Assignee
GREENHECK FAN CORP
US·34 granted patents·6 pending applications·589 citations·filing 1980–2025
Top patents by PatentIndex Score
40 records- 0191US7320636B2Exhaust fan assembly having flexible couplingGREENHECK FAN CORP·Filed 2004·Granted Jan 22, 2008·69 cites·20 claims
- 0289US7682231B2Exhaust fan assemblyGREENHECK FAN CORP·Filed 2004·Granted Mar 23, 2010·32 cites·14 claims
- 0388US7048499B2In-line centrifugal fanGREENHECK FAN CORP·Filed 2001·Granted May 23, 2006·68 cites·24 claims
- 0487US7547249B2Exhaust fan assembly having H-out nozzleGREENHECK FAN CORP·Filed 2005·Granted Jun 16, 2009·13 cites·16 claims
- 0585US9505092B2Methods for fan assemblies and fan wheel assembliesGREENHECK FAN CORP·Filed 2013·Granted Nov 29, 2016·16 cites·15 claims
- 0681US9636722B2Exhaust fan assemblyGREENHECK FAN CORP·Filed 2013·Granted May 2, 2017·6 cites·20 claims
- 0780US11668314B2Efficient fan assemblyGREENHECK FAN CORP·Filed 2021·Granted Jun 6, 2023·1 cites·18 claims
- 0880US7758305B2Centrifugal fan with turbulence inducing inlet bellGREENHECK FAN CORP·Filed 2006·Granted Jul 20, 2010·16 cites·15 claims
- 0979US6797041B2Two stage air filterGREENHECK FAN CORP·Filed 2002·Granted Sep 28, 2004·33 cites·71 claims
- 1077US9976560B2Mixed flow fan assemblyGREENHECK FAN CORP·Filed 2014·Granted May 22, 2018·4 cites·16 claims
- 1175US4373509AHigh efficiency ventilation systemGREENHECK FAN CORP·Filed 1980·Granted Feb 15, 1983·40 cites·9 claims
- 1274US5915960ADirect gas-fired heating and ventilation system with passive control damperGREENHECK FAN CORP·Filed 1997·Granted Jun 29, 1999·61 cites·11 claims
- 1373US6994743B2Two stage air filterGREENHECK FAN CORP·Filed 2004·Granted Feb 7, 2006·19 cites·15 claims
- 1473US5238453AIntegral pivot damper bladeGREENHECK FAN CORP·Filed 1992·Granted Aug 24, 1993·36 cites·5 claims
- 1571US12595806B2Efficient fan assemblyGREENHECK FAN CORP·Filed 2024·Granted Apr 7, 2026·0 cites·12 claims
- 1669US12253096B2Fan assemblyGREENHECK FAN CORP·Filed 2023·Granted Mar 18, 2025·0 cites·26 claims
- 1769US11971047B2Efficient fan assemblyGREENHECK FAN CORP·Filed 2023·Granted Apr 30, 2024·0 cites·24 claims
- 1867US12085299B2Airflow balancing valve for HVAC systemsGREENHECK FAN CORP·Filed 2022·Granted Sep 10, 2024·0 cites·20 claims
- 1967US11231040B2Fan assemblyGREENHECK FAN CORP·Filed 2018·Granted Jan 25, 2022·1 cites·8 claims
- 2065US10125783B2Fan assembly and fan wheel assembliesGREENHECK FAN CORP·Filed 2013·Granted Nov 13, 2018·2 cites·23 claims
- 2165US2025180036A1Fan assemblyGREENHECK FAN CORP·Filed 2025·Application pending·0 cites
- 2264US2026022707A1Three-dimensional airfoil and method of constructionGREENHECK FAN CORP·Filed 2025·Application pending·0 cites
- 2362US10024329B2Fan assemblyGREENHECK FAN CORP·Filed 2013·Granted Jul 17, 2018·3 cites·20 claims
- 2462US7018289B2Latch assembly for damperGREENHECK FAN CORP·Filed 2003·Granted Mar 28, 2006·15 cites·68 claims
- 2562US5809993AExhaust fan with dry lubricant coatingGREENHECK FAN CORP·Filed 1997·Granted Sep 22, 1998·25 cites·8 claims
- 2662US5673681AVentilation system for conveyor ovenGREENHECK FAN CORP·Filed 1996·Granted Oct 7, 1997·43 cites·7 claims
- 2761US10184488B2Fan housing having flush mounted stator bladesGREENHECK FAN CORP·Filed 2013·Granted Jan 22, 2019·2 cites·5 claims
- 2861US6050258AExhaust fan with dry lubricant coatingGREENHECK FAN CORP·Filed 1998·Granted Apr 18, 2000·24 cites·14 claims
- 2960US2024247823A1Exhaust fanGREENHECK FAN CORP·Filed 2023·Application pending·0 cites
- 3059US11168898B2Indirect gas furnaceGREENHECK FAN CORP·Filed 2019·Granted Nov 9, 2021·0 cites·24 claims
- 3159US6644337B2Damper assembly having improved strength characteristicsGREENHECK FAN CORP·Filed 2001·Granted Nov 11, 2003·14 cites·23 claims
- 3258US6251153B1Centrifugal air filterGREENHECK FAN CORP·Filed 1999·Granted Jun 26, 2001·27 cites·18 claims
- 3357US11913460B2Exhaust fanGREENHECK FAN CORP·Filed 2021·Granted Feb 27, 2024·0 cites·20 claims
- 3455US6505502B1Method and apparatus for determining the efficiency of an air preconditioning moduleGREENHECK FAN CORP·Filed 2001·Granted Jan 14, 2003·10 cites·36 claims
- 3551US10330329B2Indirect gas furnaceGREENHECK FAN CORP·Filed 2016·Granted Jun 25, 2019·0 cites·24 claims
- 3649US2024295226A1Exhaust fanGREENHECK FAN CORP·Filed 2024·Application pending·0 cites
- 3748US2024248457A1System for curb cap size selection in an exhaust fanGREENHECK FAN CORP·Filed 2023·Application pending·0 cites
- 3840US2007202795A1Induced flow fan with outlet flow measurementGREENHECK FAN CORP·Filed 2006·Application pending·0 cites
- 3935US11892098B2Airflow balancing valve with actuatorGREENHECK FAN CORP·Filed 2021·Granted Feb 6, 2024·0 cites·20 claims
- 4029US5879815AChannel for fire damper assemblyGREENHECK FAN CORP·Filed 1997·Granted Mar 9, 1999·9 cites·4 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →