Inventor · disambiguated record
Joseph A. Simpkins
Also filed as: SIMPKINS JOSEPH · SIMPKINS JOSEPH A · SIMPKINS JOSEPH D
12 granted patents·3 pending applications·183 citations·filing 1995–2024
91Inventor score
Top patents by PatentIndex Score
15 records- 0190US11914542B2Method and system to generate an event when a serial interface is disconnectedCANTALOUPE INC·Filed 2023·Granted Feb 27, 2024·2 cites·22 claims
- 0289US8373558B2Devices and methods for providing cashless payment and diagnostics for vending machinesUSA TECH INC·Filed 2009·Granted Feb 12, 2013·31 cites·19 claims
- 0384US6896116B2Bill acceptorMARS INC·Filed 2002·Granted May 24, 2005·42 cites·85 claims
- 0482US9852423B2Systems and methods for wireless authorization of transactions with mobile payment devicesUSA TECH INC·Filed 2014·Granted Dec 26, 2017·9 cites·8 claims
- 0580US9159182B2Vending approval systems, methods, and apparatus using card readersUSA TECH INC·Filed 2013·Granted Oct 13, 2015·3 cites·20 claims
- 0674US12242410B2Method and system to generate an event when a serial interface is disconnectedCANTALOUPE INC·Filed 2024·Granted Mar 4, 2025·0 cites·31 claims
- 0767US5889883AMethod and apparatus for optical sensor system and optical interface circuitMARS INC·Filed 1995·Granted Mar 30, 1999·31 cites·12 claims
- 0856US5616915AOptical sensor for monitoring the status of a bill magazine in a bill validatorMARS INC·Filed 1995·Granted Apr 1, 1997·50 cites·39 claims
- 0956US2010094456A1Devices and methods for providing cashless payment and diagnostics for vending machinesUSA TECH INC·Filed 2008·Application pending·0 cites
- 1042USD727428SVending interface controllerUSA TECH INC·Filed 2014·Granted Apr 21, 2015·4 cites·1 claims
- 1141US2015287016A1Systems and methods for sending information to mobile devices utilizing mobile device identifiersUSA TECH INC·Filed 2015·Application pending·0 cites
- 1240US6819781B1Method and apparatus for optical sensor system and optical interface circuitMARS INC·Filed 1998·Granted Nov 16, 2004·7 cites·36 claims
- 1336US9619795B2Apparatus, system, and methods for retrofitting vending systems with wireless communicationUSA TECH INC·Filed 2015·Granted Apr 11, 2017·0 cites·29 claims
- 1434US2003033345A1Thread-based methods and systems for using the idle processing power of one or more networked computers to solve complex scientific problemsFiled 2000·Application pending·0 cites
- 1532US5600545AApparatus and method for a switching power supply with a power steering clampMARS INC·Filed 1995·Granted Feb 4, 1997·4 cites·21 claims
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