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Sango Co., Ltd.

USPTO Granted Patents = 66

% Expired Patents = 30.3

EPO Patents = 6

Forward Citations = 449

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83 inventors (with patents filed for the assignee):

Tohru Irie (16 out of 16 patents)

Masashi Ota (8 out of 8 patents)

Kentaro Nozu (5 out of 5 patents)

4. Akinobu Morikawa (5 out of 5 patents)

5. Kentaro Nodu (5 out of 5 patents)

6. Yukinori Suzuki (4 out of 15 patents)

7. Kouichi Izuhara (3 out of 3 patents)

8. Makoto Daifuku (3 out of 3 patents)

9. Yoshihiro Tsuchiya (2 out of 2 patents)

10. Kazunari Matsuura (2 out of 3 patents)

11. Ichiro Tsumagari (2 out of 14 patents)

12. Ryo Shibuya (2 out of 10 patents)

13. Masahiro Shirai (2 out of 2 patents)

14. Atsushi Koide (2 out of 7 patents)

15. Yasushi Miyata (2 out of 2 patents)

Core Competencies:

Exhaust Heat Recovery

Pipe Bending

Lithium Secondary Battery

Burner

Catalytic Converter

Muffler

Heat Exchanger

Hardening Apparatus

Support Structure

Molding Die

Emission System

Spindle Mechanism

66 patents: Sort by Forward Citations

1. 12214395 - Extrusion molding method for differential thickness pipe and extrusion molding apparatus for differential thickness pipe (2025-02-04),

2. 12158224 - Housing type pipe joint (2024-12-03),

3. 11384678 - Heat insulating cover for exhaust device (2022-07-12),

4. 11047289 - Support structure for exhaust system part (2021-06-29),

5. 10941935 - Evaporation type burner (2021-03-09),

6. 10704494 - Heat recovery structure (2020-07-07),

7. 10684008 - Evaporation type burner (2020-06-16),

8. 10675667 - Pipe bend die unit (2020-06-09),

9. 10662490 - Hardening apparatus for a long member, and a hardening method for a long member (2020-05-26),

10. D879153 - Exhaust heat recovery apparatus for automobiles (2020-03-24),

11. 10253671 - Heat exchanger, and exhaust heat recovery apparatus having the heat exchanger (2019-04-09),

12. 10213819 - Press forming method (2019-02-26),

13. 9901968 - Pipe bend die unit, and pipe bending apparatus having the unit (2018-02-27),

14. 9809092 - Door impact beam for vehicle (2017-11-07),

15. 9707610 - Pipe bend die unit, and pipe bending apparatus having the unit (2017-07-18),

Company Overview

Sango Co., Ltd., based in Nagoya, Japan, specializes in the development and manufacturing of advanced exhaust systems. The company focuses on innovative technologies such as exhaust heat recovery, catalytic converters, and mufflers, contributing to enhanced vehicle efficiency and reduced emissions. Additionally, Sango is involved in the production of components for lithium secondary batteries and heat exchangers, showcasing its commitment to sustainable energy solutions and automotive engineering excellence.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

66 Patents

#22 in Nagoya

#1,458 in Japan

#11,167 in the World

Sango Co., Ltd.

Forward Citations = 449

83 inventors:

Tohru Irie (16 out of 16 patents)

Masashi Ota (8 out of 8 patents)

Kentaro Nozu (5 out of 5 patents)

4. Akinobu Morikawa (5 out of 5 patents)

5. Kentaro Nodu (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sango Co., Ltd.. Retrieved from https://idiyas.com/company/sango-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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