Robert T. Leonard

Person

Raleigh, NC, US

People

Patents Grantslast 30 patents

Information Patent Grant
Large diameter silicon carbide wafers
- Patent number 12,054,850
- Issue date Aug 6, 2024
- Wolfspeed, Inc.
- Yuri Khlebnikov
- C30 - CRYSTAL GROWTH
Information Patent Grant
Nondestructive characterization for crystalline wafers
- Patent number 12,040,355
- Issue date Jul 16, 2024
- Wolfspeed, Inc.
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Grant
Reduced optical absorption for silicon carbide crystalline materials
- Patent number 12,024,794
- Issue date Jul 2, 2024
- Wolfspeed, Inc.
- Robert Tyler Leonard
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dislocation distribution for silicon carbide crystalline materials
- Patent number 11,519,098
- Issue date Dec 6, 2022
- Wolfspeed, Inc.
- Yuri Khlebnikov
- C30 - CRYSTAL GROWTH
Information Patent Grant
Alignment for wafer images
- Patent number 11,361,454
- Issue date Jun 14, 2022
- Wolfspeed, Inc.
- Robert Tyler Leonard
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Methods and apparatuses related to shaping wafers fabricated by ion...
- Patent number 10,867,797
- Issue date Dec 15, 2020
- Cree, Inc.
- Alexander Suvorov
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of producing high quality silicon carbide crystal in a seede...
- Patent number 9,790,619
- Issue date Oct 17, 2017
- Cree, Inc.
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Grant
Producing high quality bulk silicon carbide single crystal by manag...
- Patent number 9,200,381
- Issue date Dec 1, 2015
- Cree, Inc.
- Robert Tyler Leonard
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Micropipe-free silicon carbide and related method of manufacture
- Patent number 9,099,377
- Issue date Aug 4, 2015
- Cree, Inc.
- Cem Basceri
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method for controlled growth of silicon carbide and structures prod...
- Patent number 9,048,166
- Issue date Jun 2, 2015
- Cree, Inc.
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Grant
One hundred millimeter SiC crystal grown on off-axis seed
- Patent number 8,980,445
- Issue date Mar 17, 2015
- Cree, Inc.
- Robert T. Leonard
- C30 - CRYSTAL GROWTH
Information Patent Grant
Low micropipe 100 mm silicon carbide wafer
- Patent number 8,866,159
- Issue date Oct 21, 2014
- Cree, Inc.
- Adrian Powell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low 1C screw dislocation 3 inch silicon carbide wafer
- Patent number 8,785,946
- Issue date Jul 22, 2014
- Cree, Inc.
- Adrian Powell
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Low 1C screw dislocation 3 inch silicon carbide wafer
- Patent number 8,624,267
- Issue date Jan 7, 2014
- Cree, Inc.
- Adrian Powell
Information Patent Grant
Low micropipe 100 mm silicon carbide wafer
- Patent number 8,618,552
- Issue date Dec 31, 2013
- Cree, Inc.
- Adrian Powell
- C30 - CRYSTAL GROWTH
Information Patent Grant
Micropipe-free silicon carbide and related method of manufacture
- Patent number 8,410,488
- Issue date Apr 2, 2013
- Cree, Inc.
- Cem Basceri
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Low 1C screw dislocation 3 inch silicon carbide wafer
- Patent number 8,384,090
- Issue date Feb 26, 2013
- Cree, Inc.
- Adrian Powell
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method for controlled growth of silicon carbide and structures prod...
- Patent number 8,377,806
- Issue date Feb 19, 2013
- Cree, Inc.
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Grant
One hundred millimeter single crystal silicon carbide wafer
- Patent number 8,147,991
- Issue date Apr 3, 2012
- Cree, Inc.
- Jason Ronald Jenny
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
One hundred millimeter high purity semi-insulating single crystal s...
- Patent number 7,601,441
- Issue date Oct 13, 2009
- Cree, Inc.
- Jason Ronald Jenny
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process for producing high quality large size silicon carbide crystals
- Patent number 7,563,321
- Issue date Jul 21, 2009
- Cree, Inc.
- Adrian Powell
- C30 - CRYSTAL GROWTH
Information Patent Grant
Three inch silicon carbide wafer with low warp, bow, and TTV
- Patent number 7,422,634
- Issue date Sep 9, 2008
- Cree, Inc.
- Adrian Powell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
One hundred millimeter single crystal silicon carbide wafer
- Patent number 7,351,286
- Issue date Apr 1, 2008
- Cree, Inc.
- Robert Tyler Leonard
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
One hundred millimeter single crystal silicon carbide wafer
- Patent number 7,323,051
- Issue date Jan 29, 2008
- Cree, Inc.
- Hudson M. Hobgood
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Double side polished wafer scratch inspection tool
- Patent number 7,319,518
- Issue date Jan 15, 2008
- Cree, Inc.
- Robert Tyler Leonard
- G01 - MEASURING TESTING
Information Patent Grant
Seeded single crystal silicon carbide growth and resulting crystals
- Patent number 7,316,747
- Issue date Jan 8, 2008
- Cree, Inc.
- Jason Ronald Jenny
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low micropipe 100 mm silicon carbide wafer
- Patent number 7,314,521
- Issue date Jan 1, 2008
- Cree, Inc.
- Adrian Powell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low 1c screw dislocation 3 inch silicon carbide wafer
- Patent number 7,314,520
- Issue date Jan 1, 2008
- Cree, Inc.
- Adrian Powell
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
LARGE DIAMETER SILICON CARBIDE WAFERS
- Publication number 20240352622
- Publication date Oct 24, 2024
- Wolfspeed, Inc.
- Yuri Khlebnikov
- C30 - CRYSTAL GROWTH
Information Patent Application
REDUCED OPTICAL ABSORPTION FOR SILICON CARBIDE CRYSTALLINE MATERIALS
- Publication number 20240344239
- Publication date Oct 17, 2024
- Wolfspeed, Inc.
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Application
NONDESTRUCTIVE CHARACTERIZATION FOR CRYSTALLINE WAFERS
- Publication number 20240332352
- Publication date Oct 3, 2024
- Wolfspeed, Inc.
- Robert Tyler Leonard
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
REDUCED OPTICAL ABSORPTION FOR SILICON CARBIDE CRYSTALLINE MATERIALS
- Publication number 20220403552
- Publication date Dec 22, 2022
- Wolfspeed, Inc.
- Robert Tyler Leonard
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LARGE DIMENSION SILICON CARBIDE SINGLE CRYSTALLINE MATERIALS WITH R...
- Publication number 20220189768
- Publication date Jun 16, 2022
- Cree, Inc.
- Yuri Khlebnikov
- C30 - CRYSTAL GROWTH
Information Patent Application
ALIGNMENT FOR WAFER IMAGES
- Publication number 20210272298
- Publication date Sep 2, 2021
- Cree, Inc.
- Robert Tyler Leonard
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DISLOCATION DISTRIBUTION FOR SILICON CARBIDE CRYSTALLINE MATERIALS
- Publication number 20210230769
- Publication date Jul 29, 2021
- Cree, Inc.
- Yuri Khlebnikov
- C30 - CRYSTAL GROWTH
Information Patent Application
LARGE DIAMETER SILICON CARBIDE WAFERS
- Publication number 20210198804
- Publication date Jul 1, 2021
- Cree, Inc.
- Yuri Khlebnikov
- C30 - CRYSTAL GROWTH
Information Patent Application
METHODS AND APPARATUSES RELATED TO SHAPING WAFERS FABRICATED BY ION...
- Publication number 20210066081
- Publication date Mar 4, 2021
- Cree, Inc.
- Alexander Suvorov
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
NONDESTRUCTIVE CHARACTERIZATION FOR CRYSTALLINE WAFERS
- Publication number 20200365685
- Publication date Nov 19, 2020
- Cree, Inc.
- Robert Tyler Leonard
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHODS AND APPARATUSES RELATED TO SHAPING WAFERS FABRICATED BY ION...
- Publication number 20200258742
- Publication date Aug 13, 2020
- Cree, Inc.
- Alexander Suvorov
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LOW MICROPIPE 100 MM SILICON CARBIDE WAFER
- Publication number 20140291698
- Publication date Oct 2, 2014
- Cree, Inc.
- Adrian Powell
- C30 - CRYSTAL GROWTH
Information Patent Application
MICROPIPE-FREE SILICON CARBIDE AND RELATED METHOD OF MANUFACTURE
- Publication number 20130181231
- Publication date Jul 18, 2013
- Cree, Inc.
- CEM BASCERI
- C30 - CRYSTAL GROWTH
Information Patent Application
LOW 1C SCREW DISLOCATION 3 INCH SILICON CARBIDE WAFER
- Publication number 20130161651
- Publication date Jun 27, 2013
- Cree, Inc.
- Adrian Powell
- C30 - CRYSTAL GROWTH
Information Patent Application
METHOD FOR CONTROLLED GROWTH OF SILICON CARBIDE AND STRUCTURES PROD...
- Publication number 20130153928
- Publication date Jun 20, 2013
- Cree, Inc.
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Application
ONE HUNDRED MILLIMETER SINGLE CRYSTAL SILICON CARBIDE WAFER
- Publication number 20110290174
- Publication date Dec 1, 2011
- NAVY, SECRETARY OF THE, UNITED STATES OF AMERICA
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Application
METHOD FOR CONTROLLED GROWTH OF SILICON CARBIDE AND STRUCTURES PROD...
- Publication number 20110266556
- Publication date Nov 3, 2011
- Cree, Inc.
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Application
ONE HUNDRED MILLIMETER SINGLE CRYSTAL SILICON CARBIDE WAFER
- Publication number 20110024766
- Publication date Feb 3, 2011
- Cree, Inc.
- Jason Ronald Jenny
- C30 - CRYSTAL GROWTH
Information Patent Application
Low Micropipe 100 mm Silicon Carbide Wafer
- Publication number 20080237609
- Publication date Oct 2, 2008
- Cree, Inc.
- Adrian Powell
- C30 - CRYSTAL GROWTH
Information Patent Application
Low 1C Screw Dislocation 3 Inch Silicon Carbide Wafer
- Publication number 20080169476
- Publication date Jul 17, 2008
- Cree, Inc.
- Adrian Powell
- C30 - CRYSTAL GROWTH
Information Patent Application
MICROPIPE-FREE SILICON CARBIDE AND RELATED METHOD OF MANUFACTURE
- Publication number 20080083366
- Publication date Apr 10, 2008
- Cree, Inc.
- Cem Basceri
- C30 - CRYSTAL GROWTH
Information Patent Application
MICROPIPE-FREE SILICON CARBIDE AND RELATED METHOD OF MANUFACTURE
- Publication number 20080067524
- Publication date Mar 20, 2008
- Cree, Inc.
- Cem Basceri
- C30 - CRYSTAL GROWTH
Information Patent Application
One Hundred Millimeter SiC Crystal Grown on Off-Axis Seed
- Publication number 20080008641
- Publication date Jan 10, 2008
- Robert T. Leonard
- C30 - CRYSTAL GROWTH
Information Patent Application
One hundred millimeter single crystal silicon carbide wafer
- Publication number 20070240633
- Publication date Oct 18, 2007
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Application
One hundred millimeter single crystal silicon carbide water
- Publication number 20070240630
- Publication date Oct 18, 2007
- Robert Tyler Leonard
- C30 - CRYSTAL GROWTH
Information Patent Application
LOW MICROPIPE 100 MM SILICON CARBIDE WAFER
- Publication number 20070209577
- Publication date Sep 13, 2007
- Adrian Powell
- C30 - CRYSTAL GROWTH
Information Patent Application
Double side polished wafer scratch inspection tool
- Publication number 20070081150
- Publication date Apr 12, 2007
- Robert Tyler Leonard
- G01 - MEASURING TESTING
Information Patent Application
Three inch silicon carbide wafer with low warp, bow, and TTV
- Publication number 20060225645
- Publication date Oct 12, 2006
- Adrian Powell
- C30 - CRYSTAL GROWTH
Information Patent Application
Seeded single crystal silicon carbide growth and resulting crystals
- Publication number 20060213430
- Publication date Sep 28, 2006
- Jason Ronald Jenny
- C30 - CRYSTAL GROWTH
Information Patent Application
Process for producing high quality large size silicon carbide crystals
- Publication number 20060118037
- Publication date Jun 8, 2006
- Adrian Powell
- C30 - CRYSTAL GROWTH

Robert T. Leonard

Person

Patents Grantslast 30 patents

Large diameter silicon carbide wafers

Nondestructive characterization for crystalline wafers

Reduced optical absorption for silicon carbide crystalline materials

Dislocation distribution for silicon carbide crystalline materials

Alignment for wafer images

Methods and apparatuses related to shaping wafers fabricated by ion...

Method of producing high quality silicon carbide crystal in a seede...

Producing high quality bulk silicon carbide single crystal by manag...

Micropipe-free silicon carbide and related method of manufacture

Method for controlled growth of silicon carbide and structures prod...

One hundred millimeter SiC crystal grown on off-axis seed

Low micropipe 100 mm silicon carbide wafer

Low 1C screw dislocation 3 inch silicon carbide wafer

Low 1C screw dislocation 3 inch silicon carbide wafer

Low micropipe 100 mm silicon carbide wafer

Micropipe-free silicon carbide and related method of manufacture

Low 1C screw dislocation 3 inch silicon carbide wafer

Method for controlled growth of silicon carbide and structures prod...

One hundred millimeter single crystal silicon carbide wafer

One hundred millimeter high purity semi-insulating single crystal s...

Process for producing high quality large size silicon carbide crystals

Three inch silicon carbide wafer with low warp, bow, and TTV

One hundred millimeter single crystal silicon carbide wafer

One hundred millimeter single crystal silicon carbide wafer

Double side polished wafer scratch inspection tool

Seeded single crystal silicon carbide growth and resulting crystals

Low micropipe 100 mm silicon carbide wafer

Low 1c screw dislocation 3 inch silicon carbide wafer

Patents Applicationslast 30 patents

LARGE DIAMETER SILICON CARBIDE WAFERS

REDUCED OPTICAL ABSORPTION FOR SILICON CARBIDE CRYSTALLINE MATERIALS

NONDESTRUCTIVE CHARACTERIZATION FOR CRYSTALLINE WAFERS

REDUCED OPTICAL ABSORPTION FOR SILICON CARBIDE CRYSTALLINE MATERIALS

LARGE DIMENSION SILICON CARBIDE SINGLE CRYSTALLINE MATERIALS WITH R...

ALIGNMENT FOR WAFER IMAGES

DISLOCATION DISTRIBUTION FOR SILICON CARBIDE CRYSTALLINE MATERIALS

LARGE DIAMETER SILICON CARBIDE WAFERS

METHODS AND APPARATUSES RELATED TO SHAPING WAFERS FABRICATED BY ION...

NONDESTRUCTIVE CHARACTERIZATION FOR CRYSTALLINE WAFERS

METHODS AND APPARATUSES RELATED TO SHAPING WAFERS FABRICATED BY ION...

LOW MICROPIPE 100 MM SILICON CARBIDE WAFER

MICROPIPE-FREE SILICON CARBIDE AND RELATED METHOD OF MANUFACTURE

LOW 1C SCREW DISLOCATION 3 INCH SILICON CARBIDE WAFER

METHOD FOR CONTROLLED GROWTH OF SILICON CARBIDE AND STRUCTURES PROD...

ONE HUNDRED MILLIMETER SINGLE CRYSTAL SILICON CARBIDE WAFER

METHOD FOR CONTROLLED GROWTH OF SILICON CARBIDE AND STRUCTURES PROD...

ONE HUNDRED MILLIMETER SINGLE CRYSTAL SILICON CARBIDE WAFER

Low Micropipe 100 mm Silicon Carbide Wafer

Low 1C Screw Dislocation 3 Inch Silicon Carbide Wafer

MICROPIPE-FREE SILICON CARBIDE AND RELATED METHOD OF MANUFACTURE

MICROPIPE-FREE SILICON CARBIDE AND RELATED METHOD OF MANUFACTURE

One Hundred Millimeter SiC Crystal Grown on Off-Axis Seed

One hundred millimeter single crystal silicon carbide wafer

One hundred millimeter single crystal silicon carbide water

LOW MICROPIPE 100 MM SILICON CARBIDE WAFER

Double side polished wafer scratch inspection tool

Three inch silicon carbide wafer with low warp, bow, and TTV

Seeded single crystal silicon carbide growth and resulting crystals

Process for producing high quality large size silicon carbide crystals