Hitachi Displays Devices, Ltd.

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USPTO Granted Patents = 6

% Expired Patents = 50.0

Forward Citations = 63

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11 inventors (with patents filed for the assignee):

Nobuyuki Koganezawa (3 out of 25 patents)

Akio Tezuka (2 out of 10 patents)

Fumiyuki Sato (2 out of 4 patents)

4. Shigeki Nishizawa (1 out of 22 patents)

5. Yasuhisa Shiraishi (1 out of 27 patents)

6. Shimon Itakura (1 out of 25 patents)

7. Shiro Ueda (1 out of 23 patents)

8. Saburo Watanabe (1 out of 8 patents)

9. Yuji Azuma (1 out of 17 patents)

10. Hisao Hirayama (1 out of 5 patents)

11. Makoto Hasegawa (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 7905613 - LED backlight and liquid crystal display device using thereof (2011-03-15),

2. 7847912 - LCD device with plural fluorescent tube backlight for a rectangular curved display surface of a radius of from two to four times as large as the length of the short-side of the rectangular display region (2010-12-07),

3. 7554625 - Display device and backlight device having plural solid-state emitting element units each emitting at least three colors and contained within a cylindrical air-filled light guide body also surrounded by air (2009-06-30),

4. 7538833 - Liquid crystal display device (2009-05-26),

5. 7527413 - Liquid crystal display device (2009-05-05),

6. 7295263 - Liquid crystal display backlight's light reflection treatment portion that directs light from the light source toward the LCD excluding a transmission region of the LC (2007-11-13),

Company Overview

Hitachi Displays Devices, Ltd. is a global leader in the development and manufacturing of cutting-edge display devices for various industries. With a strong focus on innovation and quality, the company offers a wide range of display solutions that cater to the diverse needs of customers worldwide. Visit their official website for more information.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

6 Patents

#65 in Chiba

#5,990 in Japan

Chiba, Japan