Inventor
HUGHES DENNIS R
US24 patents
⚠️ This page may combine multiple inventors who share the name “HUGHES DENNIS R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AOS HOLDING CO
16 patentsUS6036480AMar 14, 2000
Combustion burner for a water heater
AOS HOLDING CO113 citations94
US6557501B2May 6, 2003
Water heater having flue damper with airflow apparatus
AOS HOLDING CO18 citations92
US6269780B1Aug 7, 2001
Water heater heat trap
AOS HOLDING CO24 citations92
US5347956ASep 20, 1994
Water heater with integral mixing valve
AOS HOLDING CO37 citations92
US6286465B1Sep 11, 2001
Water heater flue system
AOS HOLDING CO39 citations91
US6745724B2Jun 8, 2004
Water heater having flue damper with airflow apparatus
AOS HOLDING CO21 citations89
US6202935B1Mar 20, 2001
Combined potable water heater and hydronic heating system
AOS HOLDING CO26 citations89
US7354244B2Apr 8, 2008
Blower and method of conveying fluids
AOS HOLDING CO30 citations83
US7277627B2Oct 2, 2007
Rooftop water heater
AOS HOLDING CO12 citations83
US6422179B2Jul 23, 2002
Water heater flue system
AOS HOLDING CO16 citations82
US6262401B1Jul 17, 2001
Gold-plated water heater element and method of making same
AOS HOLDING CO6 citations73
US6948454B2Sep 27, 2005
Airflow apparatus
AOS HOLDING CO7 citations70
US7438023B2Oct 21, 2008
Heating device having a thermal cut-off circuit for a fuel line and method of operating the same
AOS HOLDING CO6 citations61
US6679014B2Jan 20, 2004
Rooftop water heater
AOS HOLDING CO3 citations60
US6591788B2Jul 15, 2003
Rooftop water heater
AOS HOLDING CO5 citations60
US8047164B2Nov 1, 2011
Removable heat exchanger for a gas fired water heater
AOS HOLDING CO1 citations52
SMITH CORP A O
6 patentsUS4823865AApr 25, 1989
Turbulator construction for a heat exchanger
SMITH CORP A O59 citations96
US6205291B1Mar 20, 2001
Scale-inhibiting heating element and method of making same
SMITH CORP A O39 citations92
US4817564AApr 4, 1989
Water heater construction
SMITH CORP A O46 citations92
US4577681AMar 25, 1986
Heat exchanger having a turbulator construction
SMITH CORP A O40 citations92
US4951614AAug 28, 1990
Water heater construction
SMITH CORP A O16 citations73
US4911108AMar 27, 1990
Water heater construction
SMITH CORP A O13 citations73