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Howa Machinery, Ltd.

USPTO Granted Patents = 93

% Expired Patents = 6.5

EPO Patents = 4

Trademarks = 3

Forward Citations = 491

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85 inventors (with patents filed for the assignee):

Mitsuo Noda (22 out of 22 patents)

Tsuyoshi Yonezawa (11 out of 11 patents)

Yoshio Kurachi (9 out of 9 patents)

4. Tetsuya Oketani (8 out of 8 patents)

5. Takashi Kogiso (7 out of 9 patents)

6. Kenji Sasaki (7 out of 8 patents)

7. Akiyoshi Horikawa (6 out of 11 patents)

8. Hiroshi Yoshida (5 out of 155 patents)

9. Naoki Minowa (5 out of 5 patents)

10. Yutaka Tanaka (5 out of 7 patents)

11. Yoshiaki Mase (5 out of 5 patents)

12. Shigeki Sekiya (5 out of 5 patents)

13. Hiroshi Enomoto (5 out of 5 patents)

14. Hiroshi Nagaosa (4 out of 4 patents)

15. Hirotaka Nishikawa (4 out of 5 patents)

Core Competencies:

Rodless Cylinder

Chuck System

Machining Tools

Linear Actuator

Tool Changing Mechanism

Safety Mechanism

Piston Outline Data

Magnet Type Cylinder

Spinning Frame

Clamping Cylinder

Indexing Device

Multi-Axial Fabric

93 patents: Sort by Forward Citations

1. 11992885 - Chuck-claw guide structure and chuck-claw insertion method (2024-05-28),

2. 11794301 - Chuck grip accuracy checking method, chuck claw exchanging method, and chuck grip accuracy checking device (2023-10-24),

3. 11478861 - Chuck-claw coupling mechanism (2022-10-25),

4. 10280950 - Rod-less cylinder equipped with guide mechanism (2019-05-07),

5. 10082160 - Magnet-type rodless cylinder (2018-09-25),

6. 9513077 - Magazine lock and portable firearm (2016-12-06),

7. 8746129 - Rodless cylinder (2014-06-10),

8. 7669515 - Magnet type rodless cylinder (2010-03-02),

9. 7657410 - Process simulation system (2010-02-02),

10. 7644648 - Magnet type rodless cylinder (2010-01-12),

11. 7568423 - Magnet type rodless cylinder (2009-08-04),

12. 7493848 - Magnet type rodless cylinder (2009-02-24),

13. 7334721 - Sheet-cutting apparatus (2008-02-26),

14. 7194949 - Magnet type rodless cylinder (2007-03-27),

15. 7184854 - Device and method for generating piston outline machining data and computer-readable recording medium on which machining data generation program is recorded (2007-02-27),

Company Overview

Howa Machinery, Ltd., based in Aichi, Japan, specializes in advanced rodless cylinder technology and related automation solutions. The company focuses on developing innovative products such as chuck systems, machining tools, linear actuators, and tool changing mechanisms, all designed to enhance operational efficiency and safety in various industrial applications. With a commitment to precision engineering, Howa Machinery plays a significant role in the automation sector, providing reliable solutions that meet the evolving needs of manufacturers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

93 Patents

#24 in Aichi

#1,178 in Japan

#8,291 in the World

Howa Machinery, Ltd.

Forward Citations = 491

85 inventors:

Mitsuo Noda (22 out of 22 patents)

Tsuyoshi Yonezawa (11 out of 11 patents)

Yoshio Kurachi (9 out of 9 patents)

4. Tetsuya Oketani (8 out of 8 patents)

5. Takashi Kogiso (7 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Howa Machinery, Ltd.. Retrieved from https://idiyas.com/company/howa-machinery

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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