Elmwood Sensors, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 292

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5296834 Thermostatic switch and bimetallic disc assembly thereforJun 10, 93Mar 22, 94[H01H]
5159308 Thermostatic switch and contact arm thereforFeb 05, 92Oct 27, 92[H01H]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6559752 Creepless snap acting bimetallic switch having flexible contact membersExpiredMay 24, 00May 06, 03[H01H]
6498559 Creepless snap acting bimetallic switch having step adjacent its bimetallic elementExpiredMay 24, 00Dec 24, 02[H01H]
5929742 Trip-free, manual reset thermostatExpiredMar 27, 97Jul 27, 99[H01H]
5703560 Thermostat with one-piece reset mechanism and contact assemblyExpiredSep 11, 95Dec 30, 97[H01H]
4958148 Contrast enhancing transparent touch panel deviceExpiredJan 22, 88Sep 18, 90[G09B]
4952901 Bimetallic disc assembly for thermostatic switch and disc retainer thereforExpiredDec 22, 89Aug 28, 90[H01H]
4821954 Thermally activated snap-action valveExpiredMay 31, 88Apr 18, 89[G05D]
4754252 Thermostatic switch with improved cap disc assemblyExpiredJun 02, 87Jun 28, 88[H01H]
4746892 Thermally actuated latch for electrical circuitsExpiredApr 17, 87May 24, 88[H01H]
4625075 Patterned conductive ink touch panelExpiredSep 25, 84Nov 25, 86[G08C]
4623866 Cap and bracket assembly for thermostatic switch and method of manufacturing sameExpiredJul 02, 85Nov 18, 86[H01H]
4544987 Magnetically operated AC switching device with delay-on-dropoutExpiredSep 19, 83Oct 01, 85[H01H]
4472705 Thermostatic switch with thermal overrideExpiredJan 03, 83Sep 18, 84[H01H]
4401965 Thermal switchExpiredApr 12, 82Aug 30, 83[H01H]
4384401 Method for forming a heater elementExpiredOct 19, 81May 24, 83[H01C]
4367452 Thermostatic switch constructionExpiredFeb 11, 82Jan 04, 83[H01H]
D266084 Thermostatic switchExpiredApr 14, 80Sep 07, 82[D130]
4339738 Single pole double throw thermostatic switchExpiredApr 30, 81Jul 13, 82[H01H]
4320286 Heater elementExpiredDec 07, 79Mar 16, 82[H05B]
4317098 Grounded thermostat switchExpiredJan 28, 80Feb 23, 82[H01H]

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