CRYSTAL IS, INC.
96Patents
90Active
96Granted
54Portfolio score
Filing activity: Sep 20, 2002 → Feb 24, 2023 · 10 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8080833B2 | Thick pseudomorphic nitride epitaxial layers | Electricity | 43 | Active |
| US8323406B2 | Defect reduction in seeded aluminum nitride crystal growth | Emerging Cross-Sectional Technologies | 42 | Active |
| US6770135B2 | Method and apparatus for producing large, single-crystals of aluminum nitride | Emerging Cross-Sectional Technologies | 36 | Expired |
| US7638346B2 | Nitride semiconductor heterostructures and related methods | Electricity | 35 | Active |
| US6719843B2 | Powder metallurgy tungsten crucible for aluminum nitride crystal growth | Emerging Cross-Sectional Technologies | 32 | Expired |
| US9299880B2 | Pseudomorphic electronic and optoelectronic devices having planar contacts | Electricity | 32 | Active |
| US7037838B2 | Method for polishing a substrate surface | Electricity | 31 | Expired |
| US9437430B2 | Thick pseudomorphic nitride epitaxial layers | Electricity | 30 | Active |
| US8962359B2 | Photon extraction from nitride ultraviolet light-emitting devices | Electricity | 29 | Active |
| US7211146B2 | Powder metallurgy crucible for aluminum nitride crystal growth | Emerging Cross-Sectional Technologies | 29 | Expired |
| US8222650B2 | Nitride semiconductor heterostructures and related methods | Electricity | 28 | Active |
| US9293670B2 | Ultraviolet light-emitting devices and methods | Electricity | 27 | Active |
| US7087112B1 | Nitride ceramics to mount aluminum nitride seed for sublimation growth | Chemistry; Metallurgy | 24 | Expired |
| US7641735B2 | Doped aluminum nitride crystals and methods of making them | Electricity | 23 | Active |
| US8012257B2 | Methods for controllable doping of aluminum nitride bulk crystals | Chemistry; Metallurgy | 22 | Active |
| US7776153B2 | Method and apparatus for producing large, single-crystals of aluminum nitride | Electricity | 21 | Active |
| US8123859B2 | Method and apparatus for producing large, single-crystals of aluminum nitride | Electricity | 21 | Active |
| US8545629B2 | Method and apparatus for producing large, single-crystals of aluminum nitride | Emerging Cross-Sectional Technologies | 20 | Active |
| US8088220B2 | Deep-eutectic melt growth of nitride crystals | Chemistry; Metallurgy | 18 | Active |
| US8747552B2 | Doped aluminum nitride crystals and methods of making them | Electricity | 18 | Active |
| US8349077B2 | Large aluminum nitride crystals with reduced defects and methods of making them | Emerging Cross-Sectional Technologies | 15 | Active |
| US8834630B2 | Defect reduction in seeded aluminum nitride crystal growth | Emerging Cross-Sectional Technologies | 14 | Active |
| US8580035B2 | Large aluminum nitride crystals with reduced defects and methods of making them | Emerging Cross-Sectional Technologies | 14 | Active |
| US8896020B2 | Method and apparatus for producing large, single-crystals of aluminum nitride | Emerging Cross-Sectional Technologies | 13 | Active |
| US9028612B2 | Growth of large aluminum nitride single crystals with thermal-gradient control | Chemistry; Metallurgy | 8 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.