Patents by Inventor Eduard Karel De Jong

Eduard Karel De Jong 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: 6364208
    Abstract: There is described a card charging system comprising: (a) one or more smart card reading devices; (b) a transaction recording-payment facility; and (c) one or more security modules located between the one or more reading devices and the transaction recording-payment facility. The transaction facility is operable to receive signals from the one or more security modules to enable a purchase to be made in return for an amount of credit debited from a card; the one or more security modules record individual use of the card in respect of time and amount debited.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: April 2, 2002
    Assignee: Transmo Limited
    Inventors: John Stanford, Eduard Karel De Jong
  • Patent number: 6094656
    Abstract: Data exchange system includes at least one portable data processing unit with data communication processing and memory units, the latter including an executive program and one or more application descriptors, each application description including at least one interaction context comprising commands, data elements, data references, procedures, access conditions, and external references; the structure of the data elements and the data references as well as other references is chosen in such a way that a very efficient use of the restricted memory space of e.g. smart cards is obtained.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: July 25, 2000
    Assignee: Belle Gate Investment B.V.
    Inventor: Eduard Karel De Jong
  • Patent number: 6052690
    Abstract: Data exchange system includes at least one portable data processing unit (5) having data communication elements (14), processing device (15) and memory elements (16). The latter includes an executive program (17) and one or more application descriptions (18(1) . . . 18(n)). Each application description has at least one interaction context (19(1) . . . ) comprising commands, data elements, data references, procedures, access conditions, and external references. The structure of the data elements and the data references, as well as other references, is chosen in such a way that a very efficient use of the restricted memory space of, for example, smart cards is obtained.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: April 18, 2000
    Assignee: Belle Gate Investment B.V.
    Inventor: Eduard Karel de Jong
  • Patent number: 5930363
    Abstract: A security device for use in a card charging system where a service or product providing facility issues services or products by the use of credit from a card. The security device comprises signal transmission means for delivering signals to a purchasing facility to enable a user to acquire a service or product dependent on the credit debited from a card, a record keeping subsystem to certify the credit debited from the card and to identify which account is to receive the debited credit and signal processing and output means for generating signals indicating a successful transaction. The signals may be encoded by use of encryption techniques. A separable security subsystem is provided to ensure a record of transactions is available if power fails on the main security device.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: July 27, 1999
    Assignee: Transmo Limited
    Inventors: Christopher John Stanford, Eduard Karel De Jong
  • Patent number: 5802519
    Abstract: Data exchange system includes at least one portable data processing unit (5) having data communication elements (14), processing device (15) and memory elements (16). The latter includes an executive program (17) and one or more application descriptions (18(1) . . . 18(n)). Each application description has at least one interaction context (19(1) . . . ) comprising commands, data elements, data references, procedures, access conditions, and external references. The structure of the data elements and the data references, as well as other references, is chosen in such a way that a very efficient use of the restricted memory space of, for example, smart cards is obtained.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: September 1, 1998
    Assignee: Belle Gate Investment B.V.
    Inventor: Eduard Karel De Jong