Patents by Inventor Kenneth Blomkvist

Kenneth Blomkvist 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).

  • Data type preserving encryption
    Patent number: 7418098
    Abstract: A method and a system for encryption of a data element in a relational database, wherein each data element includes a string of at least one character. The method includes the steps of: reading the type of a data element which is to be encrypted; interpreting the data type to form a restricting character set for each character of the data element; and encrypting each character of the data element into an encrypted character selected from the restricting character set.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: August 26, 2008
    Assignee: Protegrity Corporation
    Inventors: Ulf Mattsson, Kenneth Blomkvist