Nikolaos Papandreou  Nikolaos Papandreou photo       

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Research Staff Member
IBM Research - Zurich, Switzerland
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Professional Associations

Professional Associations:  IEEE Member


2017

Conditioning phase change memory cells
N. Papandreou, H. Pozidis
US Patent 9,558,817

Data encoding in solid-state storage devices
T. Mittelholzer, N. Papandreou, T. Parnell, H. Pozidis
US 9,734,012

Data packing for compression-enabled storage systems
C. Camp, T. Fisher, T. Mittelholzer, N. Papandreou, T. Parnell, H. Pozidis
US Patent 9,712,190

Device and method for storing data in a plurality of multi-level cell memory chips
T. Blaettler, T. Mittelholzer, N. Papandreou, T. Parnell, H. Pozidis, M. Stanisavljevic
US Patent 9,672,921

Memory architecture for storing data in a plurality of memory chips
T. Antonakopoulos, N. Papandreou, H. Pozidis
US Patent 9,672,910

Determining a cell state of a resistive memory cell
N. Papandreou, H. Pozidis, M. Stanisavljevic
US Patent 9,666,273

Diagonal anti-diagonal memory structure
T. Blaettler, C. Camp, T. Mittelholzer, N. Papandreou, T. Parnell, H. Pozidis
US Patent 9,647,694

Device for selecting a level for at least one read voltage
C. Camp, E. Eleftheriou, T. Mittelholzer, T. Parnell, N. Papandreou, H. Pozidis, A. Walls
US Patent 9,639,462

Adapting erase cycle parameters to promote endurance of a memory
T. Mittelholzer, N. Papandreou, T. Parnell, H. Pozidis, G. Tressler
US Patent 9,588,702

Estimation of level-thresholds for memory cells
T. Mittelholzer, N. Papandreou, T. Parnell, H. Pozidis, M. Stanisavljevic
US Patent 9,583,184


Extending useful life of a non-volatile memory by health grading
C. Camp, I. Koltsidas, N. Papandreou, T. Parnell, R. Pletka, H. Pozidis, G. Tressler, A. Walls
US Patent 9,558,107


2016

Enhanced temperature compensation for resistive memory cell circuits
N. Papandreou, H. Pozidis, M. Stanisavljevic
US Patent 9,520,189


Dynamically optimizing flash data retention or endurance based on data write frequency
C. Camp, T. Fisher, A. Fry, N. Papandreou, T. Parnell, H. Pozidis, A. Walls
US Patent 9,496,043

Correlation detector
N. Papandreou, A. Sebastian, T. Tuma
US Patent 9,466,364

Data encoding in solid-state storage apparatus
T. Mittelholzer, N. Papandreou, H. Pozidis
GB Patent 2522960

Error-correction encoding and decoding
T. Mittelholzer, N. Papandreou, T. Parnell, H. Pozidis
GB Patent 2525430


Read-detection in multi-level cell memory
T. Mittelholzer, N. Papandreou, H. Pozidis
US Patent 9,305,639

Read measurement of resistive memory cells
N. Papandreou, H. Pozidis, A. Sebastian
US Patent 9,236,120

Background threshold voltage shifting using base and delta threshold voltage shift values in flash memory
C. Camp, T. Fisher, A. Fry, N. Ioannou, I. Koltsidas, N. Papandreou, T. Parnell, R. Pletka, H. Pozidis, S. Tomic
US Patent 9,251,909


2015

Detecting codewords in solid-state storage devices
T. Mittelholzer, N. Papandreou, H. Pozidis
US Patent 8,930,803


Programming of phase-change memory cells
A. Pantazi, N. Papandreou, H. Pozidis, A. Sebastian
US Patent 9,070,438

Read-detection in solid-state storage devices
T. Mittelholzer, N. Papandreou, H. Pozidis
US Patent 8,938,665

Level placement in solid-state memory
N. Papandreou, H. Pozidis
US Patent 9,047,179


2014


Determining cell-state in phase-change memory
U. Frey, A. Pantazi, N. Papandreou, H. Pozidis, A. Sebastian
US Patent 8,755,214


2013

Read/write operations in solid-state storage devices
T. Mittelholzer, N. Papandreou, H. Pozidis
WO/2013/093669

Multilevel programming of phase change memory
E. Eleftheriou, A. Pantazi, N. Papandreou, H. Pozidis, A. Sebastian
US Patent 8,351,251




2012

Programming of phase-change memory cells
A. Pantazi, N. Papandreou, H. Pozidis, A. Sebastian, U. Frey
WO/2012/120400

Cell-state determination in phase-change memory
E. Eleftheriou, A. Pantazi, N. Papandreou, H. Pozidis, A. Sebastian
WO/2012/029007


2011

Programming at least one multi-level phase change memory cell
E. Eleftheriou, A. Pantazi, N. Papandreou, H. Pozidis, A. Sebastian
WO/2011/121491




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