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Sanwa Shutter Corporation

USPTO Granted Patents = 23

% Expired Patents = 4.3

Forward Citations = 405

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45 inventors (with patents filed for the assignee):

Kenji Yamaguchi (5 out of 52 patents)

Noriaki Tokuyama (5 out of 5 patents)

Yoshitsugu Utsumi (4 out of 4 patents)

4. Kenji Hosoyama (4 out of 4 patents)

5. Masakazu Makino (3 out of 3 patents)

6. Fumitoshi Okazaki (3 out of 3 patents)

7. Masato Hirao (3 out of 3 patents)

8. Masaaki Munekata (3 out of 3 patents)

9. Hideo Hirabayashi (3 out of 10 patents)

10. Atsushi Matsumura (2 out of 27 patents)

11. Yoshihiro Otsuka (2 out of 3 patents)

12. Yasunori Kobayashi (2 out of 8 patents)

13. Kazunobu Fukano (2 out of 2 patents)

14. Kiyoshi Abe (2 out of 27 patents)

15. Takeaki Hamada (2 out of 2 patents)

23 patents: Sort by Forward Citations

1. 7389807 - Sheet shutter device (2008-06-24),

2. 6457508 - Sunshade roll screen (2002-10-01),

3. 6230785 - Electrically-driven closure apparatus for building (2001-05-15),

4. 6125907 - Electrically-driven closure apparatus for building (2000-10-03),

5. 5799716 - Electric-powered shutter apparatus for a building opening (1998-09-01),

6. 5460216 - Device for moving a winding shaft in a building shutter (1995-10-24),

7. 5277009 - Exterior wall units comprising siding members and tiles (1994-01-11),

8. 5265663 - Architectural shutter curtain device (1993-11-30),

9. 5265662 - Shutter curtain for a building opening (1993-11-30),

10. 5205336 - Rolling shutter (1993-04-27),

11. D332147 - Bay window (1992-12-29),

12. 5172742 - Panel shutter device (1992-12-22),

13. D331468 - Bay window (1992-12-01),

14. 5161593 - Shutter assembly for a bay window (1992-11-10),

15. D328795 - Skylight (1992-08-18),

Sanwa Shutter Corporation, headquartered in Tokyo, specializes in the development and manufacturing of high-quality shutter systems and related products. The company focuses on innovative solutions for residential and commercial applications, emphasizing security, energy efficiency, and aesthetic design. With a commitment to advanced technology, Sanwa Shutter integrates modern materials and engineering practices to enhance the functionality and durability of its offerings, serving a diverse clientele across Japan and beyond.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

23 Patents

#1,244 in Tokyo

#2,702 in Japan

#27,649 in the World

Sanwa Shutter Corporation

Forward Citations = 405

45 inventors:

Kenji Yamaguchi (5 out of 52 patents)

Noriaki Tokuyama (5 out of 5 patents)

Yoshitsugu Utsumi (4 out of 4 patents)

4. Kenji Hosoyama (4 out of 4 patents)

5. Masakazu Makino (3 out of 3 patents)

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