Inventor
HOBART KARL D
US66 patents
⚠️ This page may combine multiple inventors who share the name “HOBART KARL D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
US NAVY
23 patentsUS6497763B2Dec 24, 2002
Electronic device with composite substrate
US NAVY143 citations99
US6328796B1Dec 11, 2001
Single-crystal material on non-single-crystalline substrate
US NAVY280 citations99
US6323108B1Nov 27, 2001
Fabrication ultra-thin bonded semiconductor layers
US NAVY391 citations99
US6242324B1Jun 5, 2001
Method for fabricating singe crystal materials over CMOS devices
US NAVY552 citations99
US6593212B1Jul 15, 2003
Method for making electro-optical devices using a hydrogenion splitting technique
US NAVY102 citations98
US6767749B2Jul 27, 2004
Method for making piezoelectric resonator and surface acoustic wave device using hydrogen implant layer splitting
US NAVY70 citations96
US6201342B1Mar 13, 2001
Automatically sharp field emission cathodes
US NAVY52 citations95
US7535100B2May 19, 2009
Wafer bonding of thinned electronic materials and circuits to high performance substrates
US NAVY31 citations93
US7132321B2Nov 7, 2006
Vertical conducting power semiconductor devices implemented by deep etch
US NAVY42 citations93
US6607969B1Aug 19, 2003
Method for making pyroelectric, electro-optical and decoupling capacitors using thin film transfer and hydrogen ion splitting techniques
US NAVY55 citations93
US6555451B1Apr 29, 2003
Method for making shallow diffusion junctions in semiconductors using elemental doping
US NAVY22 citations93
US8384129B2Feb 26, 2013
Transistor with enhanced channel charge inducing material layer and threshold voltage control
US NAVY19 citations92
US6113451ASep 5, 2000
Atomically sharp field emission cathodes
US NAVY38 citations92
US7282753B2Oct 16, 2007
Vertical conducting power semiconducting devices made by deep reactive ion etching
US NAVY15 citations84
US7759186B2Jul 20, 2010
Method for fabricating junction termination extension with formation of photosensitive dopant mask to control doping profile and lateral width for high-voltage electronic devices
US NAVY14 citations83
US7902513B2Mar 8, 2011
Neutron detector with gamma ray isolation
US NAVY14 citations82
US6787885B2Sep 7, 2004
Low temperature hydrophobic direct wafer bonding
US NAVY17 citations80
US9960266B2May 1, 2018
Damage-free plasma-enhanced CVD passivation of AlGaN/GaN high electron mobility transistors
US NAVY3 citations73
US9466684B2Oct 11, 2016
Transistor with diamond gate
US NAVY4 citations72
US9490356B2Nov 8, 2016
Growth of high-performance III-nitride transistor passivation layer for GaN electronics
US NAVY2 citations63
US7915143B2Mar 29, 2011
Method of mediating forward voltage drift in a SiC device
US NAVY2 citations61
US10312175B1Jun 4, 2019
Diamond air bridge for thermal management of high power devices
US NAVY1 citations60
US8008626B2Aug 30, 2011
Neutron detector with gamma ray isolation
US NAVY3 citations60
US GOV SEC NAVY
11 patentsUS10343900B2Jul 9, 2019
Material structure and method for deep silicon carbide etching
US GOV SEC NAVY3 citations72
US11415518B2Aug 16, 2022
Mapping and evaluating GaN wafers for vertical device applications
US GOV SEC NAVY3 citations71
US11996840B1May 28, 2024
Light controlled switch module
US GOV SEC NAVY2 citations70
US12568716B2Mar 3, 2026
Wafer-scale separation and transfer of GaN material
US GOV SEC NAVY0 citations62
US11649159B2May 16, 2023
Silicon carbide structure, device, and method
US GOV SEC NAVY0 citations62
US11342420B2May 24, 2022
Heterojunction devices and methods for fabricating the same
US GOV SEC NAVY0 citations62
US11227943B2Jan 18, 2022
High electron mobility transistors and methods for fabricating the same
US GOV SEC NAVY0 citations62
US10777644B2Sep 15, 2020
Heterojunction devices and methods for fabricating the same
US GOV SEC NAVY1 citations62
US12446249B2Oct 14, 2025
Polarization-engineered heterogeneous semiconductor heterostructures
US GOV SEC NAVY0 citations61
US12376388B2Jul 29, 2025
Low resistance photoconductive semiconductor switch (PCSS)
US GOV SEC NAVY0 citations60
US11634834B2Apr 25, 2023
Diamond on nanopatterned substrate
US GOV SEC NAVY0 citations57
KUB FRANCIS J
9 patentsUS9006791B2Apr 14, 2015
III-nitride P-channel field effect transistor with hole carriers in the channel
KUB FRANCIS J12 citations92
US8900939B2Dec 2, 2014
Transistor with enhanced channel charge inducing material layer and threshold voltage control
KUB FRANCIS J17 citations92
US9685513B2Jun 20, 2017
Semiconductor structure or device integrated with diamond
KUB FRANCIS J9 citations84
US9246305B1Jan 26, 2016
Light-emitting devices with integrated diamond
KUB FRANCIS J15 citations84
US9196614B2Nov 24, 2015
Inverted III-nitride P-channel field effect transistor with hole carriers in the channel
KUB FRANCIS J7 citations84
US8872159B2Oct 28, 2014
Graphene on semiconductor detector
KUB FRANCIS J8 citations84
US8648390B2Feb 11, 2014
Transistor with enhanced channel charge inducing material layer and threshold voltage control
KUB FRANCIS J6 citations84
US9029833B2May 12, 2015
Graphene on semiconductor detector
KUB FRANCIS J3 citations63
US9275998B2Mar 1, 2016
Inverted P-channel III-nitride field effect tansistor with Hole Carriers in the channel
KUB FRANCIS J2 citations62
HOBART KARL D
3 patentsUS9159641B2Oct 13, 2015
Nanocrystalline diamond three-dimensional films in patterned semiconductor substrates
HOBART KARL D8 citations82
US9305858B2Apr 5, 2016
Nanocrystalline diamond three-dimensional films in patterned semiconductor substrates
HOBART KARL D4 citations71
US8445383B2May 21, 2013
Transparent nanocrystalline diamond contacts to wide bandgap semiconductor devices
HOBART KARL D5 citations69
CALDWELL JOSHUA D
1 patentCHARLES STARK DRAPER LABORATORY INC
1 patentKOEHLER ANDREW D
1 patentTHE GOVERNMENT OF THE US SECRETARY OF THE NAVY
1 patentShowing the top 50 of 66 patents by PatentIndex Score.