Patents by Inventor Steven Shih-Yi Chang

Steven Shih-Yi Chang 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).

  • Ultraviolet-and-ozone disinfection apparatus having improvement on disinfection effect
    Patent number: 6932903
    Abstract: An ultraviolet-and-ozone disinfection apparatus 200 providing an improvement on disinfection, includes a disinfection tank 202, a mercury UV lamp 210 enclosed by a quartz tube 208 for generating UV light with air trapped between them undergoing UV irradiation to generate ozone, an ozone transmitting tube 216, a spiral water transmitting tube 215 wrapping around the quartz tube in a spiral manner to achieve sufficient disinfection by mixing ozone in water, a sleeve barrel enclosing the spiral tube. Along the entire flow path, water is exposed to UV radiation to achieve sufficient disinfection and reduce excessive ozone that is harmful to human health.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: August 23, 2005
    Assignee: Senno Technology Inc.
    Inventor: Steven Shih-Yi Chang
  • Ultraviolet-and-ozone disinfection apparatus having improvement on disinfection effect
    Publication number: 20040140269
    Abstract: An ultraviolet-and-ozone disinfection apparatus 200 providing an improvement on disinfection, includes a disinfection tank 202, a mercury UV lamp 210 enclosed by a quartz tube 208 for generating UV light with air trapped between them undergoing UV irradiation to generate ozone, an ozone transmitting tube 216, a spiral water transmitting tube 215 wrapping around the quartz tube in a spiral manner to achieve sufficient disinfection by mixing ozone in water, a sleeve barrel enclosing the spiral tube. Along the entire flow path, water is exposed to UV radiation to achieve sufficient disinfection and reduce excessive ozone that is harmful to human health.
    Type: Application
    Filed: June 11, 2003
    Publication date: July 22, 2004
    Inventor: Steven Shih-Yi Chang
  • Electronic tire gauge
    Patent number: D491480
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: June 15, 2004
    Assignee: Senno Technology Inc.
    Inventors: Tsung-Sheng Huang, Chen-I Chu, Steven Shih-Yi Chang