Patents by Inventor David Zientara

David Zientara 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).

  • System for security access control in multiple regions
    Patent number: 6233588
    Abstract: A system for controlling access in multiple regions is provided in which each region comprises one or more sites having building areas to which access is controlled. The system includes multiple regional databases, where each regional database is associated with one of the regions, and a master database storing system information, cardholder information and access control information. A master computer system is coupled to the master database, and a regional computer system, capable of data communication to the master computer system, is coupled to each of the regional databases. Initially, the master computer system downloads the system information and cardholder information from the master database to each of the regional databases, and each regional computer system uploads the access control information from its regional database to the master database to provide the stored access control information for the region at the master database.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: May 15, 2001
    Assignee: Lenel Systems International, Inc.
    Inventors: John Marchoili, John Neilsen, Michael Regelski, Rudy Prokupets, David Zientara, Robert Rozwod