Keiichi Fujii

USPTO Granted Patents = 15 (Patent Applications = 2)

EPO Patents = 1

Average Co-Inventor Count = 2.7

ph-index = 4

Forward Citations = 52(Granted Patents)

Location History:

Kusatsu, JP (2005 - 2010)
Shiga, JP (2006 - 2024)

Company Filing History:

6 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

6 out of 16,453

Panasonic Corporation

patents

3 out of 166

Nuvoton Technology Corporation Japan

patents

Years Active: 2005-2024

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11965933 - Integrated circuit, battery monitoring device, and battery monitoring system (2024-04-23),

2. 11933854 - Battery management circuit, battery management system, and battery management network (2024-03-19),

3. 11467219 - Battery monitoring device, integrated circuit, and battery monitoring system (2022-10-11),

4. 7940940 - Muting circuit and semiconductor integrated circuit (2011-05-10),

5. 7764797 - Speaker driving device and audio output system (2010-07-27),

6. 7649383 - Bidirectional level shift circuit and bidirectional bus system (2010-01-19),

7. 7605638 - Semiconductor integrated circuit including charge pump circuit (2009-10-20),

8. 7518431 - Semiconductor integrated circuit for processing audio and video signals (2009-04-14),

9. 7474161 - Charge pump circuit (2009-01-06),

10. 7388434 - BTL amplifier (2008-06-17),

11. 7312650 - Step-down voltage output circuit (2007-12-25),

12. 7307465 - Step-down voltage output circuit (2007-12-11),

13. 7015759 - AGC circuit (2006-03-21),

14. 6977550 - AGC circuit (2005-12-20),

15. 6891407 - Analog signal level detecting apparatus (2005-05-10),

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2 patents pending:

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1 patent (EPO):

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