Inventor · disambiguated record
Leo J. Schowalter
Also filed as: SCHOWALTER LEO · SCHOWALTER LEO J
87 granted patents·7 pending applications·879 citations·filing 1992–2025
99Inventor score
Top patents by PatentIndex Score
94 records- 0198US8962359B2Photon extraction from nitride ultraviolet light-emitting devicesSCHOWALTER LEO J·Filed 2012·Granted Feb 24, 2015·35 cites·18 claims
- 0298US8323406B2Defect reduction in seeded aluminum nitride crystal growthBONDOKOV ROBERT T·Filed 2008·Granted Dec 4, 2012·47 cites·44 claims
- 0397US11840773B1Aluminum nitride single crystals having controllable color and methods of forming themCRYSTAL IS INC·Filed 2021·Granted Dec 12, 2023·4 cites·20 claims
- 0497US9028612B2Growth of large aluminum nitride single crystals with thermal-gradient controlBONDOKOV ROBERT T·Filed 2011·Granted May 12, 2015·11 cites·24 claims
- 0597US8080833B2Thick pseudomorphic nitride epitaxial layersGRANDUSKY JAMES R·Filed 2010·Granted Dec 20, 2011·61 cites·20 claims
- 0697US7641735B2Doped aluminum nitride crystals and methods of making themCRYSTAL IS INC·Filed 2006·Granted Jan 5, 2010·32 cites·27 claims
- 0796US8834630B2Defect reduction in seeded aluminum nitride crystal growthCRYSTAL IS INC·Filed 2012·Granted Sep 16, 2014·17 cites·33 claims
- 0896US8580035B2Large aluminum nitride crystals with reduced defects and methods of making themCRYSTAL IS INC·Filed 2012·Granted Nov 12, 2013·15 cites·19 claims
- 0996US8123859B2Method and apparatus for producing large, single-crystals of aluminum nitrideSCHOWALTER LEO J·Filed 2010·Granted Feb 28, 2012·24 cites·24 claims
- 1096US8012257B2Methods for controllable doping of aluminum nitride bulk crystalsCRYSTAL IS INC·Filed 2007·Granted Sep 6, 2011·26 cites·42 claims
- 1195US10550493B2Thermal control for formation and processing of aluminum nitrideBONDOKOV ROBERT T·Filed 2018·Granted Feb 4, 2020·7 cites·24 claims
- 1295US10068973B2Doped aluminum nitride crystals and methods of making themSLACK GLEN A·Filed 2016·Granted Sep 4, 2018·7 cites·23 claims
- 1395US9447519B2Aluminum nitride bulk crystals having high transparency to untraviolet light and methods of forming themCRYSTAL IS INC·Filed 2015·Granted Sep 20, 2016·11 cites·34 claims
- 1495US9299880B2Pseudomorphic electronic and optoelectronic devices having planar contactsGRANDUSKY JAMES R·Filed 2014·Granted Mar 29, 2016·35 cites·17 claims
- 1595US8896020B2Method and apparatus for producing large, single-crystals of aluminum nitrideCRYSTAL IS INC·Filed 2013·Granted Nov 25, 2014·14 cites·16 claims
- 1695US8747552B2Doped aluminum nitride crystals and methods of making themSLACK GLEN A·Filed 2009·Granted Jun 10, 2014·19 cites·16 claims
- 1795US8222650B2Nitride semiconductor heterostructures and related methodsSCHOWALTER LEO J·Filed 2009·Granted Jul 17, 2012·36 cites·27 claims
- 1895US7638346B2Nitride semiconductor heterostructures and related methodsCRYSTAL IS INC·Filed 2006·Granted Dec 29, 2009·42 cites·25 claims
- 1995US7211146B2Powder metallurgy crucible for aluminum nitride crystal growthCRYSTAL IS INC·Filed 2004·Granted May 1, 2007·44 cites·32 claims
- 2094US11168411B2Impurity control during formation of aluminum nitride crystals and thermal treatment of aluminum nitride crystalsBONDOKOV ROBERT T·Filed 2019·Granted Nov 9, 2021·3 cites·29 claims
- 2194US9437430B2Thick pseudomorphic nitride epitaxial layersSCHOWALTER LEO J·Filed 2008·Granted Sep 6, 2016·34 cites·28 claims
- 2294US8545629B2Method and apparatus for producing large, single-crystals of aluminum nitrideSCHOWALTER LEO J·Filed 2006·Granted Oct 1, 2013·22 cites·13 claims
- 2394US8349077B2Large aluminum nitride crystals with reduced defects and methods of making themCRYSTAL IS INC·Filed 2006·Granted Jan 8, 2013·18 cites·23 claims
- 2494US6770135B2Method and apparatus for producing large, single-crystals of aluminum nitrideCRYSTAL IS INC·Filed 2002·Granted Aug 3, 2004·60 cites·34 claims
- 2593US11578425B2Thermal control for formation and processing of aluminum nitrideBONDOKOV ROBERT T·Filed 2020·Granted Feb 14, 2023·2 cites·19 claims
- 2693US9525032B2Doped aluminum nitride crystals and methods of making themSLACK GLEN A·Filed 2014·Granted Dec 20, 2016·8 cites·24 claims
- 2793US7776153B2Method and apparatus for producing large, single-crystals of aluminum nitrideCRYSTAL IS INC·Filed 2005·Granted Aug 17, 2010·24 cites·6 claims
- 2893US6719843B2Powder metallurgy tungsten crucible for aluminum nitride crystal growthCRYSTAL IS INC·Filed 2002·Granted Apr 13, 2004·54 cites·21 claims
- 2992US10954608B2UV-transparent aluminum nitride single crystal having a diameter of 35 mm to 150 mm and a predefined UV transparency metric at a wavelength of 265 nmBONDOKOV ROBERT T·Filed 2018·Granted Mar 23, 2021·4 cites·20 claims
- 3092US10106913B2System for growth of large aluminum nitride single crystals with thermal-gradient controlBONDOKOV ROBERT T·Filed 2017·Granted Oct 23, 2018·2 cites·24 claims
- 3191US10074784B2Photon extraction from nitride ultraviolet light-emitting devicesSCHOWALTER LEO J·Filed 2015·Granted Sep 11, 2018·6 cites·24 claims
- 3290US9670591B2Defect reduction in seeded aluminum nitride crystal growthBONDOKOV ROBERT T·Filed 2014·Granted Jun 6, 2017·5 cites·38 claims
- 3390US7037838B2Method for polishing a substrate surfaceCRYSTAL IS INC·Filed 2002·Granted May 2, 2006·53 cites·15 claims
- 3489US10392722B2Defect reduction in seeded aluminum nitride crystal growthCRYSTAL IS INC·Filed 2017·Granted Aug 27, 2019·1 cites·21 claims
- 3589US9680057B2Ultraviolet light-emitting devices incorporating two-dimensional hole gasesMOE CRAIG·Filed 2016·Granted Jun 13, 2017·5 cites·20 claims
- 3688US9935247B2Photon extraction from ultraviolet light-emitting devicesKITAMURA KEN·Filed 2015·Granted Apr 3, 2018·5 cites·46 claims
- 3787US10851474B2Thermal control for formation and processing of aluminum nitrideBONDOKOV ROBERT T·Filed 2019·Granted Dec 1, 2020·2 cites·24 claims
- 3887US7087112B1Nitride ceramics to mount aluminum nitride seed for sublimation growthCRYSTAL IS INC·Filed 2003·Granted Aug 8, 2006·31 cites·20 claims
- 3986US10125432B2Defect reduction in seeded aluminum nitride crystal growthBONDOKOV ROBERT T·Filed 2017·Granted Nov 13, 2018·2 cites·23 claims
- 4084US12264410B2Aluminum nitride crystals having low urbach energy and high transparency to deep-ultraviolet wavelengthsBONDOKOV ROBERT T·Filed 2022·Granted Apr 1, 2025·0 cites·25 claims
- 4184US11913136B2Thermal control for formation and processing of aluminum nitrideBONDOKOV ROBERT T·Filed 2023·Granted Feb 27, 2024·0 cites·36 claims
- 4284US9034103B2Aluminum nitride bulk crystals having high transparency to ultraviolet light and methods of forming themSCHUJMAN SANDRA B·Filed 2010·Granted May 19, 2015·7 cites·35 claims
- 4383US11355664B2Aluminum nitride substrate removal for ultraviolet light-emitting devicesGRANDUSKY JAMES R·Filed 2020·Granted Jun 7, 2022·1 cites·38 claims
- 4483US10407798B2Two-stage seeded growth of large aluminum nitride single crystalsSCHOWALTER LEO J·Filed 2018·Granted Sep 10, 2019·2 cites·20 claims
- 4582US10697085B2Defect reduction in seeded aluminum nitride crystal growthBONDOKOV ROBERT T·Filed 2018·Granted Jun 30, 2020·1 cites·17 claims
- 4681US10692980B2Doped aluminum nitride crystals and methods of making themSLACK GLEN A·Filed 2018·Granted Jun 23, 2020·1 cites·17 claims
- 4781US9771666B2Defect reduction in seeded aluminum nitride crystal growthCRYSTAL IS INC·Filed 2015·Granted Sep 26, 2017·3 cites·40 claims
- 4881US9580833B2Growth of large aluminum nitride single crystals with thermal-gradient controlBONDOKOV ROBERT T·Filed 2015·Granted Feb 28, 2017·1 cites·24 claims
- 4980US11015263B2Defect reduction in seeded aluminum nitride crystal growthCRYSTAL IS INC·Filed 2019·Granted May 25, 2021·0 cites·21 claims
- 5080US10211369B2Ultraviolet light-emitting devices incorporating two-dimensional hole gasesMOE CRAIG·Filed 2017·Granted Feb 19, 2019·2 cites·29 claims
Showing the top 50 of 94 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Leo J. Schowalter files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →