For the Inventor, By the Inventor

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Aichi-ken, Japan

Shinwa Seiko Co., Ltd.

USPTO Granted Patents = 15

Trademarks = 1

Forward Citations = 72

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8 inventors (with patents filed for the assignee):

Takashi Asai (5 out of 18 patents)

Hiroto Ogawa (3 out of 5 patents)

Hidekazu Torii (3 out of 3 patents)

4. Yoshiki Iwatsuka (2 out of 2 patents)

5. Naoki Umemura (1 out of 2 patents)

6. Takahisa Ito (1 out of 1 patent)

7. Yasuhiko Kobayashi (1 out of 1 patent)

8. Yoshihiro Takabatake (1 out of 7 patents)

15 patents: Sort by Forward Citations

1. 7527317 - Sunvisor for vehicle (2009-05-05),

2. 7458628 - Vehicle sun visors with support rods (2008-12-02),

3. 7422088 - Blocking devices for hollow structures (2008-09-09),

4. 7338108 - Sun visor for vehicles (2008-03-04),

5. 7275778 - Vehicle sun visors (2007-10-02),

6. 7258470 - Vehicle sun visors having lighting devices (2007-08-21),

7. 7234751 - Vehicle sun visors and methods for manufacturing the same (2007-06-26),

8. 7219947 - Sun visor for vehicle (2007-05-22),

9. 7213865 - Blow molded vehicle sun visors and methods of manufacturing such sun visors (2007-05-08),

10. 7192075 - Sun visor for vehicle and method of manufacturing the same (2007-03-20),

11. 7144062 - Vehicle sun visors (2006-12-05),

12. 7140664 - Vehicle sun visors (2006-11-28),

13. 7131682 - Vehicle sun visors having mirrors (2006-11-07),

14. 7118156 - Sun visor for vehicle (2006-10-10),

15. 7066522 - Vehicle sun visor (2006-06-27),

Shinwa Seiko Co., Ltd. is a leading manufacturing company established in Japan. With over 30 years of experience, we specialize in the production of high-quality precision tools and measurement instruments for various industries. Our commitment to innovation and customer satisfaction has allowed us to become a trusted partner for businesses worldwide. Visit our website to explore our extensive range of products and discover how Shinwa Seiko can meet your precision tool requirements.

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USPTO Data Jan 1 1976 - Dec 16 2025

15 Patents

#11 in Aichi-ken

#3,367 in Japan

#38,696 in the World

Aichi-ken, Japan

Shinwa Seiko Co., Ltd.

Forward Citations = 72

8 inventors:

Takashi Asai (5 out of 18 patents)

Hiroto Ogawa (3 out of 5 patents)

Hidekazu Torii (3 out of 3 patents)

4. Yoshiki Iwatsuka (2 out of 2 patents)

5. Naoki Umemura (1 out of 2 patents)

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