Assignee
CHANG SEONGSIK
US·8 granted patents·40 citations·filing 2009–2019
Top patents by PatentIndex Score
8 records- 0195US10262836B2Energy-efficient plasma processes of generating free charges, ozone, and lightCHANG SEONGSIK·Filed 2018·Granted Apr 16, 2019·8 cites·14 claims
- 0294US8492722B2Volatile organic compound sensorCHANG SEONGSIK·Filed 2011·Granted Jul 23, 2013·21 cites·15 claims
- 0392US9625374B2Image forming apparatus having optical sensor system, optical sensor system having shields, and method thereofCHANG SEONGSIK·Filed 2011·Granted Apr 18, 2017·11 cites·20 claims
- 0460US10784084B2Energy-efficient plasma processes of generating free charges, ozone, and lightCHANG SEONGSIK·Filed 2019·Granted Sep 22, 2020·0 cites·12 claims
- 0552US9020401B2Apparatus, printers, and charge roller assembliesCHANG SEONGSIK·Filed 2011·Granted Apr 28, 2015·0 cites·18 claims
- 0649US10910211B2Electrical potential energy to electrical kinetic energy converter, ozone generator, and light emitterCHANG SEONGSIK·Filed 2019·Granted Feb 2, 2021·0 cites·17 claims
- 0744US10353316B2Printing with metal-surface charge element in glow discharge regimeCHANG SEONGSIK·Filed 2012·Granted Jul 16, 2019·0 cites·21 claims
- 0843US8326173B2Hard imaging devices, humidity control systems and hard imaging methodsCHANG SEONGSIK·Filed 2009·Granted Dec 4, 2012·0 cites·15 claims
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