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Mahle Filter Systems Japan Corporation

USPTO Granted Patents = 85

% Expired Patents = 30.6

EPO Patents = 55

Forward Citations = 409

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117 inventors (with patents filed for the assignee):

Masahiro Ariyama (11 out of 15 patents)

Atsushi Nonaka (10 out of 10 patents)

Junpei Omichi (9 out of 10 patents)

4. Koji Yamasaki (7 out of 33 patents)

5. Daizo Ito (6 out of 6 patents)

6. Takashi Hasumi (5 out of 6 patents)

7. Katsuhiro Isoda (5 out of 5 patents)

8. Masashi Shinada (5 out of 5 patents)

9. Masaru Nakano (5 out of 6 patents)

10. Hiroyuki Yoshida (5 out of 60 patents)

11. Kenji Yamashita (4 out of 12 patents)

12. Yuichi Kato (4 out of 25 patents)

13. Shozo Wakamatsu (4 out of 4 patents)

14. Katsuhisa Ohta (4 out of 4 patents)

15. Terumoto Mochizuki (4 out of 4 patents)

Core Competencies:

Heat Exchanger

Air Cleaner

Fuel Vapor Processing

Turbocharger

Honeycomb Adsorbent

Oil Cooler

Intake Manifold

Variable Displacement Pump

Sealing Structure

Electric Pump

Adsorbent

Drain Plug Structure

85 patents: Sort by Forward Citations

1. 12472573 - Screen to be used during brazing of heat exchanger and brazing method for heat exchanger (2025-11-18),

2. 12121998 - Brazing a stacked body with a screen (2024-10-22),

3. 11905875 - Vehicle heat exchange system (2024-02-20),

4. RE49587 - Honeycomb adsorbent, method of manufacturing the honeycomb adsorbent and canister (2023-07-24),

5. 11525425 - Air cleaner (2022-12-13),

6. 11454146 - Drain plug structure for oil pan (2022-09-27),

7. 11448106 - Sealing structure (2022-09-20),

8. 11326562 - Fuel adsorption apparatus and evaporated fuel processing apparatus using fuel adsorption apparatus (2022-05-10),

9. 11311822 - Bubble separator, and fluid circuit for automobile that includes bubble separator (2022-04-26),

10. 10920631 - Head cover for internal combustion engine cylinder head (2021-02-16),

11. 10900716 - Heat exchanger (2021-01-26),

12. 10787941 - Drain nut attachment structure for synthetic resin cover (2020-09-29),

13. 10731760 - Sealing structure (2020-08-04),

14. 10662833 - Oil cooler (2020-05-26),

15. 10641555 - Heat exchanger for vehicle (2020-05-05),

Company Overview

Mahle Filter Systems Japan Corporation, based in Tokyo, specializes in advanced heat exchanger technology and related automotive components. The company focuses on the development and manufacturing of systems such as air cleaners, fuel vapor processing units, turbochargers, and oil coolers. With a commitment to innovation, Mahle integrates cutting-edge solutions like honeycomb adsorbents and variable displacement pumps into its product offerings, catering to the evolving needs of the automotive industry in Japan and beyond.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

85 Patents

#604 in

#1,255 in

#8,962 in the World

Mahle Filter Systems Japan Corporation

Forward Citations = 409

117 inventors:

Masahiro Ariyama (11 out of 15 patents)

Atsushi Nonaka (10 out of 10 patents)

Junpei Omichi (9 out of 10 patents)

4. Koji Yamasaki (7 out of 33 patents)

5. Daizo Ito (6 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mahle Filter Systems Japan Corporation. Retrieved from https://idiyas.com/company/mahle-filter-systems-japan

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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