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For the Inventor, By the Inventor

Nara, Japan

Okamoto Corporation

Calculating rank
USPTO Granted Patents = 39

% Expired Patents = 38.5



Trademarks = 3

Forward Citations = 249

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61 inventors (with patents filed for the assignee):

goldMedal Takao Fukui (7 out of 8 patents)

silverMedal Hideo Hirano (5 out of 6 patents)

bronzeMedal Masatoshi Kaneda (4 out of 4 patents)

4.  Kousuke Noguchi (4 out of 4 patents)

5.  Tianfu Zhao (4 out of 4 patents)

6.  Masao Nakagaki (4 out of 4 patents)

7.  Toshio Ando (3 out of 3 patents)

8.  Takahiro Araki (3 out of 3 patents)

9.  Chika Watatani (3 out of 3 patents)

10.  Kiyokazu Shuku (3 out of 3 patents)

11.  Susumu Hara (3 out of 3 patents)

12.  Tomoya Suzuki (3 out of 3 patents)

13.  Masaaki Makikawa (2 out of 4 patents)

14.  Hiromi Kashihara (2 out of 2 patents)

15.  Naomi Hamazaki (2 out of 2 patents)


Core Competencies:
Wearable Garment
Piezoelectric Fiber
Knitting Machine
Tubular Fabric
Vapor-Permeable
Sock Design
Legwear
Silk Protein
Multi-Stage Structure
Anti-Pilling Treatment
Textile Product
Knitting Method

39 patents:

1. 12733692 - Multi-knitted wearable garment (2026-09-15),
2. D1121947 - Legwear (2026-04-14),
3. D1070330 - Legwear (2025-04-14),
4. 12063862 - Piezoelectric fiber composite having separate joint portions and piezoelectric clothing containing the same (2024-08-13),
5. D919954 - Sock (2021-05-25),
6. D903294 - Sock with nonslip part (2020-12-01),
7. D892487 - Sock (2020-08-11),
8. 10513807 - Knitting machine capable of changing pile length and manufacturing method of knitted fabric having different pile lengths (2019-12-24),
9. 10487426 - Tubular fabric, method of knitting tubular fabric, and sock (2019-11-26),
10. D855305 - Sock with nonslip part (2019-08-06),
11. 10219932 - Protection garment (2019-03-05),
12. D838468 - Sock with nonslip parts (2019-01-22),
13. 10094054 - Stitch-size controlled knit product (2018-10-09),
14. 10060055 - Stitch-size controlled knit product (2018-08-28),
15. 10011927 - Stitch-size controllable knitting machine, and manufacturing method of knitted fabric (2018-07-03),
Company Overview
Okamoto Corporation, headquartered in Nara, Japan, specializes in the development and manufacturing of high-performance materials and products across various sectors. The company is renowned for its expertise in rubber and plastic technologies, producing items such as industrial components, medical devices, and consumer goods. With a strong emphasis on innovation, Okamoto engages in advanced research to enhance product quality and functionality, catering to both domestic and international markets.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Okamoto Corporation USPTO Patent Assignee Logo
39 Patents

#8 in Nara

#2,007 in Japan

#17,475 in the World

Nara, JP
Nara, Japan

Okamoto Corporation

Forward Citations = 249

61 inventors:

goldMedal Takao Fukui (7 out of 8 patents)

silverMedal Hideo Hirano (5 out of 6 patents)

bronzeMedal Masatoshi Kaneda (4 out of 4 patents)

4.  Kousuke Noguchi (4 out of 4 patents)

5.  Tianfu Zhao (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Okamoto Corporation. Retrieved from https://idiyas.com/company/okamoto

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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