Patents by Inventor Carl H. Meyer

Carl H. Meyer 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).

  • Patent number: 5205938
    Abstract: A bag filter comprising at least one sheet of a polyester filter medium, preferably a polyester high dirt capacity filter medium, having a graded pore structure which has been formed into a bag configuration with an opening, an inside surface, an outside surface, and at least one seam formed at adjoining filter medium portions which have been sewn together and optionally sealed with a thermoplastic tape that has been heat-sealed to the adjoining filter medium portions.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: April 27, 1993
    Assignee: Pall Corporation
    Inventors: Frank A. Fiumano, Colin F. Harwood, Carl H. Meyers
  • Patent number: 4755940
    Abstract: An electronic funds transfer system (EFT) is described in which retail terminals located in stores are connected through a public switched telecommunication system to card issuing agencies data processing centers. Users of the system are issued with intelligent secure bank cards, which include a microprocessor, ROS and RAM stores. The POS includes a personal key (KP) and an account number (PAN) stored on the card when the issuer issues it to the user. Users also have a personal identity number (PIN) which is stored or remembered separately.A transaction is initiated at a retail terminal when a card is inserted in an EFT module connected to the terminal. A request message including the PAN and a session key (KS) is transmitted to the issuers data processing center. The issuer generates an authentication parameter (TAP) based upon its stored version of KP and PIN and a time variant parameter received from the terminal.
    Type: Grant
    Filed: January 6, 1987
    Date of Patent: July 5, 1988
    Assignee: International Business Machines Corporation
    Inventors: Bruno Brachtl, Christopher J. Holloway, Richard E. Lennon, Stephen M. Matyas, Carl H. Meyer, Jonathan Oseas
  • Patent number: 4747050
    Abstract: An electronic funds transfer system (EFT) is described in which retail terminals located in stores are connected through a public switched telecommunication system to card issuing agencies data processing centers. Users of the system are issued with intelligent secure bank cards, which include a microprocessor, ROS and RAM stores. The ROS includes a personal key (KP) and an account number (PAN) stored on the card when the issuer issues it to the user. Users also have a personal identity numbe (PIN) which is stored or remembered separately.A transaction is initiated at a retail terminal when a card is inserted in an EPT module connected to the terminal. A request message including the PAN and a session key (KS) is transmitted to the issuers data processing center. The issuer generates an authentication parameter (TAP) based upon its stored version of KP and PIN and a time variant parameter received from the terminal.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: May 24, 1988
    Assignee: International Business Machines Corporation
    Inventors: Bruno Brachtl, Christopher J. Holloway, Richard E. Lennon, Stephen M. Matyas, Carl H. Meyer, Jonathan Oseas
  • Patent number: 4393269
    Abstract: A method and apparatus for verifying both the content of a transaction and the identity of the parties thereto. The system includes a plurality of terminals connected together over a common communication channel wherein a given pair of users located at different terminals on the system have exchanged a contract comprising a plurality of reference signatures each of which constitutes the final member of a one-way keyed signature sequence and each of which is a one-way function of each user's secret encryption key (K.sub.x) and a number (NUM) known to both parties. Each terminal connected to the system includes means for generating a multidigit ranking vector which is a cryptographic function of the entire message (DATA) tobe transmitted.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: July 12, 1983
    Assignee: International Business Machines Corporation
    Inventors: Alan G. Konheim, Stephen M. Matyas, Carl H. Meyer