Won Jong Chan patents

• Polyamic acid aqueous solution composition, and method for preparing polyimide powder

  US-2024400760-A1 · Dec 5, 2024 · US

• Polyamic acid aqueous solution composition

  US-2024352193-A1 · Oct 24, 2024 · US

• Electronic device and operation method therefor

  US-11551683-B2 · Jan 10, 2023 · US

• Electronic device for providing voice-based service using external device, external device and operation method thereof

  US-11392346-B2 · Jul 19, 2022 · US

• Electronic device and method for controlling voice signal

  US-2020342869-A1 · Oct 29, 2020 · US

• Electronic device and operation method therefor

  US-2020265838-A1 · Aug 20, 2020 · US

• Electronic device for providing voice-based service using external device, external device and operation method thereof

  US-2020257496-A1 · Aug 13, 2020 · US

• Composition for insulator of thin film transistor, insulator and organic thin film transistor prepared thereby

  US-10158078-B2 · Dec 18, 2018 · US

• Composition for Insulator of Thin Film Transistor, Insulator and Organic Thin Film Transistor Prepared Thereby

  US-2017331042-A1 · Nov 16, 2017 · US

• Method for preparing polymer-nanoparticles having core-shell structure by uniformly coating polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and polymer-nanoparticle composite comprising same

  US-9691520-B2 · Jun 27, 2017 · US

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