Era; Koh
Patent Applications and Registrations
Patent applications and USPTO patent grants for Era; Koh.The latest application filed is for "light emitting element of cubic boron nitride".
- Era; Koh - Tsukuba JP
| Patent | Date |
|---|---|
| Light emitting element of cubic boron nitride Grant 4,980,730 - Mishima , et al. December 25, 1 | 1990-12-25 |
| Method for growing a single crystal of cubic boron nitride semiconductor and method for forming a p-n junction thereof, and light emitting element Grant 4,875,967 - Mishima , et al. October 24, 1 | 1989-10-24 |
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