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Tomoegawa Co., Ltd.

USPTO Granted Patents = 56

EPO Patents = 19

Trademarks = 3

Forward Citations = 82

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97 inventors (with patents filed for the assignee):

Nobuhiro Hashimoto (11 out of 12 patents)

Masayoshi Suzuki (10 out of 25 patents)

Masahide Sugiyama (10 out of 12 patents)

4. Tomoki Furue (7 out of 7 patents)

5. Hiroto Katagiri (7 out of 7 patents)

6. Tsubasa Sakano (6 out of 6 patents)

7. Hideki Moriuchi (5 out of 9 patents)

8. Makoto Goto (4 out of 8 patents)

9. Ryu Harada (4 out of 4 patents)

10. Jun Tochihira (4 out of 9 patents)

11. Kyoichi Sasaki (4 out of 19 patents)

12. Ken Sukegawa (4 out of 14 patents)

13. Takamasa Harada (4 out of 42 patents)

14. Daisuke Muramatsu (3 out of 4 patents)

15. Hajime Tsuda (3 out of 5 patents)

Core Competencies:

Construction Joint Material

Heat Storage Unit

Optical Member

Head-Mounted Display

Multilayer Printed Wiring Board

Thermoplastic Fiber Sheet

Light Guiding Laminate

Anisotropic Optical Film

Optical Connection Component

Sound Transmission Material

Thermosetting Adhesive Composition

Toner for Electrophotography

56 patents: Sort by Forward Citations

1. D1060739 - Construction joint material with adhesive (2025-02-04),

2. 12104857 - Heat storage unit (2024-10-01),

3. 12098998 - Seal material for analyzer, and flow cell, detector, and analyzer using the same (2024-09-24),

4. 12066710 - Optical member and liquid crystal display device (2024-08-20),

5. 11874481 - Head-mounted display (2024-01-16),

6. 11818835 - Multilayer printed wiring board, multilayer metal-clad laminated board, and resin-coated metal foil (2023-11-14),

7. 11445627 - Resin card medium and manufacturing method therefor (2022-09-13),

8. 11408125 - Thermoplastic fiber sheet (2022-08-09),

9. 11344927 - Cleaner (2022-05-31),

10. 11291945 - Self-heating sheet-like material for moisture absorption and desorption, moisture absorption and desorption body, and moisture absorption and desorption device using the same (2022-04-05),

11. 11209587 - Light guiding laminate using anisotropic optical film and planar light source device using the same (2021-12-28),

12. 11126002 - Head-mounted display (2021-09-21),

13. 11124906 - Metal fiber nonwoven fabric (2021-09-21),

14. 10988876 - Cushion paper (2021-04-27),

15. 10843445 - Matched-type electromagnetic wave absorber (2020-11-24),

Tomoegawa Co., Ltd. is a leading Japanese company specializing in the manufacture of paper and related products. Established in 1912, we have a long-standing reputation for delivering high-quality paper solutions to various industries. Our commitment to innovation and sustainable practices has enabled us to develop a diverse range of products, including specialty papers, electrical insulation materials, thermal transfer ribbons, and high-performance materials. With a focus on customer satisfaction, Tomoegawa Co., Ltd. continues to provide reliable, eco-friendly solutions that meet the evolving needs of businesses around the world.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

56 Patents

#663 in Tokyo

#1,571 in Japan

#12,434 in the World

Tomoegawa Co., Ltd.

Forward Citations = 82

97 inventors:

Nobuhiro Hashimoto (11 out of 12 patents)

Masayoshi Suzuki (10 out of 25 patents)

Masahide Sugiyama (10 out of 12 patents)

4. Tomoki Furue (7 out of 7 patents)

5. Hiroto Katagiri (7 out of 7 patents)

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