Nakajima; Hirochika
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nakajima; Hirochika.The latest application filed is for "spectrum measuring equipment utilizing double-image polarizing element".
- Nakajima; Hirochika - Kawasaki JP
| Patent | Date |
|---|---|
| Spectrum measuring equipment utilizing double-image polarizing element Grant 5,080,486 - Shirasaki , et al. January 14, 1 | 1992-01-14 |
| Spatial phase modulating masks and production processes thereof, and processes for the formation of phase-shifted diffraction gratings Grant 4,806,442 - Shirasaki , et al. February 21, 1 | 1989-02-21 |
| Bipolar voltage controlled optical switch using intersecting waveguides Grant 4,730,884 - Seino , et al. March 15, 1 | 1988-03-15 |
| Laser light source device Grant 4,637,027 - Shirasaki , et al. January 13, 1 | 1987-01-13 |
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