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For the Inventor, By the Inventor

Tokyo, Japan

Hitachi Building Systems Co., Ltd.

Calculating rank
USPTO Granted Patents = 10

% Expired Patents = 20.0


Forward Citations = 35

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40 inventors (with patents filed for the assignee):

goldMedal Daisuke Matsuka (3 out of 3 patents)

silverMedal Masato Itou (3 out of 3 patents)

bronzeMedal Makoto Hattori (2 out of 103 patents)

4.  Hirofumi Taguchi (2 out of 5 patents)

5.  Kenji Machizawa (2 out of 2 patents)

6.  Toshiaki Hatano (2 out of 2 patents)

7.  Yasushi Watanabe (1 out of 26 patents)

8.  Tomoyuki Hamada (1 out of 36 patents)

9.  Yuta Hamada (1 out of 2 patents)

10.  Yuki Ishida (1 out of 12 patents)

11.  Takashi Fujimoto (1 out of 7 patents)

12.  Nobuaki Yagi (1 out of 34 patents)

13.  Toshiaki Matsuo (1 out of 27 patents)

14.  Naoaki Noguchi (1 out of 4 patents)

15.  Takashi Sekiya (1 out of 8 patents)


10 patents:

1. 12428265 - Inspection device and inspection method for elevating machine (2025-09-30),
2. 12064874 - Work machine unit and articulated robot (2024-08-20),
3. 11953317 - Reference core position calculation device for elevator and reference core position calculation method (2024-04-09),
4. 11913775 - Intra-hoistway measurement system (2024-02-27),
5. D940796 - Robot (2022-01-11),
6. 7194415 - Support system for maintenance contract of elevator (2007-03-20),
7. 6742634 - Magnetic brake system and elevator trouble detection system (2004-06-01),
8. 6701727 - Apparatus and method for managing heat source unit for air conditioner (2004-03-09),
9. 6263696 - Air-cooled absorption type chiller heater and modification method (2001-07-24),
10. 6098756 - Guide rail lubricating device for elevator, and case and oil-retaining (2000-08-08),
Company Overview
Hitachi Building Systems Co., Ltd. specializes in the development and manufacturing of advanced building systems and solutions. The company focuses on integrating cutting-edge technologies in areas such as elevators, escalators, and building management systems, enhancing urban infrastructure and improving the efficiency of building operations. Based in Tokyo, Japan, Hitachi Building Systems is committed to innovation and sustainability, contributing to the modernization of urban environments through its comprehensive product offerings.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

10 Patents

#1,919 in Tokyo

#4,414 in Japan

#56,228 in the World

Tokyo, JP
Tokyo, Japan

Hitachi Building Systems Co., Ltd.

Forward Citations = 35

40 inventors:

goldMedal Daisuke Matsuka (3 out of 3 patents)

silverMedal Masato Itou (3 out of 3 patents)

bronzeMedal Makoto Hattori (2 out of 103 patents)

4.  Hirofumi Taguchi (2 out of 5 patents)

5.  Kenji Machizawa (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Building Systems Co., Ltd.. Retrieved from https://idiyas.com/company/hitachi-building-systems-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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