For the Inventor, By the Inventor

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Marshall, TX, United States of America

S4, Inc.

USPTO Granted Patents = 3

% Expired Patents = 100.0

Trademarks = 7

Forward Citations = 12

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9 inventors (with patents filed for the assignee):

Takashi Tsunehiro (2 out of 61 patents)

Kunihiro Katayama (2 out of 107 patents)

Hajime Yamagami (2 out of 28 patents)

4. Kouichi Terada (2 out of 19 patents)

5. Kenichi Kaki (2 out of 38 patents)

6. Takeshi Furuno (2 out of 29 patents)

7. Yoshihiro Hayashi (2 out of 21 patents)

8. Hitoshi Miwa (1 out of 64 patents)

9. Hiroaki Kotani (1 out of 46 patents)

3 patents: Sort by Forward Citations

1. 8804431 - Clock synchronized non-volatile memory device (2014-08-12),

2. 8031536 - Storage device employing a flash memory (2011-10-04),

3. 7715243 - Storage device employing a flash memory (2010-05-11),

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USPTO Data Jan 1 1976 - Sep 29 2026

3 Patents

#14 in Marshall, TX

#4,782 in Texas

#73,766 in US

Marshall, TX, United States of America

S4, Inc.

Forward Citations = 12

9 inventors:

Takashi Tsunehiro (2 out of 61 patents)

Kunihiro Katayama (2 out of 107 patents)

Hajime Yamagami (2 out of 28 patents)

4. Kouichi Terada (2 out of 19 patents)

5. Kenichi Kaki (2 out of 38 patents)

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