Nagumo; Tsutomu
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nagumo; Tsutomu.The latest application filed is for "acoustic converter and sound output device".
- Nagumo; Tsutomu - Aichi JP
- Nagumo; Tsutomu - Saitama JP
| Patent | Date |
|---|---|
| Acoustic converter and sound output device Grant 10,993,037 - Miyagawa , et al. April 27, 2 | 2021-04-27 |
| Acoustic Converter And Sound Output Device App 20200275214 - MIYAGAWA; TAKEHIRO ; et al. | 2020-08-27 |
| Acoustic conversion device and acoustic conversion device assembly method Grant 8,948,439 - Nagumo , et al. February 3, 2 | 2015-02-03 |
| Acoustic conversion device Grant 8,634,587 - Nagumo , et al. January 21, 2 | 2014-01-21 |
| Acoustic conversion device and acoustic conversion device assembly method Grant 8,630,439 - Nagumo , et al. January 14, 2 | 2014-01-14 |
| Acoustic conversion device Grant 8,588,456 - Nagumo , et al. November 19, 2 | 2013-11-19 |
| Portable telephone and electronic device Grant 8,204,476 - Morimoto , et al. June 19, 2 | 2012-06-19 |
| Acoustic Conversion Device App 20110311090 - Nagumo; Tsutomu ; et al. | 2011-12-22 |
| Acoustic Conversion Device And Acoustic Conversion Device Assembly Method App 20110311088 - Nagumo; Tsutomu ; et al. | 2011-12-22 |
| Acoustic Conversion Device App 20110311091 - Nagumo; Tsutomu ; et al. | 2011-12-22 |
| Acoustic Conversion Device And Acoustic Conversion Device Assembly Method App 20110311089 - Nagumo; Tsutomu ; et al. | 2011-12-22 |
| Portable Telephone And Electronic Device App 20070223792 - Morimoto; Junji ; et al. | 2007-09-27 |
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