Inventor
PHILIP TIMOTHY MATHEW
US29 patents
Patents
29 patentsUS12329045B2Jun 10, 2025
Phase change memory programming current leakage reduction
IBM2 citations75
US11380836B2Jul 5, 2022
Topological qubit device
IBM5 citations73
US11133058B1Sep 28, 2021
Analog computing architecture for four terminal memory devices
IBM6 citations73
US11621394B2Apr 4, 2023
Multi-layer phase change memory device
IBM2 citations72
US10998193B1May 4, 2021
Spacer-assisted lithographic double patterning
IBM2 citations72
US12593621B2Mar 31, 2026
Phase change multilayer heterostructure with multiple heaters
IBM0 citations62
US12588217B2Mar 24, 2026
Programming current control for artificial intelligence (AI) devices
IBM0 citations62
US12557564B2Feb 17, 2026
Memory cell with a variable element and a phase change memory
IBM0 citations62
US12557556B2Feb 17, 2026
Magnetic tunnel junction device
IBM0 citations62
US12438077B2Oct 7, 2025
Damascene interconnect spacer to facilitate gap fill
IBM0 citations62
US12324365B2Jun 3, 2025
Proximity heater to lower RRAM forming voltage
IBM0 citations62
US12250889B2Mar 11, 2025
Phase change memory cell with double active volume
IBM0 citations62
US12156486B2Nov 26, 2024
Horizontal RRAM device and architecture for variability reduction
IBM0 citations62
US11889773B2Jan 30, 2024
Multi-layer phase change memory device
IBM0 citations62
US11800819B2Oct 24, 2023
Integrated diode memory device
IBM0 citations62
US11711989B2Jul 25, 2023
Phase change memory
IBM0 citations62
US11588103B2Feb 21, 2023
Resistive memory array
IBM0 citations62
US11283015B2Mar 22, 2022
Projected phase change memory devices
IBM0 citations62
US11094590B1Aug 17, 2021
Structurally stable self-aligned subtractive vias
IBM0 citations62
US12527003B2Jan 13, 2026
Memory device with reduced threshold voltage
IBM0 citations61
US11980110B2May 7, 2024
Insulated phase change memory using porous dielectrics
IBM0 citations58
US12402546B2Aug 26, 2025
Composite material phase change memory cell
IBM0 citations56
US12408571B2Sep 2, 2025
Phase change memory with graded heater
IBM0 citations52
US11812676B2Nov 7, 2023
Multi-terminal phase change memory device
IBM0 citations52
US11177160B2Nov 16, 2021
Double patterned lithography using spacer assisted cuts for patterning steps
IBM0 citations52
US11527434B2Dec 13, 2022
Line cut patterning using sacrificial material
IBM0 citations51
US11189527B2Nov 30, 2021
Self-aligned top vias over metal lines formed by a damascene process
IBM0 citations51
US11158536B2Oct 26, 2021
Patterning line cuts before line patterning using sacrificial fill material
IBM0 citations51
US11665985B2May 30, 2023
Projected memory device with reduced minimum conductance state
IBM0 citations50