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Sumitomo Metal Industries, Inc.

USPTO Granted Patents = 929

% Expired Patents = 7.9

CIPO Patents = 153

EPO Patents = 88

Trademarks = 7

Forward Citations = 9,398

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1,498 inventors (with patents filed for the assignee):

Chihiro Hayashi (29 out of 38 patents)

Kunio Kondo (29 out of 60 patents)

Tomio Yamakawa (23 out of 37 patents)

4. Kazuhiro Ogawa (21 out of 41 patents)

5. Masaaki Igarashi (20 out of 58 patents)

6. Kazuhiro Shimoda (19 out of 38 patents)

7. Yasutaka Okada (18 out of 20 patents)

8. Tomohiko Omura (16 out of 36 patents)

9. Kunio Goto (15 out of 42 patents)

10. Sumio Iida (14 out of 16 patents)

11. Yuji Arai (13 out of 203 patents)

12. Shigeo Nagasaku (13 out of 19 patents)

13. Masakatsu Ueda (12 out of 13 patents)

14. Toshiyuki Matsumoto (12 out of 34 patents)

15. Kazuyuki Nakasuji (12 out of 13 patents)

Core Competencies:

Threaded Connections

Seamless Pipes

High-Strength Alloys

Hydrocarbon Wells

Lubricant Composition

Galling-Resistant Components

Cold-Rolled Steel

Ultrasonic Testing

Manufacturing Methods

Austenitic Stainless Steel

High-Alloy Tubes

Fatigue Resistant Components

929 patents: Sort by Forward Citations

1. 9909371 - Assembly for producing a threaded connection, method for making up and breaking out said connection and use of said connection in a work over riser (2018-03-06),

2. 9822591 - Tubular component for drilling and operating hydrocarbon wells, and resulting threaded connection (2017-11-21),

3. 9290714 - Galling-resistant threaded tubular component and process for coating said component (2016-03-22),

4. 9273521 - Threaded connection (2016-03-01),

5. 9206376 - Galling-resistant threaded tubular component, and process for coating said component (2015-12-08),

6. 9109726 - Set for obtaining a threaded connection, method for making up and breaking out said connection, and use of said connection in a riser (2015-08-18),

7. 8925975 - Set for producing a threaded connection for drilling and operating hydrocarbon wells, and resulting threaded connection (2015-01-06),

8. 8863564 - Lubricant composition for hot metal working and method of hot metal working using the same (2014-10-21),

9. 8827322 - Threaded connection for drilling and operating hydrocarbon wells (2014-09-09),

10. 8795450 - Manufacturing method for a steel pipe for fuel injection pipe (2014-08-05),

11. 8770003 - Method for producing seamless pipe and method for determining length of billet for use in producing seamless pipe (2014-07-08),

12. 8735334 - Lubrication composition with an adaptable coefficient of friction, for a threaded element of a threaded tubular connection component (2014-05-27),

13. 8678448 - Threaded connection (2014-03-25),

14. 8663400 - Low alloy steel for high-pressure hydrogen gas environment and container for high-pressure hydrogen (2014-03-04),

15. 8544179 - Inspection method of gauge for a self-locking threading of a tubular connection used in the oil industry (2013-10-01),

Company Overview

Sumitomo Metal Industries, Inc., headquartered in Osaka, Japan, specializes in the development and manufacturing of advanced threaded connections and seamless pipes. The company is recognized for its expertise in high-strength alloys and components designed for hydrocarbon wells, focusing on enhancing performance and durability. Their innovations include galling-resistant materials and lubricant compositions, alongside cold-rolled steel products. Sumitomo's commitment to quality is underscored by their use of ultrasonic testing to ensure the reliability of their offerings.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

929 Patents

#30 in Osaka

#238 in Japan

#1,097 in the World

Sumitomo Metal Industries, Inc.

Forward Citations = 9,398

1,498 inventors:

Chihiro Hayashi (29 out of 38 patents)

Kunio Kondo (29 out of 60 patents)

Tomio Yamakawa (23 out of 37 patents)

4. Kazuhiro Ogawa (21 out of 41 patents)

5. Masaaki Igarashi (20 out of 58 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Metal Industries, Inc.. Retrieved from https://idiyas.com/company/sumitomo-metal-industries

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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