Patents by Inventor Michael Ubell

Michael Ubell 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).

  • Selectively switching memory access permission for manipulating data in a database
    Patent number: 5895467
    Abstract: Routines for manipulating data in a database are performed by a database server by determining whether or not a database manipulation routine is to be isolated from a specified range of memory, and, in response, selectively switching memory access permission to the specified range of memory (e.g., from read/write to read-only) for the database manipulation routine under consideration. The database manipulation routine is then executed using the selectively switched memory access permission. A database manipulation routine that is to be isolated can be executed with read-only memory access thereby protecting the specified range of memory (e.g., corresponding to core data structures) from improper modification.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: April 20, 1999
    Assignee: Informix Software, Inc.
    Inventors: Michael Ubell, Keith Kelleman