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Hamamatsu, Japan

Sunao Okamura

USPTO Granted Patents = 18

Average Co-Inventor Count = 1.4

ph-index = 9

Forward Citations = 231(Granted Patents)

Location History:

Shizuoka, JP (1996 - 2005)
Hamamatsu, JP (1999 - 2021)

Company Filing History:

18 out of 5,452

Yamaha Corporation

Years Active: 1996-2021

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. D933629 - Amplifier (2021-10-19),

2. D903625 - Amplifier (2020-12-01),

3. D718809 - Digital piano (2014-12-02),

4. D718808 - Digital piano (2014-12-02),

5. D718375 - Digital piano (2014-11-25),

6. D668710 - Electronic keyboard (2012-10-09),

7. D589929 - Combined speaker and amplifier (2009-04-07),

8. D579914 - Combined speaker and amplifier (2008-11-04),

9. D579441 - Combined speaker and amplifier (2008-10-28),

10. D538259 - Combined speaker and amplifier (2007-03-13),

11. D520494 - Speaker (2006-05-09),

12. D510381 - Electronic keyboard instrument (2005-10-04),

13. D507291 - Electronic keyboard instrument (2005-07-12),

14. D499442 - Electronic keyboard instrument (2004-12-08),

15. D474801 - Piano (2003-05-21),

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