Inventor · disambiguated record
Ronald E. Graf
Also filed as: GRAF RONALD E · GRAF RONALD EDWARD
16 granted patents·2 pending applications·252 citations·filing 1974–2016
94Inventor score
Top patents by PatentIndex Score
18 records- 0193US3955059AElectrostatic switchGRAF RONALD E·Filed 1974·Granted May 4, 1976·34 cites·10 claims
- 0291US4286627AVortex chamber controlling combined entrance exitGRAF RONALD E·Filed 1978·Granted Sep 1, 1981·56 cites·1 claims
- 0390US4283730ADroplet control aspects--ink evaporation reduction; low voltage contact angle control device; droplet trajectory release modes; uses for metallic ink drops in circuit wiring and press printingGRAF RONALD E·Filed 1979·Granted Aug 11, 1981·40 cites·7 claims
- 0483US4158118AElectrostatic switchGRAF RONALD E·Filed 1976·Granted Jun 12, 1979·18 cites·12 claims
- 0582US4138686AElectrostatic neutral ink printerGRAF RONALD E·Filed 1977·Granted Feb 6, 1979·23 cites·34 claims
- 0675US4249188AUncharged ink drop rastering, monitoring, and controlGRAF RONALD E·Filed 1979·Granted Feb 3, 1981·16 cites·4 claims
- 0771US4160141AElectrostatic switchGRAF RONALD E·Filed 1976·Granted Jul 3, 1979·11 cites·11 claims
- 0864US4264910AElectrostatically controlled and segmented liquid ribbonGRAF RONALD E·Filed 1979·Granted Apr 28, 1981·11 cites·10 claims
- 0963US4371753AMiniature fluid-controlled switchGRAF RONALD E·Filed 1978·Granted Feb 1, 1983·17 cites·15 claims
- 1061US4264798AElectrostatic switchGRAF RONALD E·Filed 1979·Granted Apr 28, 1981·10 cites·3 claims
- 1157US4356500ADroplet control aspects--ink evaporation reduction; low voltage contact angle control device; droplet trajectory release modes; uses for metallic ink drops in circuit wiring and press printingGRAF RONALD E·Filed 1981·Granted Oct 26, 1982·10 cites·12 claims
- 1246US7874175B2Heat engine / heat pump using centrifugal fansGRAF RONALD EDWARD·Filed 2008·Granted Jan 25, 2011·2 cites·2 claims
- 1346US2014186170A1Centrifugal Expanders And Compressors Each Using Rotors In Both Flow Going From Periphery To Center And Flow Going From Center To Periphery Their Use In Engines Both External Heat And Internal Combustion. Means to convert radial inward flow to radial outward flow with less eddy currentsGRAF RONALD E·Filed 2012·Application pending·0 cites
- 1445US8087247B2Heat engine/ heat pump using centrifugal fansGRAF RONALD EDWARD·Filed 2008·Granted Jan 3, 2012·0 cites·11 claims
- 1542US10072665B1Multistage compressors and reverse compressors comprising a series of centrifugal pumps alternating flow toward and away from axle with better flow transitions between stagesGRAF RONALD E·Filed 2016·Granted Sep 11, 2018·0 cites·2 claims
- 1640US2013167535A1Rotary Engine with Unidirectional Monatomic Gas Flow, Static Heat ExchangersGRAF RONALD EDWARD·Filed 2012·Application pending·0 cites
- 1734US4131706ASunlight admitting heat impeding panelGRAF RONALD E·Filed 1976·Granted Dec 26, 1978·3 cites·4 claims
- 1830US4205975AMethods of making a sunlight admitting heat impeding panelGRAF RONALD E·Filed 1978·Granted Jun 3, 1980·1 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →