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Foldable scooter frame
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Patent number 9,301,893
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Issue date Apr 5, 2016
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Energy Control Limited
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Donald P. H. Wu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Battery assembly structure
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Patent number 8,753,764
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Issue date Jun 17, 2014
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Energy Control Limited
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Donald P. H. Wu
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H01 - BASIC ELECTRIC ELEMENTS
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Electric foldable wheelchair
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Patent number 7,699,131
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Issue date Apr 20, 2010
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Pihsiang Machinery Manufacturing Co., Ltd.
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Donald P. H. Wu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Battery assembly
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Patent number 7,670,718
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Issue date Mar 2, 2010
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Energy Control Limited
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Donald P. H. Wu
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Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Folding electric scooter
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Patent number 7,654,356
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Issue date Feb 2, 2010
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Pihsiang Machinery Manufacturing Co., Ltd.
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Donald P. H. Wu
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B60 - VEHICLES IN GENERAL
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Streamline hub
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Patent number D528492
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Issue date Sep 19, 2006
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Donald P. H. Wu
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D12 - Transportation
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Electric bicycle
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Patent number D510715
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Issue date Oct 18, 2005
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PI Hsiang Machinery Mfg. Co.
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Donald P. H. Wu
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D12 - Transportation
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Electric scooter
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Patent number D508093
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Issue date Aug 2, 2005
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PI Hsing Machinery Mfg. Co.
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Donald P. H. Wu
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D21 - Games, toys, and sports goods
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