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Sang-Hoan Chang

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  • Ichon, KR
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    STERILIZATION MODULE, WATER PURIFICATION DEVICE, AND SYSTEM COMPRIS...
    • Publication number 20240025771
    • Publication date Jan 25, 2024
    • Seoul Viosys Co., Ltd.
    • Woong Ki JUNG
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    WEARABLE DEVICE FOR PAIN TREATMENT BY COMPOUND PHOTO-CHEMICAL ACTIO...
    • Publication number 20220233877
    • Publication date Jul 28, 2022
    • Wellscare Co., Ltd
    • Sang-Hyun Chang
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    STERILIZATION MODULE, WATER PURIFICATION DEVICE, AND SYSTEM COMPRIS...
    • Publication number 20220135441
    • Publication date May 5, 2022
    • Seoul Viosys Co., Ltd.
    • Woong Ki JUNG
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Application

    STERILIZATION MODULE, WATER PURIFICATION DEVICE, AND SYSTEM COMPRIS...
    • Publication number 20200172413
    • Publication date Jun 4, 2020
    • Seoul Viosys Co., Ltd.
    • Woong Ki JUNG
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    ADHESIVE-TYPE INSECT TRAP
    • Publication number 20200146273
    • Publication date May 14, 2020
    • Seoul Viosys Co., Ltd.
    • Sang Hyun CHANG
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    ADHESIVE-TYPE INSECT TRAP
    • Publication number 20190357516
    • Publication date Nov 28, 2019
    • Seoul Viosys Co., Ltd.
    • Sang Hyun CHANG
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    ADHESIVE-TYPE INSECT TRAP
    • Publication number 20190350184
    • Publication date Nov 21, 2019
    • Seoul Viosys Co., Ltd.
    • Sang Hyun CHANG
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    INSECT TRAP
    • Publication number 20190133106
    • Publication date May 9, 2019
    • Seoul Viosys Co., Ltd.
    • Hoon Sik EOM
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    INSECT TRAP
    • Publication number 20190090470
    • Publication date Mar 28, 2019
    • Seoul Viosys Co., Ltd.
    • Gwang Ryong LEE
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    SLIM INSECT TRAP USING UV LED
    • Publication number 20180368383
    • Publication date Dec 27, 2018
    • Seoul Viosys Co., Ltd.
    • Mi So Ko
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    INSECT TRAP USING UV LEDS
    • Publication number 20180271080
    • Publication date Sep 27, 2018
    • Seoul Viosys Co., Ltd.
    • Jong Rack Kim
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    STERILIZATION MODULE, WATER PURIFICATION DEVICE, AND SYSTEM COMPRIS...
    • Publication number 20180215634
    • Publication date Aug 2, 2018
    • Seoul Viosys Co., Ltd.
    • Woong Ki Jung
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    INSECT TRAP
    • Publication number 20180213763
    • Publication date Aug 2, 2018
    • Seoul Viosys Co., Ltd.
    • Chung Hoon Lee
    • F21 - LIGHTING
  • Information Patent Application

    Multi-level flash EEPROM cell and method of manufacture thereof
    • Publication number 20040071020
    • Publication date Apr 15, 2004
    • HYUNDAI ELECTRONICS INDUSTRIES CO., LTD. a corporation of Republic of Korea
    • Sang-Hoan Chang
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Multi-level flash EEPROM cell and method of manufacture thereof
    • Publication number 20010026480
    • Publication date Oct 4, 2001
    • Sang-Hoan Chang
    • G11 - INFORMATION STORAGE