Inventor · disambiguated record
William Christopher Duffy
Also filed as: DUFFY WILLIAM · DUFFY WILLIAM C · DUFFY WILLIAM CHRISTOPHER
13 granted patents·6 pending applications·129 citations·filing 2001–2024
91Inventor score
Files withDUFFY WILLIAM CHRISTOPHER7VAUGHANAIR CANADA ULC4DURASYSTEMS BARRIERS INC3DUFFY WILLIAM C2DUFFY WILLIAM1
Top patents by PatentIndex Score
19 records- 0194US11333390B2Fire-rated ventilation duct and improvements thereinDURASYSTEMS BARRIERS INC·Filed 2020·Granted May 17, 2022·4 cites·26 claims
- 0294US9074788B2Fire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materialsDUFFY WILLIAM CHRISTOPHER·Filed 2012·Granted Jul 7, 2015·18 cites·14 claims
- 0390US9557071B2Fire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materialsDUFFY WILLIAM CHRISTOPHER·Filed 2015·Granted Jan 31, 2017·5 cites·12 claims
- 0490US7195290B2Apparatus for a fire-rated ductDUFFY WILLIAM CHRISTOPHER·Filed 2003·Granted Mar 27, 2007·49 cites·16 claims
- 0589USRE49087EFire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materialsDURASYSTEMS BARRIERS INC·Filed 2019·Granted May 31, 2022·4 cites·14 claims
- 0684US8276319B2Fire resistant access panel for ducts and air handling equipmentDUFFY WILLIAM CHRISTOPHER·Filed 2007·Granted Oct 2, 2012·15 cites·13 claims
- 0783US11441810B2Pre-fabricated modular fire-rated conduit assemblyDURASYSTEMS BARRIERS INC·Filed 2017·Granted Sep 13, 2022·3 cites·9 claims
- 0883US8178781B2Apparatus for protecting cable trays, conduits and/or cablesDUFFY WILLIAM CHRISTOPHER·Filed 2009·Granted May 15, 2012·22 cites·6 claims
- 0982US9976768B2Fire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materialsDuraSystems·Filed 2017·Granted May 22, 2018·3 cites·13 claims
- 1081US2025052445A1Fire-rated ventilation duct and improvements thereinVAUGHANAIR CANADA ULC·Filed 2024·Application pending·0 cites
- 1178US10024569B2Fire-rated modular duct assembly and improvements thereinDUFFY WILLIAM CHRISTOPHER·Filed 2013·Granted Jul 17, 2018·6 cites·20 claims
- 1277USRE50587EFire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materialsVAUGHANAIR CANADA ULC·Filed 2022·Granted Sep 16, 2025·0 cites·19 claims
- 1374US12152802B2Fire-rated ventilation duct and improvements thereinVAUGHANAIR CANADA ULC·Filed 2022·Granted Nov 26, 2024·0 cites·13 claims
- 1473US12188679B2Pre-fabricated modular fire-rated conduit assemblyVAUGHANAIR CANADA ULC·Filed 2022·Granted Jan 7, 2025·0 cites·12 claims
- 1559US2010108438A1Panel for acoustic damping and fire protection applicationsDUFFY WILLIAM CHRISTOPHER·Filed 2008·Application pending·0 cites
- 1654US2006143987A1Fire resistant access panel for ducts and air handling equipmentDUFFY WILLIAM C·Filed 2006·Application pending·0 cites
- 1752US2007251723A1Method and apparatus for a modular fire-barrier systemDUFFY WILLIAM C·Filed 2006·Application pending·0 cites
- 1845US2002184827A1Fire resistant access panel for ducts and air handling equipmentFiled 2001·Application pending·0 cites
- 1935US2016271289A1Ultraviolet air sanitizing fixture for commercial aircraftDUFFY WILLIAM·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →