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For the Inventor, By the Inventor

Yokohama-shi, Japan

Nhk Spring Co., Ltd.


USPTO Granted Patents = 1,233



Trademarks = 21

Forward Citations = 9,578

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1,101 inventors (with patents filed for the assignee):

goldMedal Toshio Kazama (54 out of 54 patents)

silverMedal Masao Hanya (53 out of 54 patents)

bronzeMedal Juji Ojima (47 out of 48 patents)

4.  Shigeru Kuroda (39 out of 39 patents)

5.  Hidekazu Hoshino (39 out of 40 patents)

6.  Hajime Arai (34 out of 34 patents)

7.  Itsuo Takeuchi (30 out of 31 patents)

8.  Hiroyoshi Yamaguchi (30 out of 32 patents)

9.  Yoshiharu Kitamura (29 out of 31 patents)

10.  Toshiki Ando (25 out of 25 patents)

11.  Akira Tange (23 out of 141 patents)

12.  Yukie Yamada (23 out of 23 patents)

13.  Noritoshi Takamura (23 out of 24 patents)

14.  Yoshiki Ono (21 out of 22 patents)

15.  Hiroshi Nakayama (20 out of 67 patents)


Core Competencies:
Tape Drive Device
Circuit Pattern
Coil Spring Device
Bending Structure
Vehicle Seat
Automatic Watercraft Maneuvering
Composite Two-Dimensional Code
Electric Resistance-Welded Steel Tube
Information Processing System
Probe Holder
Production Management System
Ship Propulsion Device Controller

1,233 patents:

1. 12498396 - Probe unit (2025-12-16),
2. 12484144 - Circuit pattern, semi-finished base material for circuit substrate, metal-based circuit substrate, production method for circuit pattern, and production device for circuit pattern (2025-11-25),
3. 12482495 - Head driving device configured to move a head member relative to tape as a recording medium and configured to stably hold the head member (2025-11-25),
4. 12482490 - Tape drive device and method of detecting state of head unit of tape drive device (2025-11-25),
5. 12473955 - Coil spring device (2025-11-18),
6. 12472696 - Bonding method (2025-11-18),
7. 12466088 - Bending structural body (2025-11-11),
8. 12459627 - Steering handle device for vessel (2025-11-04),
9. 12459410 - Seatback of vehicle seat (2025-11-04),
10. 12459139 - Bending structure and joint function part (2025-11-04),
11. 12448105 - Automatic watercraft maneuvering system, watercraft control device, watercraft control method, and recording medium (2025-10-21),
12. 12442425 - Spring member (2025-10-14),
13. 12441220 - Vehicle seat (2025-10-14),
14. 12441216 - Car sickness inhibition device, method, storage medium, and vehicle seat (2025-10-14),
15. 12441008 - Bending structure and conductive device (2025-10-14),
NHK Spring Co., Ltd. is a global leader in the development and manufacturing of automotive suspension springs, seating components, and other precision components for various industries. With a history dating back to 1939, NHK Spring has established a strong reputation for innovation, quality, and reliability. The company's products are utilized in a wide range of applications, from cars and motorcycles to electronic devices and industrial machinery. NHK Spring is committed to advancing technology and providing superior products and services to customers worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

1,233 Patents

#1 in Yokohama-shi

#183 in Japan

#792 in the World

...
Yokohama-shi, Japan

Nhk Spring Co., Ltd.

Forward Citations = 9,578

1,101 inventors:

goldMedal Toshio Kazama (54 out of 54 patents)

silverMedal Masao Hanya (53 out of 54 patents)

bronzeMedal Juji Ojima (47 out of 48 patents)

4.  Shigeru Kuroda (39 out of 39 patents)

5.  Hidekazu Hoshino (39 out of 40 patents)

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