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Forward Citations = 86

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14 inventors (with patents filed for the assignee):

Yutaka Hirama (2 out of 2 patents)

Takato Yamakoshi (2 out of 2 patents)

Mikio Kawashima (2 out of 2 patents)

4. Yoshimitsu Onoda (2 out of 5 patents)

5. Satoshi Fukuda (1 out of 17 patents)

6. Hiromi Inaba (1 out of 45 patents)

7. Yoshio Sakai (1 out of 58 patents)

8. Kiyoshi Nakamura (1 out of 43 patents)

9. Sadao Hokari (1 out of 16 patents)

10. Takeki Ando (1 out of 15 patents)

11. Naoyuki Outi (1 out of 1 patent)

12. Sadayuki Hori (1 out of 1 patent)

13. Kenzoh Takahashi (1 out of 1 patent)

14. Shigeru Arakawa (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 5155671 - Power converter with current-type inverter (1992-10-13),

2. 4935133 - Magnetic treater (1990-06-19),

3. 4916368 - Controlling method and device for permanent magnet synchronous motor (1990-04-10),

4. 4731224 - Deodorizer (1988-03-15),

5. 4649751 - Supervisory operation control system for protecting elevators or the (1987-03-17),

6. 4597992 - Process for regenerating a man conveyor handrail (1986-07-01),

7. 4427940 - Electromagnetic inspecting apparatus for magnetizable wire rope (1984-01-24),

Hitachi Elevator Engineering & Service Co., Ltd. is a subsidiary of Hitachi Ltd., a global leader in technology and engineering solutions. The company specializes in the design, installation, and maintenance of elevators, escalators, and moving walkways. With a commitment to innovation and customer service, Hitachi Elevator Engineering & Service Co., Ltd. provides safe and reliable vertical transportation solutions for commercial and residential buildings worldwide.

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

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USPTO Data Jan 1 1976 - Dec 2 2025

7 Patents

#2,034 in Tokyo

#5,300 in Japan

Tokyo, Japan

Hitachi Elevator Engineering & Service Co., Ltd.