Inventor · disambiguated record
Joel E. Sandahl
Also filed as: SANDAHL JOEL · SANDAHL JOEL E · SANDAHL JOEL ERNEST
13 granted patents·1 pending application·427 citations·filing 1975–2021
93Inventor score
Files withENHANCED MESSAGING SYSTEMS INC3LITHIUM WERKS TECH BV2TROXEL RUSSELL M2COMEX SYSTEMS INC1MOTOROLA INC1
Top patents by PatentIndex Score
14 records- 0192US10230246B2Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methodsLITHIUM WERKS TECH BV·Filed 2015·Granted Mar 12, 2019·11 cites·33 claims
- 0291US11289918B2Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methodsLITHIUM WERKS TECH BV·Filed 2019·Granted Mar 29, 2022·7 cites·18 claims
- 0389US8823323B2Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methodsTROXEL RUSSELL M·Filed 2010·Granted Sep 2, 2014·19 cites·53 claims
- 0488US4525685ADisciplined oscillator system with frequency control and accumulated time controlSPECTRACOM CORP·Filed 1983·Granted Jun 25, 1985·82 cites·39 claims
- 0587US8884585B2Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methodsTROXEL RUSSELL M·Filed 2010·Granted Nov 11, 2014·14 cites·50 claims
- 0686US6098098ASystem for managing the configuration of multiple computer devicesENHANCED MESSAGING SYSTEMS INC·Filed 1997·Granted Aug 1, 2000·218 cites·63 claims
- 0784US9537326B2Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methodsTROXEL RUSSELL·Filed 2010·Granted Jan 3, 2017·12 cites·61 claims
- 0880US4055730ACircuit for detecting dial pulsesCOMEX SYSTEMS INC·Filed 1975·Granted Oct 25, 1977·20 cites·25 claims
- 0954US5031230AFrequency, phase and modulation control system which is especially useful in simulcast transmission systemsSIMULCOMM PARTNERSHIP·Filed 1988·Granted Jul 9, 1991·17 cites·36 claims
- 1047US12463236B2Electrochemical device having spiral wound electrodesROLLED RIBBON BATTERY COMPANY LLC·Filed 2021·Granted Nov 4, 2025·0 cites·34 claims
- 1144US6965297B1Wide area radio paging systemENHANCED MESSAGING SYSTEMS INC·Filed 1999·Granted Nov 15, 2005·14 cites·71 claims
- 1237US2002049049A1System for delivering wireless information services to messaging devicesFiled 2001·Application pending·0 cites
- 1336US5689808AMultiple channel automatic simulcast control systemMOTOROLA INC·Filed 1994·Granted Nov 18, 1997·10 cites·26 claims
- 1430US6097944ASystem for linking transmissions from multiple sites over a wide areaENHANCED MESSAGING SYSTEMS INC·Filed 1998·Granted Aug 1, 2000·3 cites·42 claims
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