Toshihiko Nara

This inventor holds 10 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Elevayor Engineering and Service Co., Ltd.. Active years: 1976-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshihiko Nara. Retrieved from https://idiyas.com/inventor/toshihiko-nara

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 3.8

ph-index = 8

Forward Citations = 182(Granted Patents)

Location History:

Katsuta, JA (1976)
Katsuta, JP (1978 - 1993)

Company Filing History:

Hitachi Elevayor Engineering and Service Co., Ltd.

patent

where one patent can have more than one assignee

Years Active: 1976-1993

Loading Chart...

10 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5193651 - Elevator apparatus (1993-03-16),

2. 5154261 - Electromagnetic disc brake for elevator lifting apparatus (1992-10-13),

3. 5090515 - Passenger transport installation, vehicle for use therein, and method of (1992-02-25),

4. 5086882 - Elevator apparatus provided with guiding device used for preventing (1992-02-11),

5. 5067593 - Braking device for elevator winding machine and elevator using the (1991-11-26),

6. 4846309 - Elevator hoisting apparatus (1989-07-11),

7. 4830146 - Fluid-pressure elevator (1989-05-16),

8. 4775031 - Hydraulic elevator and control method thereof (1988-10-04),

9. 4117908 - Elevator having rope guide means (1978-10-03),

10. 3991856 - Elevator cable oscillation-absorbing device (1976-11-16),

Title: The Innovative Contributions of Toshihiko Nara

Introduction

Toshihiko Nara is a prominent inventor based in Katsuta, Japan. He has made significant contributions to the field of elevator technology, holding a total of 10 patents. His work focuses on enhancing the safety and efficiency of elevator systems.

Latest Patents

One of Nara's latest inventions is an elevator apparatus designed to improve the stability of the car during operation. This apparatus includes guide devices with guide members that engage with guide rails, ensuring the car remains properly positioned. The design incorporates a resilient support member that allows for movement in a direction perpendicular to the guide rail, effectively preventing lateral vibrations caused by bending or installation errors.

Another notable patent is the electromagnetic disc brake for elevator lifting apparatuses. This innovative brake system features a disc that is spline-coupled with a rotational shaft. The braking mechanism includes an armature that clamps the disc, with braking springs that press the armature against it. The design also includes an electromagnetic coil that generates magnetic flux, enhancing the braking efficiency and safety of the elevator system.

Career Highlights

Throughout his career, Toshihiko Nara has worked with esteemed companies such as Hitachi, Ltd. and Hitachi Elevator Engineering and Service Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in elevator technology.

Collaborations

Nara has collaborated with notable coworkers, including Masayuki Shigeta and Jun Sugahara. Their combined expertise has contributed to the advancement of elevator systems and technologies.

Conclusion

Toshihiko Nara's contributions to elevator technology through his patents and collaborations have significantly impacted the industry. His innovative designs continue to enhance the safety and efficiency of elevator systems worldwide.

Profile summary based on public USPTO records.

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]