
5327119 Ionizing smoke sensorExpiredJul 24, 92Jul 05, 94[G08B]
5160916 Ionization type smoke sensorExpiredDec 20, 90Nov 03, 92[G08B]
5148148 Radio alarm systemExpiredDec 20, 90Sep 15, 92[G08B]
5065150 Monitoring apparatus for disaster preventionExpiredJul 14, 89Nov 12, 91[H04B]
4937562 Moisture-proof ionization smoke detectorExpiredDec 09, 88Jun 26, 90[G08B]
4914425 Highly sensitive smoke detectorExpiredDec 16, 88Apr 03, 90[G08B]
4909329 Fire supervising system and extinguishing target determining systemExpiredAug 24, 87Mar 20, 90[A62C]
4897634 Scattered-light smoke detector with a shielding structure of detector circuitsExpiredDec 22, 87Jan 30, 90[G08B]
4871999 Fire alarm system, sensor and methodExpiredMay 18, 87Oct 03, 89[G08B]
4851819 Photoelectric smoke detector with permanently fixed insect netExpiredMar 15, 88Jul 25, 89[G08B]
4838698 Extinction type detectorExpiredMar 31, 87Jun 13, 89[G01N]

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