1
Juergen Dethloff, Christian Hinneberg: Multi-user card system. Juergen Dethloff, Notaro & Michalos, June 6, 1989: US04837422 (483 worldwide citation)

A card combination which is issued to a single cardholder can be reprogrammed by the cardholder for use by a sub-user to a desired extent with regard to value and time. The cardholder uses a master enabling code to access the programming mechanism. He/she assigns a sub-PIN for use by the sub-user an ...


2
Juergen Dethloff, Christian Hinneberg: Smart card issuing and receiving apparatus. Juergen Dethloff, Notaro & Michalos, November 6, 1990: US04968873 (341 worldwide citation)

An apparatus for issuing a transaction card comprises a value receiving mechanism in the form of a card reader or a bank note acceptor or both. The apparatus includes a memory for storing the exchange rate for a plurality of currencies as compared to a local visitor's voucher which can be issued by ...


3
Juergen Dethloff: Method system and portable data medium for paying for purchases. Notaro & Michalos P C, April 11, 2000: US06047888 (131 worldwide citation)

A data medium in the form of a check card is known. Such check cards include a memory in which at least one amount of money is stored. If the user wishes to purchase or use a product or service, the amount of money is debited by the vendor. If the vendor intents to defraud the user, or simply makes ...


4
Juergen Dethloff, Christian Hinneberg: Apparatus and method to control economical systems. Juergen Dethloff, Notaro & Michalos, May 23, 1989: US04833607 (83 worldwide citation)

The incentive and feedback apparatus includes a plurality of business stations, each having an incentive module and a transaction mechanism for conducting different types of transactions involving different types of products. The incentive module stores a plurality of indices that encode a business ...


5
Juergen Dethloff: Method and system for paying with a portable data medium having security against over charging and unauthorized use. Notaro & Michalos P C, September 22, 1998: US05811771 (25 worldwide citation)

A data medium in the form of a check card is known. Such check cards include a memory in which at least one amount of money is stored. If the user wishes to purchase or use a product or service, the amount of money is debited by the vendor. If the vendor intents to defraud the user, or simply makes ...


6
Juergen Dethloff: Method and system for securing and restoring data of a portable chip-card if lost or stolen. Notaro & Michalos P C, May 11, 1999: US05902981 (5 worldwide citation)

Portable data medium with integrated memories is used for various purposes, for example for storing personal medical data or for storing amounts of money. The danger exists that if the data medium is lost or stolen, data or, respectively, amounts of money, are irretrievably lost to the legitimate us ...


7
Juergen Dethloff: Method and system for securing and restoring data of a portable chip-card if lost or stolen. Notaro & Michalos P C, December 14, 1999: US06000606 (4 worldwide citation)

Portable data medium with integrated memories is used for various purposes, for example for storing personal medical data or for storing amounts of money. The danger exists that if the data medium is lost or stolen, data or, respectively, amounts of money, are irretrievably lost to the legitimate us ...


8
Juergen Dethloff: System with portable terminal and data media connectable therewith. Notaro & Michalos P C, April 11, 2000: US06049788

Portable data media are known of which many have the uniform format of a standardized credit card and which are used in different ways for monetary transactions, preferably for the cash-less payment of services. Small portable terminals are also known which can be used together with such data media ...


9
Juergen Dethloff: Incentive and feedback apparatus and method. Juergen Dethloff, CHEN JINGJUN, March 22, 1989: CN88102493

The incentive and feedback apparatus includes a plurality of business stations, each having an incentive module and a transaction mechanism for conducting different types of transactions involving different types of products. The incentive module stores a plurality of indices that encode a business ...