Patents by Inventor Ya J. Zhou

Ya J. Zhou 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).

  • Analyzing for alkyl ketene dimers
    Patent number: 5538899
    Abstract: A method of analysing a sample for alkyl ketene dimer (AKD) comprises treating the sample (or extract thereof) with a reagent which will react with an AKD to produce a detectable derivative. The preferred reagent is 4-(N,N'-dimethylamino)pyridine.
    Type: Grant
    Filed: August 2, 1994
    Date of Patent: July 23, 1996
    Assignee: The University of Manchester Institute of Science and Technology
    Inventors: John C. Roberts, Ya J. Zhou