Patents by Inventor Li Changyong
Li Changyong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11696970Abstract: Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.Type: GrantFiled: November 24, 2022Date of Patent: July 11, 2023Assignee: Wangs Alliance CorporationInventors: Shelley S. Wald, Voravit Puvanakijjakorn, Rong Feng Yu, David Xin Wang, Li Changyong, Zhou Tingting
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Publication number: 20230097325Abstract: Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.Type: ApplicationFiled: November 24, 2022Publication date: March 30, 2023Inventors: Shelley S. Wald, Voravit Puvanakijjakorn, Rong Feng Yu, David Xin Wang, Li Changyong, Zhou Tingting
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Patent number: 11612670Abstract: Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.Type: GrantFiled: February 17, 2022Date of Patent: March 28, 2023Assignee: Wangs Alliance CorporationInventors: Shelley S. Wald, Voravit Puvanakijjakorn, Rong Feng Yu, David Xin Wang, Li Changyong, Zhou Tingting
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Publication number: 20220409762Abstract: Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.Type: ApplicationFiled: February 17, 2022Publication date: December 29, 2022Inventors: Shelley S. Wald, Voravit Puvanakijjakorn, Rong Feng Yu, David Xin Wang, Li Changyong, Zhou Tingting
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Patent number: 11433154Abstract: Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.Type: GrantFiled: May 13, 2021Date of Patent: September 6, 2022Assignee: Wangs Alliance CorporationInventors: Shelley S. Wald, Voravit Puvanakijjakorn, Rong Feng Yu, David Xin Wang, Li Changyong, Zhou Tingting
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Patent number: 11400177Abstract: Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.Type: GrantFiled: December 6, 2021Date of Patent: August 2, 2022Assignee: Wangs Alliance CorporationInventors: Shelley S. Wald, Voravit Puvanakijjakorn, Rong Feng Yu, David Xin Wang, Li Changyong, Zhou Tingting
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Publication number: 20220088252Abstract: Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.Type: ApplicationFiled: December 6, 2021Publication date: March 24, 2022Inventors: Shelley S. Wald, Voravit Puvanakijjakorn, Rong Feng Yu, David Xin Wang, Li Changyong, Zhou Tingting
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Publication number: 20210353813Abstract: Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.Type: ApplicationFiled: May 13, 2021Publication date: November 18, 2021Inventors: Shelley S. Wald, Voravit Puvanakijjakorn, Rong Feng Yu, David Xin Wang, Li Changyong, Zhou Tingting