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Hiroshima, Japan

Hirotec Corporation

USPTO Granted Patents = 21

EPO Patents = 4

Trademarks = 1

Forward Citations = 113

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40 inventors (with patents filed for the assignee):

Makoto Tominaga (2 out of 2 patents)

Kiminori Washika (2 out of 2 patents)

Ikuo Nishikawa (2 out of 7 patents)

4. Toshihiko Oonishi (2 out of 4 patents)

5. Katsumi Tomioka (2 out of 7 patents)

6. Kouji Shimoichi (2 out of 2 patents)

7. Takehiro Shibata (1 out of 1 patent)

8. Sho Takai (1 out of 1 patent)

9. Kohei Horike (1 out of 1 patent)

10. Yousuke Kawahito (1 out of 1 patent)

11. Takahiro Tochioka (1 out of 22 patents)

12. Naoyuki Kobayashi (1 out of 2 patents)

13. Etsuo Kosaka (1 out of 1 patent)

14. Kazuo Tanigawa (1 out of 1 patent)

15. Masaru Kono (1 out of 1 patent)

21 patents: Sort by Forward Citations

1. 11826964 - Method of bonding thermoplastic resin and metal (2023-11-28),

2. 11253902 - Hemming apparatus (2022-02-22),

3. 10792720 - Hemming device and hemming method (2020-10-06),

4. 10744719 - Method for bonding metal and resin and metal resin bonded body (2020-08-18),

5. 8146251 - Method of manufacturing catalytic converters (2012-04-03),

6. 8065902 - Hemming apparatus (2011-11-29),

7. 8033155 - Press die set for forming flange and flange forming method (2011-10-11),

8. 7575408 - Work conveying method and conveying apparatus employing the conveying method (2009-08-18),

9. 7451785 - Flexible tube (2008-11-18),

10. 7434443 - Compound press-forming apparatus and compound press-forming method (2008-10-14),

11. 7390049 - Vehicle door (2008-06-24),

12. 7111894 - Automobile door structure (2006-09-26),

13. 6378348 - Hemming process and hemming apparatus (2002-04-30),

14. 6295858 - Hemming apparatus (2001-10-02),

15. 6177029 - Photostorage and emissive material which provides color options (2001-01-23),

HIROTEC CORPORATION is a global automotive tier-one supplier specializing in the production of body-in-white closures, exhaust systems, and closure manufacturing equipment. With over 80 years of experience, HIROTEC supplies its innovative products to leading automobile manufacturers worldwide. The company's commitment to quality, technology, and customer satisfaction has made it a trusted partner in the automotive industry.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

21 Patents

#21 in Hiroshima, 729-3431

#2,800 in Japan

#29,052 in the World

Hiroshima, Japan

Hirotec Corporation

Forward Citations = 113

40 inventors:

Makoto Tominaga (2 out of 2 patents)

Kiminori Washika (2 out of 2 patents)

Ikuo Nishikawa (2 out of 7 patents)

4. Toshihiko Oonishi (2 out of 4 patents)

5. Katsumi Tomioka (2 out of 7 patents)

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