Inventor
MARKHAM RONALD C
US20 patents
⚠️ This page may combine multiple inventors who share the name “MARKHAM RONALD C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ACCESS BUSINESS GROUP INT LLC
9 patentsUS7180248B2Feb 20, 2007
Inductively coupled ballast circuit
ACCESS BUSINESS GROUP INT LLC363 citations99
US6825620B2Nov 30, 2004
Inductively coupled ballast circuit
ACCESS BUSINESS GROUP INT LLC518 citations99
US6673250B2Jan 6, 2004
Radio frequency identification system for a fluid treatment system
ACCESS BUSINESS GROUP INT LLC471 citations99
US7385357B2Jun 10, 2008
Inductively coupled ballast circuit
ACCESS BUSINESS GROUP INT LLC409 citations97
US9299493B2Mar 29, 2016
Inductively coupled ballast circuit
ACCESS BUSINESS GROUP INT LLC11 citations93
US9590456B2Mar 7, 2017
Inductively coupled ballast circuit
ACCESS BUSINESS GROUP INT LLC7 citations84
US9397524B2Jul 19, 2016
Inductively coupled ballast circuit
ACCESS BUSINESS GROUP INT LLC3 citations84
US10014722B2Jul 3, 2018
Inductively coupled ballast circuit
ACCESS BUSINESS GROUP INT LLC2 citations73
US9482440B2Nov 1, 2016
Humidifier with ultraviolet disinfection
ACCESS BUSINESS GROUP INT LLC4 citations69
AMWAY CORP
8 patentsUS6436299B1Aug 20, 2002
Water treatment system with an inductively coupled ballast
AMWAY CORP553 citations99
US5853572ADec 29, 1998
Home water purification system
AMWAY CORP117 citations97
US5536395AJul 16, 1996
Home water purification system with automatic disconnecting of radiant energy source
AMWAY CORP154 citations97
US5611918AMar 18, 1997
Electronic driver for water treatment system UV bulb
AMWAY CORP58 citations96
US5698091ADec 16, 1997
Home water purification system with filter end of life monitor
AMWAY CORP76 citations95
US5738780AApr 14, 1998
Voltage converter for water treatment system UV bulb
AMWAY CORP28 citations92
US5401394AMar 28, 1995
Water treatment system ultraviolet bulb voltage monitor circuit
AMWAY CORP29 citations92
US5324423AJun 28, 1994
UV bulb intensity control for water treatment system
AMWAY CORP48 citations92