Patents by Inventor Zhangwu Zhu

Zhangwu Zhu 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).

  • Microwave spectrometer
    Patent number: 7057398
    Abstract: An improved microwave spectrometer for measuring the concentration of ethylene oxide gas and the concentration of water vapor in one or more gas samples taken from an ethylene oxide sterilization chamber.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: June 6, 2006
    Inventors: Zhangwu Zhu, Warren P. Dickinson
  • Method for sterilization using ethylene oxide
    Publication number: 20050089442
    Abstract: A method for sterilizing industrial products using a ethylene oxide in conjunction with one or more of the following techniques is disclosed: steam pulses; steam conditioning; deep vacuum pulses with nitrogen; and, positive pressure pulses of inert gases. The entire sterilization process, which consists of conditioning, sterilizing, and degassing the product, is performed in a singled chamber. The product is releasable from an ethylene oxide residual standpoint at the completion of the process. The entire process takes 10 to 20 hours.
    Type: Application
    Filed: October 28, 2003
    Publication date: April 28, 2005
    Inventors: William Young, Zhangwu Zhu
  • Microwave spectrometer
    Publication number: 20040155664
    Abstract: An improved microwave spectrometer for measuring the concentration of ethylene oxide gas and the concentration of water vapor in one or more gas samples taken from an ethylene oxide sterilization chamber.
    Type: Application
    Filed: February 11, 2003
    Publication date: August 12, 2004
    Inventors: Zhangwu Zhu, Warren P. Dickinson