Patents by Inventor Norman Keller

Norman Keller 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).

  • Anonymous matching system
    Patent number: 5136501
    Abstract: A matching system for trading instruments in which bids are automatically matched against offers for given trading instruments for automatically providing matching transactions in order to complete trades for the given trading instruments, includes a host computer means (20) comprising means for anonymously matching active bids and offers in the system by trading instrument based on a variable matching criteria, which comprises counterparty credit limit between counterparties (24a, 26b) to a potential matching transaction.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: August 4, 1992
    Assignee: Reuters Limited
    Inventors: David L. Silverman, Norman Keller
  • Distributed matching system
    Patent number: 5077665
    Abstract: A matching system for trading instruments is provided in which bids are automatically matched against offers for given trading instruments for automatically providing matching transactions in order to complete trades for the given trading instruments in which controllable subsets (110, 112) of a distributable system trading book (118) may be selectively provided to trading keystations (24) in the matching system from the host computer (20) or central system for dynamically controllably masking the available trading market.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: December 31, 1991
    Assignee: Reuters Limited
    Inventors: David L. Silverman, Alfred H. Scholldorf, Norman Keller