HEARTH TECHNOLOGIES INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F24C OTHER DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION 825
 
  
 
F23M CONSTRUCTIONAL DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR 313
 
  
 
F23C METHODS OR APPARATUS FOR COMBUSTION USING FLUENT FUEL 219
 
  
 
F24D DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR 218
 
  
 
F23D BURNERS 131
 
  
 
F23L AIR SUPPLY; DRAUGHT-INDUCING; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS 116
 
  
 
F23N REGULATING OR CONTROLLING COMBUSTION 120
 
  
 
F23Q IGNITION 116
 
  
 
F24B DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES 19

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE40590 Universal non-porous fiber reinforced combustion chamber fireplaceAug 23, 01Dec 02, 08[F23M]
6543698 Fireplace make-up air heat exchange systemApr 10, 00Apr 08, 03[F24D]
6048195 Hollow ceramic fiber burner-log elementSep 27, 96Apr 11, 00[F23M, F24C]
5941237 Universal non-porous fiber reinforced combustion chamber fireplaceJan 19, 96Aug 24, 99[F23M, F24C]
5931661 Adjustable air/gas shutter valveFeb 26, 98Aug 03, 99[F23D]
5890485 Dancing flame control system for gas fireplacesSep 27, 96Apr 06, 99[F23N, F23C]
5647340 Convertible dual direct-vented fireplaceJan 19, 96Jul 15, 97[F24C]
5613487 Fireplace door latch systemJan 16, 96Mar 25, 97[F24C]
5452708 Universal horizontal-vertical (H-V) direct-vented gas heating unitNov 24, 93Sep 26, 95[F23C]
5347983 Draft hood attachment deviceMar 25, 93Sep 20, 94[F24B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5775408 Integrated gas fireplace and air conditioner systemExpiredJan 19, 96Jul 07, 98[F25B]
5737888 Versatile surround trim structureExpiredJan 19, 96Apr 14, 98[E04F]
5688568 Enhanced glowing logs and methodExpiredSep 27, 96Nov 18, 97[F24C]
5479916 Low profile gas burner fireplace tableExpiredJan 06, 95Jan 02, 96[F24C]
5429495 Method and apparatus for enhancing the length and color of gas flamesExpiredMar 25, 93Jul 04, 95[F23Q]
5016609 Direct vented multi glass side fireplaceExpiredApr 27, 90May 21, 91[F24B, F24C]
5000162 Clean burning glowing ember and gas log burner systemExpiredApr 27, 90Mar 19, 91[F24C]
4875464 Clean burning gas log burner systemExpiredAug 18, 88Oct 24, 89[F24C]
4852548 Universal fireplace assemblyExpiredMay 31, 88Aug 01, 89[F24B]
D299527 Front for a fireplace insert or similar articleExpiredJul 24, 87Jan 24, 89[]
4793322 Direct-vented gas fireplaceExpiredNov 06, 86Dec 27, 88[F24C]
4766876 Wood stoveExpiredJul 24, 87Aug 30, 88[F24C]
4424792 Induced draft system for residential heatersExpiredMar 29, 82Jan 10, 84[F24J, F24C]
4408594 Fireplace heated grateExpiredMay 04, 81Oct 11, 83[F24B]

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