Inventor · disambiguated record
Ronald C. Markham
Also filed as: MARKHAM RONALD C
20 granted patents·1 pending application·2,970 citations·filing 1993–2017
97Inventor score
Top patents by PatentIndex Score
21 records- 0199US7180248B2Inductively coupled ballast circuitACCESS BUSINESS GROUP INT LLC·Filed 2004·Granted Feb 20, 2007·363 cites·4 claims
- 0299US6825620B2Inductively coupled ballast circuitACCESS BUSINESS GROUP INT LLC·Filed 2002·Granted Nov 30, 2004·518 cites·59 claims
- 0399US6673250B2Radio frequency identification system for a fluid treatment systemACCESS BUSINESS GROUP INT LLC·Filed 2002·Granted Jan 6, 2004·471 cites·48 claims
- 0499US6436299B1Water treatment system with an inductively coupled ballastAMWAY CORP·Filed 2000·Granted Aug 20, 2002·553 cites·59 claims
- 0598US8618749B2Inductively coupled ballast circuitKUENNEN ROY W·Filed 2011·Granted Dec 31, 2013·52 cites·25 claims
- 0698US8222827B2Inductively coupled ballast circuitKUENNEN ROY W·Filed 2008·Granted Jul 17, 2012·57 cites·18 claims
- 0797US7385357B2Inductively coupled ballast circuitACCESS BUSINESS GROUP INT LLC·Filed 2006·Granted Jun 10, 2008·409 cites·7 claims
- 0897US5536395AHome water purification system with automatic disconnecting of radiant energy sourceAMWAY CORP·Filed 1993·Granted Jul 16, 1996·154 cites·26 claims
- 0996US9590456B2Inductively coupled ballast circuitACCESS BUSINESS GROUP INT LLC·Filed 2016·Granted Mar 7, 2017·7 cites·20 claims
- 1096US9299493B2Inductively coupled ballast circuitACCESS BUSINESS GROUP INT LLC·Filed 2013·Granted Mar 29, 2016·11 cites·20 claims
- 1195US5853572AHome water purification systemAMWAY CORP·Filed 1997·Granted Dec 29, 1998·117 cites·6 claims
- 1292US9397524B2Inductively coupled ballast circuitACCESS BUSINESS GROUP INT LLC·Filed 2016·Granted Jul 19, 2016·3 cites·29 claims
- 1392US5698091AHome water purification system with filter end of life monitorAMWAY CORP·Filed 1996·Granted Dec 16, 1997·76 cites·8 claims
- 1490US10014722B2Inductively coupled ballast circuitACCESS BUSINESS GROUP INT LLC·Filed 2017·Granted Jul 3, 2018·2 cites·29 claims
- 1588US5611918AElectronic driver for water treatment system UV bulbAMWAY CORP·Filed 1995·Granted Mar 18, 1997·58 cites·11 claims
- 1683US5324423AUV bulb intensity control for water treatment systemAMWAY CORP·Filed 1993·Granted Jun 28, 1994·48 cites·11 claims
- 1781US8940085B2Humidifier with ultraviolet disinfectionMARKHAM RONALD C·Filed 2012·Granted Jan 27, 2015·10 cites·18 claims
- 1877US9482440B2Humidifier with ultraviolet disinfectionACCESS BUSINESS GROUP INT LLC·Filed 2014·Granted Nov 1, 2016·4 cites·34 claims
- 1970US5738780AVoltage converter for water treatment system UV bulbAMWAY CORP·Filed 1996·Granted Apr 14, 1998·28 cites·2 claims
- 2067US5401394AWater treatment system ultraviolet bulb voltage monitor circuitAMWAY CORP·Filed 1993·Granted Mar 28, 1995·29 cites·12 claims
- 2155US2017038083A1Humidifier with ultraviolet disinfectionACCESS BUSINESS GROUP INT LLC·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →