Patents by Inventor Christian Pho Duc

Christian Pho Duc 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).

  • Method for paying for a service offered by means of a data network
    Patent number: 8595131
    Abstract: A method is proposed for acquiring a service sold over a data network (20) against presentation of a transaction medium (2). The service is ordered by a user (1) by a user end system (10) from a service provider (40). The latter calls in a clearing center (30) which enters into a data exchange with the transaction medium (2) to call for therefrom a necessary contribution in the form of certain data assumed for acquisition of the service. The ordering process and the data exchange with the transaction medium (2) for calling for the contribution are linked via an identifier (KM) associated with the transaction medium (2), the identifier being determined by the user end system (10) and used to secure the ordering process and the call for the contribution.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: November 26, 2013
    Assignee: Giesecke & Devrient GmbH
    Inventors: Tai Duc Vu, Christian Pho Duc, Tschangiz Scheybani
  • MEMORY DEVICE WITH DIFFERENT TYPES OF PHASE CHANGE MEMORY
    Publication number: 20090268513
    Abstract: A memory includes a first memory device including an array of phase changing memory cells. The first memory device is of a first memory type. The integrated circuit includes a second memory device including an array of phase changing memory cells. The second memory device is of a second memory type that is different than the first memory type. The first and second memory devices are packaged together into a single memory device.
    Type: Application
    Filed: April 29, 2008
    Publication date: October 29, 2009
    Inventors: Luca De Ambroggi, Jan Boris Philipp, Peter Schroegmeier, Gernot Steinlesberger, Christian Pho Duc, Franz Kreupl
  • ERROR CORRECTION IN AN INTEGRATED CIRCUIT WITH AN ARRAY OF MEMORY CELLS
    Publication number: 20090199043
    Abstract: An integrated circuit includes an array of memory cells, and an error correction code circuit configured to correct errors in data read from the array based at least in part on a map that identifies locations of erratic memory cells in the array.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Inventors: Peter Schrogmeier, Jan Boris Philipp, Thomas Happ, Luca DeAmbroggi, Christian Pho Duc, Franz Kreupl, Gernot Steinlesberger
  • INTEGRATED CIRCUIT INCLUDING MEMORY HAVING LIMITED READ
    Publication number: 20090046499
    Abstract: An integrated circuit including a memory with an array of memory cells, each memory cell comprising a non-volatile memory element; and a limited read circuit communicatively coupled to the array of memory cells.
    Type: Application
    Filed: February 5, 2008
    Publication date: February 19, 2009
    Applicant: QIMONDA AG
    Inventors: Jan Boris Philipp, Luca De Ambroggi, Peter Schroegmeier, Gernot Steinlesberger, Christian Pho Duc, Franz Kreupl, Thomas Happ
  • Method for paying for a service offered by means of a data network
    Publication number: 20040243474
    Abstract: A method is proposed for acquiring a service sold over a data network (20) against presentation of a transaction medium (2). The service is ordered by a user (1) by a user end system (10) from a service provider (40). The latter calls in a clearing center (30) which enters into a data exchange with the transaction medium (2) to call for therefrom a necessary contribution in the form of certain data assumed for acquisition of the service. The ordering process and the data exchange with the transaction medium (2) for calling for the contribution are linked via an identifier (KM) associated with the transaction medium (2), the identifier being determined by the user end system (10) and used to secure the ordering process and the call for the contribution.
    Type: Application
    Filed: July 9, 2004
    Publication date: December 2, 2004
    Inventors: Tai Duc Vu, Christian Pho Duc, Tschangiz Scheybani