Inventor · disambiguated record
Ralph M. Francis, Jr.
Also filed as: FRANCIS JR RALPH M
13 granted patents·209 citations·filing 1974–2010
92Inventor score
Files withFRANCIS JR RALPH M3PLASMA TECHNICS INC3MILWAUKEE RESISTOR CORP2WEBSTER ELECTRIC CO INC2STA RITE INDUSTRIES1
Top patents by PatentIndex Score
13 records- 0194US4386395APower supply for electrostatic apparatusWEBSTER ELECTRIC CO INC·Filed 1980·Granted May 31, 1983·83 cites·14 claims
- 0279US5124132ACorona discharge ozone generatorPLASMA TECHNICS INC·Filed 1991·Granted Jun 23, 1992·44 cites·12 claims
- 0368US4519684APhoto flash lampFRANCIS JR RALPH M·Filed 1983·Granted May 28, 1985·13 cites·6 claims
- 0464US8568664B2Modular quad cell electro-mechanical ozone generation deviceFRANCIS JR RALPH M·Filed 2010·Granted Oct 29, 2013·1 cites·34 claims
- 0559US7746001B2Plasma generator having a power supply with multiple leakage flux coupled transformersPLASMA TECHNICS INC·Filed 2007·Granted Jun 29, 2010·2 cites·18 claims
- 0651US4097853AMeans for distinguishing motion from noise in an intrusion alarm systemMILWAUKEE RESISTOR CORP·Filed 1976·Granted Jun 27, 1978·12 cites·24 claims
- 0748US5977521AUniversal electric chafer heaterVOLLRATH CO·Filed 1997·Granted Nov 2, 1999·18 cites·19 claims
- 0844US3944934AFalse triggering prevention circuitMILWAUKEE RESISTOR CORP·Filed 1974·Granted Mar 16, 1976·6 cites·11 claims
- 0942US5424893AGas discharge device power supply with ground fault protectionFiled 1994·Granted Jun 13, 1995·10 cites·13 claims
- 1042US4105367ALiquid level sensing circuitSTA RITE INDUSTRIES·Filed 1976·Granted Aug 8, 1978·7 cites·3 claims
- 1135US4668930ATransformer coil constructionWEBSTER ELECTRIC CO INC·Filed 1985·Granted May 26, 1987·4 cites·5 claims
- 1230US5313145APower supply for a gas discharge deviceFRANCIS JR RALPH M·Filed 1992·Granted May 17, 1994·5 cites·13 claims
- 1330US5047744AHigh voltage fluid filled transformerPLASMA TECHNICS INC·Filed 1990·Granted Sep 10, 1991·4 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →