Inventor

SCHOWALTER LEO J

US79 patents

⚠️ This page may combine multiple inventors who share the name “SCHOWALTER LEO J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SCHOWALTER LEO J

CRYSTAL IS INC

Doped aluminum nitride crystals and methods of making them

Powder metallurgy tungsten crucible for aluminum nitride crystal growth

Method and apparatus for producing large, single-crystals of aluminum nitride

Method for polishing a substrate surface

Large aluminum nitride crystals with reduced defects and methods of making them

Methods for controllable doping of aluminum nitride bulk crystals

Powder metallurgy crucible for aluminum nitride crystal growth

Large aluminum nitride crystals with reduced defects and methods of making them

Method and apparatus for producing large, single-crystals of aluminum nitride

Nitride semiconductor heterostructures and related methods

Nitride ceramics to mount aluminum nitride seed for sublimation growth

Aluminum nitride bulk crystals having high transparency to untraviolet light and methods of forming them

Aluminum nitride single crystals having controllable color and methods of forming them

Defect reduction in seeded aluminum nitride crystal growth

Defect reduction in seeded aluminum nitride crystal growth

Method for polishing a substrate surface

BONDOKOV ROBERT T

Defect reduction in seeded aluminum nitride crystal growth

UV-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 nm

Thermal control for formation and processing of aluminum nitride

Defect reduction in seeded aluminum nitride crystal growth

Growth of large aluminum nitride single crystals with thermal-gradient control

Thermal control for formation and processing of aluminum nitride

Impurity control during formation of aluminum nitride crystals and thermal treatment of aluminum nitride crystals

Thermal control for formation and processing of aluminum nitride

Defect reduction in seeded aluminum nitride crystal growth

Defect reduction in seeded aluminum nitride crystal growth

System for growth of large aluminum nitride single crystals with thermal-gradient control

Defect reduction in seeded aluminum nitride crystal growth

SCHOWALTER LEO J

Photon extraction from nitride ultraviolet light-emitting devices

Thick pseudomorphic nitride epitaxial layers

Method and apparatus for producing large, single-crystals of aluminum nitride

Nitride semiconductor heterostructures and related methods

Method and apparatus for producing large, single-crystals of aluminum nitride

Photon extraction from nitride ultraviolet light-emitting devices

Two-stage seeded growth of large aluminum nitride single crystals

Photon extraction from nitride ultraviolet light-emitting devices

Two-stage seeded growth of large aluminum nitride single crystals

SLACK GLEN A

Doped aluminum nitride crystals and methods of making them

Doped aluminum nitride crystals and methods of making them

Doped aluminum nitride crystals and methods of making them

Doped aluminum nitride crystals and methods of making them

GRANDUSKY JAMES R

Thick pseudomorphic nitride epitaxial layers

Pseudomorphic electronic and optoelectronic devices having planar contacts

Pseudomorphic electronic and optoelectronic devices having planar contacts

MOE CRAIG

Ultraviolet light-emitting devices incorporating two-dimensional hole gases

Ultraviolet light-emitting devices incorporating graded layers and compositional offsets

Ultraviolet light-emitting devices incorporating two-dimensional hole gases

KITAMURA KEN

Photon extraction from ultraviolet light-emitting devices

Photon extraction from ultraviolet light-emitting devices

SCHUJMAN SANDRA B

Aluminum nitride bulk crystals having high transparency to ultraviolet light and methods of forming them