Inventor · disambiguated record
James U. Lemke
Also filed as: LEMKE JAMES U · LEMKE JAMES UNDERWOOD
61 granted patents·4 pending applications·1,096 citations·filing 1974–2018
99Inventor score
Top patents by PatentIndex Score
65 records- 0199US7861679B2Cylinder and piston assemblies for opposed piston enginesACHATES POWER INC·Filed 2009·Granted Jan 4, 2011·91 cites·20 claims
- 0299US7360511B2Opposed piston engineACHATES POWER INC·Filed 2006·Granted Apr 22, 2008·54 cites·44 claims
- 0397US7156056B2Two-cycle, opposed-piston internal combustion engineACHATES POWER LLC·Filed 2004·Granted Jan 2, 2007·53 cites·53 claims
- 0496US7549401B2Two-cycle, opposed-piston internal combustion engineACHATES POWER INC·Filed 2005·Granted Jun 23, 2009·21 cites·54 claims
- 0596US4669011ASlider assembly with dynamically positionable transducerEASTMAN KODAK CO·Filed 1985·Granted May 26, 1987·73 cites·4 claims
- 0695US7784436B2Two-cycle, opposed-piston internal combustion engineACHATES POWER INC·Filed 2006·Granted Aug 31, 2010·23 cites·34 claims
- 0795US7640910B2Opposed piston internal-combustion engine with hypocycloidal drive and generator apparatusACHATES POWER INC·Filed 2007·Granted Jan 5, 2010·32 cites·19 claims
- 0895US4388659ATape recorder apparatus capable of playing back selected information while recording other informationEASTMAN KODAK CO·Filed 1981·Granted Jun 14, 1983·51 cites·5 claims
- 0994US8286596B2Two-cycle, opposed-piston internal combustion engineLEMKE JAMES U·Filed 2011·Granted Oct 16, 2012·8 cites·12 claims
- 1093US7591235B2Opposed piston engine with piston complianceACHATES POWER INC·Filed 2008·Granted Sep 22, 2009·15 cites·19 claims
- 1193US7270108B2Opposed piston, homogeneous charge pilot ignition engineACHATES POWER LLC·Filed 2005·Granted Sep 18, 2007·28 cites·37 claims
- 1292US4339775AFast frame rate augmentationEASTMAN TECHNOLOGY·Filed 1980·Granted Jul 13, 1982·78 cites·3 claims
- 1391US8276552B2Opposed piston engineLEMKE JAMES U·Filed 2010·Granted Oct 2, 2012·6 cites·21 claims
- 1488US8746190B2Two stroke opposed-piston engines with compression release for engine brakingLEMKE JAMES U·Filed 2011·Granted Jun 10, 2014·8 cites·17 claims
- 1588US8539918B2Multi-cylinder opposed piston enginesLEMKE JAMES U·Filed 2010·Granted Sep 24, 2013·13 cites·6 claims
- 1688US7546819B2Two-stroke, opposed-piston internal combustion engineACHATES POWER·Filed 2006·Granted Jun 16, 2009·13 cites·22 claims
- 1788US4193098ASegmented video playback apparatus with ancillary recording mediumSPIN PHYSICS INC·Filed 1977·Granted Mar 11, 1980·41 cites·10 claims
- 1887US8087389B2Two-cycle, opposed-piston internal combustion engineLEMKE JAMES U·Filed 2009·Granted Jan 3, 2012·9 cites·21 claims
- 1986US6188535B1Arcuate scanning tape drive with a servo mechanism responsive to servo patterns in arcuate tracks on a moving tapeLEMKE JAMES U·Filed 1993·Granted Feb 13, 2001·57 cites·56 claims
- 2085US9810174B2Constructions for piston thermal managementACHATES POWER INC·Filed 2012·Granted Nov 7, 2017·7 cites·9 claims
- 2183US5526204ALow drag liquid bearing recording headCONNER PERIPHERALS INC·Filed 1995·Granted Jun 11, 1996·43 cites·18 claims
- 2283US5097368AInformation recording apparatus with a non-Newtonian liquid bearingCONNER PERIPHERALS INC·Filed 1989·Granted Mar 17, 1992·27 cites·19 claims
- 2381US4322763AMagnetic head having a controllable high-permeability tunnel within a low-permeability sleeveSPIN PHYSICS INC·Filed 1980·Granted Mar 30, 1982·22 cites·11 claims
- 2480US4287539ASegmented video recording with segment identification codesSPIN PHYSICS INC·Filed 1979·Granted Sep 1, 1981·24 cites·2 claims
- 2578US8550041B2Cylinder and piston assemblies for opposed piston enginesLEMKE JAMES U·Filed 2010·Granted Oct 8, 2013·4 cites·8 claims
- 2678US5193046AInformation recording apparatus with a liquid bearingCONNER PERIPHERALS NC·Filed 1990·Granted Mar 9, 1993·32 cites·24 claims
- 2778US3962725AMagnetic-tape cartridge-loaded portable video camera using prerecorded timing signals to control the video time baseEASTMAN KODAK CO·Filed 1974·Granted Jun 8, 1976·17 cites·12 claims
- 2876US5317463AInformation recording apparatus with a liquid bearingCONNER PERIPHERALS INC·Filed 1993·Granted May 31, 1994·24 cites·10 claims
- 2976US3931638AApparatus for modifying the time base of signalsEASTMAN TECHNOLOGY·Filed 1974·Granted Jan 6, 1976·17 cites·3 claims
- 3073US4524390AImaging apparatusEASTMAN KODAK CO·Filed 1983·Granted Jun 18, 1985·21 cites·16 claims
- 3172US5488521AInformation recording apparatus with a non-newtonian liquid bearingCONNER PERIPHERALS INC·Filed 1994·Granted Jan 30, 1996·19 cites·20 claims
- 3272US4477853AMultitrack magnetic headEASTMAN KODAK CO·Filed 1981·Granted Oct 16, 1984·15 cites·16 claims
- 3371US10935134B2Ported engine constructions with low-tension compression sealsACHATES POWER INC·Filed 2018·Granted Mar 2, 2021·0 cites·16 claims
- 3467US8485161B2Opposed piston, compression ignition engine with single-side mounted crankshafts and crossheadsLEMKE JAMES U·Filed 2009·Granted Jul 16, 2013·5 cites·11 claims
- 3566US5646806AEdge tensioning sloping tape guide for arcuately scanning tape driveMINNESOTA MINING & MFG·Filed 1996·Granted Jul 8, 1997·20 cites·63 claims
- 3664US8474435B2Opposed piston, compression ignition engine with single-side mounted crankshafts and crossheadsLEMKE JAMES U·Filed 2009·Granted Jul 2, 2013·4 cites·15 claims
- 3764US3932888AApparatus for modifying the time base of signalsEASTMAN TECHNOLOGY·Filed 1974·Granted Jan 13, 1976·10 cites·10 claims
- 3863US8281755B2Internal combustion engine with provision for lubricating pistonsLEMKE JAMES U·Filed 2008·Granted Oct 9, 2012·2 cites·16 claims
- 3962US4334247AApparatus useful for converting asynchronous video information to synchronous video informationSPIN PHYSICS INC·Filed 1980·Granted Jun 8, 1982·11 cites·15 claims
- 4060US10060345B2Dual crankshaft, opposed-piston engine constructionsEXNER CHRISTINA·Filed 2012·Granted Aug 28, 2018·2 cites·3 claims
- 4160US7931005B2Generating electricity with a hypocyloidally driven, opposed piston, internal combustion engineACHATES POWER INC·Filed 2009·Granted Apr 26, 2011·2 cites·16 claims
- 4260US4388656AMultitrack recording with minimal intermodulationEASTMAN KODAK CO·Filed 1980·Granted Jun 14, 1983·10 cites·31 claims
- 4359US4302790AMagnetic recording head with effective magnetic gap length less than about 15μ inchesEASTMAN KODAK CO·Filed 1979·Granted Nov 24, 1981·8 cites·12 claims
- 4455US7142169B1Apparatus and method for control of a precisely positionable high gain microwave antennaLEMKE JAMES U·Filed 2005·Granted Nov 28, 2006·2 cites·16 claims
- 4555US2014026864A1Cylinder and Piston Assemblies for Opposed Piston EnginesACHATES POWER INC·Filed 2013·Application pending·0 cites
- 4654US4459616AApparatus for producing customized prints of still frame television scenesEASTMAN KODAK CO·Filed 1981·Granted Jul 10, 1984·10 cites·10 claims
- 4753US10036471B2Ported engine constructions with low-tension compression sealsLEMKE JAMES U·Filed 2009·Granted Jul 31, 2018·1 cites·4 claims
- 4849US2015282715A1Passive, noninvasive tomographyLEMKE JAMES U·Filed 2015·Application pending·0 cites
- 4948US4106028AMethod and apparatus for forming magnetic images by piezoelectric coupling between an optical image and a magnetostrictive imaging componentEASTMAN TECHNOLOGY·Filed 1977·Granted Aug 8, 1978·5 cites·9 claims
- 5048US2013079629A1Passive, noninvasive tomographyLEMKE JAMES U·Filed 2011·Application pending·0 cites
Showing the top 50 of 65 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →