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Chugai Ro Co., Ltd.

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USPTO Granted Patents = 74

% Expired Patents = 14.9

EPO Patents = 19

Forward Citations = 444

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124 inventors (with patents filed for the assignee):

Yoshikazu Shimosato (6 out of 6 patents)

Masayuki Imose (6 out of 6 patents)

Koji Murakami (4 out of 9 patents)

4. Kinya Kisoda (4 out of 4 patents)

5. Takao Seno (4 out of 4 patents)

6. Tadashi Yamamoto (4 out of 4 patents)

7. Takao Tokumoto (3 out of 3 patents)

8. Tsutomu Nishio (3 out of 4 patents)

9. Tadashi Seki (3 out of 5 patents)

10. Hiroshi Shirono (3 out of 3 patents)

11. Yasuyuki Shintaku (3 out of 3 patents)

12. Tetsuo Akiyama (3 out of 3 patents)

13. Takakatsu Adachi (3 out of 3 patents)

14. Hiroshige Nakagawa (3 out of 3 patents)

15. Masato Nagata (3 out of 3 patents)

Core Competencies:

Heat Treating

Coating Method

Plasma Processing

Continuous Furnace

Gas Carburizing

Annealing Furnace

Burner Technology

Metal Strip

Vacuum Sintering

Thermal Processing

Furnace Design

Temperature Control

74 patents: Sort by Forward Citations

1. 12436514 - Method for simulating processing state of belt-shaped body (2025-10-07),

2. 12350704 - Coating apparatus and coating method (2025-07-08),

3. 11041621 - Auxiliary burner for electric furnace (2021-06-22),

4. 10935234 - Auxiliary burner for electric furnace (2021-03-02),

5. 10676282 - Belt-shaped material conveying apparatus capable of correcting meandering (2020-06-09),

6. 10663229 - Cooling apparatus of heating furnace (2020-05-26),

7. 10648662 - Nozzle structure for hydrogen gas burner apparatus (2020-05-12),

8. 10557666 - Cooling apparatus for metal strip (2020-02-11),

9. 10527283 - Burner tile, burner, and furnace (2020-01-07),

10. 10124272 - Vapor circulation regeneration system (2018-11-13),

11. 9824867 - Plasma generation apparatus, deposition apparatus, and plasma generation method (2017-11-21),

12. 9696090 - Thermal processing furnace for workpieces (2017-07-04),

13. 9625212 - Walking-beam type heating furnace (2017-04-18),

14. 8986458 - Plasma processing apparatus (2015-03-24),

15. 8919277 - Coating applicator, coating application method and electronic device (2014-12-30),

Company Overview

Chugai Ro Co., Ltd., based in Osaka, Japan, specializes in the development and manufacturing of advanced heat treating furnaces. The company focuses on innovative technologies in heat treating, including gas carburizing and annealing processes, as well as coating methods and plasma processing. Chugai Ro is recognized for its expertise in continuous furnace systems and burner technology, catering to various industries that require precision metal treatment solutions. Their commitment to quality and technological advancement positions them as a leader in the heat treating sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

74 Patents

#147 in Osaka

#1,366 in Japan

#10,140 in the World

Chugai Ro Co., Ltd.

Forward Citations = 444

124 inventors:

Yoshikazu Shimosato (6 out of 6 patents)

Masayuki Imose (6 out of 6 patents)

Koji Murakami (4 out of 9 patents)

4. Kinya Kisoda (4 out of 4 patents)

5. Takao Seno (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Chugai Ro Co., Ltd.. Retrieved from https://idiyas.com/company/chugai-ro-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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