Patents by Inventor Duanqiao Zhang

Duanqiao Zhang 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).

  • Tankless Solar Water Heater
    Publication number: 20120000458
    Abstract: A fluid storage unit suitable for a tankless solar heater system. The storage unit has an elongated cylindrical hollow vessel having a sealing ring fit within an open end of the vessel abuting a ridge formed on the vessel and a cover attached to the open end of the vessel and abutting the ring to compress it against the ridge to form a fluid tight seal between the cover and the vessel.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 5, 2012
    Inventors: Duanqiao Zhang, Demin Zhang, Bin Chen, Yizhi Song, Guoqiang Xu, Decheng Li, Jin Li