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Twinbird Corporation

USPTO Granted Patents = 43

% Expired Patents = 32.6

EPO Patents = 5

Trademarks = 5

Forward Citations = 693

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36 inventors (with patents filed for the assignee):

Kaname Maruyama (12 out of 12 patents)

Kazuya Sone (6 out of 6 patents)

Mineyuki Inoue (6 out of 6 patents)

4. Katsuhiko Yoshida (4 out of 4 patents)

5. Hideto Urasawa (4 out of 4 patents)

6. Kazuo Maezawa (3 out of 3 patents)

7. Masahiko Hori (3 out of 3 patents)

8. Takeshi Yamada (3 out of 3 patents)

9. Shuichi Taniguchi (3 out of 3 patents)

10. Takeshi Suzuki (3 out of 3 patents)

11. Takashi Honda (3 out of 3 patents)

12. Kazuya Kondo (3 out of 3 patents)

13. Katsunari Utsugi (3 out of 3 patents)

14. Jun Komada (2 out of 2 patents)

15. Kazuya Tsuji (2 out of 2 patents)

Core Competencies:

Free-Piston Stirling Engine

Electric Vacuum Cleaner

Thermosiphon

Massaging Device

Cyclonic Vacuum Cleaner

Reciprocating Motion Engine

Portable Refrigerator

Liquid Crystal Television

Lighting Apparatus

Portable Shower

Electromagnetic Reciprocal Drive

Fixation Framework

43 patents: Sort by Forward Citations

1. 12435911 - Free-piston Stirling engine (2025-10-07),

2. 12424793 - Plug lock mechanism (2025-09-23),

3. 11473524 - Reciprocating motion engine (2022-10-18),

4. 11255581 - Free piston Stirling refrigerator (2022-02-22),

5. 9267735 - Dryer (2016-02-23),

6. 7927294 - Massaging device (2011-04-19),

7. D631625 - Electric vacuum cleaner (2011-01-25),

8. 7692339 - Stirling cycle engine (2010-04-06),

9. D569106 - Electric shampoo brush (2008-05-20),

10. 7243498 - Fin structure (2007-07-17),

11. 7234319 - Thermosiphon (2007-06-26),

12. 7150069 - Electric vacuum cleaner (2006-12-19),

13. 7122919 - Fixation framework for ring-shaped permanent magnet (2006-10-17),

14. 7070639 - Cyclonic vacuum cleaner (2006-07-04),

15. 7055321 - Suspension mechanism for stirling cycle engine (2006-06-06),

Twinbird Corporation, based in Tsubame, Japan, specializes in the development and manufacturing of innovative household appliances and energy-efficient technologies. The company is recognized for its advancements in free-piston Stirling engines and reciprocating motion engines, which enhance energy conversion efficiency. Twinbird also produces a range of consumer products, including cyclonic and electric vacuum cleaners, thermoelectric refrigerators, and massaging devices, showcasing its commitment to integrating cutting-edge technology into everyday solutions.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Twinbird Corporation

43 Patents

#2 in Tsubame

#1,884 in Japan

#16,010 in the World

Twinbird Corporation

Forward Citations = 693

36 inventors:

Kaname Maruyama (12 out of 12 patents)

Kazuya Sone (6 out of 6 patents)

Mineyuki Inoue (6 out of 6 patents)

4. Katsuhiko Yoshida (4 out of 4 patents)

5. Hideto Urasawa (4 out of 4 patents)

Please report any incorrect information to [email protected]

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