Hitachi Industrial Equipment System Co.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hitachi Industrial Equipment System Co..The latest application filed is for "frequency converter, motor, motor drive system and maintenance method for motor drive system".
- Hitachi Industrial Equipment System Co. - Tokyo JP
- Hitachi Industrial Equipment System Co. - Chiba-shi JP
| Patent | Date |
|---|---|
| Frequency converter, motor, motor drive system and maintenance method for motor drive system Grant 7,663,337 - Shimozono , et al. February 16, 2 | 2010-02-16 |
| Electric power converter Grant 7,515,422 - Hirota , et al. April 7, 2 | 2009-04-07 |
| Oil-cooled screw compressor Grant 7,473,084 - Tanaka , et al. January 6, 2 | 2009-01-06 |
| Fluidic device Grant 7,472,847 - Mukai , et al. January 6, 2 | 2009-01-06 |
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