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% Expired Patents = 25.0

Forward Citations = 32

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11 inventors (with patents filed for the assignee):

Yoshio Watanabe (2 out of 44 patents)

Hiroyuki Iyama (2 out of 7 patents)

Yasushi Kinoshita (1 out of 8 patents)

4. Naoki Yotsumoto (1 out of 3 patents)

5. Keisuke Nishimura (1 out of 1 patent)

6. Daisuke Nakahara (1 out of 1 patent)

7. Norio Nakazato (1 out of 24 patents)

8. Atsuo Koyama (1 out of 2 patents)

9. Hideo Kuwahara (1 out of 1 patent)

10. Hisato Nakagawa (1 out of 1 patent)

11. Mitsuo Akatsuka (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 7671534 - Liquid crystal display, illuminant module and its manufacturing method (2010-03-02),

2. 4694224 - Lighting apparatus for an electric discharge lamp (1987-09-15),

3. 4503359 - Discharge lamp lighting device (1985-03-05),

4. 4447763 - Discharge lamp lighting device (1984-05-08),

Hitachi Lighting, Ltd. is a leading manufacturer of innovative lighting solutions for commercial, industrial, and residential applications. With a focus on energy efficiency and sustainability, Hitachi Lighting offers a wide range of high-quality and technologically advanced lighting products, including LED fixtures, lamps, and control systems. The company is committed to providing customers with superior lighting solutions that enhance productivity, safety, and comfort in any environment.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

4 Patents

#3,056 in Tokyo

#7,592 in Japan

Tokyo, Japan

Hitachi Lighting, Ltd.