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For the Inventor, By the Inventor

Hiroshima, Japan

Delta Kogyo Co., Ltd.

Calculating rank
USPTO Granted Patents = 119

% Expired Patents = 42.9


Forward Citations = 879

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127 inventors (with patents filed for the assignee):

goldMedal Etsunori Fujita (18 out of 112 patents)

silverMedal Yasukazu Oki (11 out of 11 patents)

bronzeMedal Takushi Ujimoto (9 out of 9 patents)

4.  Kiyonori Umezaki (8 out of 10 patents)

5.  Makoto Tarusawa (8 out of 9 patents)

6.  Yumi Ogura (7 out of 59 patents)

7.  Mizuho Ueta (6 out of 6 patents)

8.  Takumi Kusayama (6 out of 6 patents)

9.  Yoshihito Kawashima (6 out of 6 patents)

10.  Jun Fukuda (5 out of 6 patents)

11.  Atsushi Onji (5 out of 5 patents)

12.  Yasuhito Domoto (5 out of 5 patents)

13.  Ryota Okimoto (5 out of 6 patents)

14.  Ryuji Kuwano (4 out of 12 patents)

15.  Mitsuhiro Yamashita (4 out of 4 patents)


Core Competencies:
Automotive Seat
Seat Suspension Mechanism
Reclining Device
Vehicle Seat
Seat Slide Adjuster
Biosignal Measuring Device
Child Seat Lock Device
Shift Lever
Power Seat Control Unit
Airbag Device
Transmission Shifter
Integrated Foam-Molded Product

119 patents:

1. 12734946 - Headrest for vehicular seat and production method therefor (2026-09-15),
2. 12703271 - Reclining device (2026-08-11),
3. 12686080 - Laser welding device and laser welding method with improved fillet formation (2026-07-21),
4. 12539790 - Vehicle seat (2026-02-03),
5. 12533748 - Laser welding device and laser welding method (2026-01-27),
6. 12486894 - Shift lever (2025-12-02),
7. 12458237 - Health monitoring device, computer program, recording medium, and biosignal measuring device (2025-11-04),
8. 12351085 - Vehicle seat (2025-07-08),
9. 12319179 - Seat and seat production method (2025-06-03),
10. 12269382 - Seat suspension mechanism (2025-04-08),
11. 12179639 - Seat sliding device and slide lever connecting structure in the seat sliding device (2024-12-31),
12. 12102193 - Mesh hook surface fastener, production method therefor, and production method for surface fastener-attached molded body (2024-10-01),
13. 12077073 - Seat suspension mechanism (2024-09-03),
14. 12071053 - Seat (2024-08-27),
15. 12036904 - Seat (2024-07-16),
Company Overview
Delta Kogyo Co., Ltd., based in Hiroshima, Japan, specializes in the development and manufacturing of advanced automotive seating solutions. The company focuses on innovative technologies such as seat suspension mechanisms, reclining devices, and seat slide adjusters, enhancing comfort and safety in vehicle interiors. Additionally, Delta Kogyo is involved in the design of biosignal measuring devices and child seat lock devices, contributing to the evolving landscape of automotive engineering and passenger safety.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

119 Patents

#9 in Hiroshima, 729-3431

#1,024 in Japan

#6,706 in the World

Hiroshima, JP
Hiroshima, Japan

Delta Kogyo Co., Ltd.

Forward Citations = 879

127 inventors:

goldMedal Etsunori Fujita (18 out of 112 patents)

silverMedal Yasukazu Oki (11 out of 11 patents)

bronzeMedal Takushi Ujimoto (9 out of 9 patents)

4.  Kiyonori Umezaki (8 out of 10 patents)

5.  Makoto Tarusawa (8 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Delta Kogyo Co., Ltd.. Retrieved from https://idiyas.com/company/delta-kogyo-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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