Patents by Inventor Cai-Xia Wan

Cai-Xia Wan 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).

  • Scanner and method for encrypting/decrypting documents by using the scanner
    Publication number: 20050036654
    Abstract: A method for encrypting/decrypting documents. The method includes the steps of: scanning a predetermined pattern; storing the predetermined pattern; scanning the documents; encrypting/decrypting the documents in accordance with the predetermined pattern.
    Type: Application
    Filed: August 12, 2004
    Publication date: February 17, 2005
    Inventor: Cai-Xia Wan