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Tomoegawa Paper Co., Inc.

USPTO Granted Patents = 209

EPO Patents = 5

Forward Citations = 2,037

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218 inventors (with patents filed for the assignee):

Osamu Oka (31 out of 31 patents)

Yukinori Sakumoto (19 out of 19 patents)

Takeshi Nishigaya (18 out of 18 patents)

4. Takeshi Hashimoto (16 out of 17 patents)

5. Kyoichi Sasaki (14 out of 19 patents)

6. Kensaku Higashi (14 out of 17 patents)

7. Tatsushi Kobayashi (14 out of 17 patents)

8. Masayoshi Suzuki (13 out of 25 patents)

9. Chikara Murata (11 out of 12 patents)

10. Masaharu Kobayashi (11 out of 11 patents)

11. Fumiyoshi Yamanashi (11 out of 11 patents)

12. Atsushi Koshimura (11 out of 11 patents)

13. Haruo Okutani (10 out of 10 patents)

14. Ritsu Kawase (9 out of 13 patents)

15. Hitoshi Narushima (9 out of 9 patents)

Core Competencies:

Optical Fiber Connection

Electrophotography Toner

Optical Interconnection

Antiglare Film

Lithium Ion Battery Separator

Ink Jet Recording Sheet

Semiconductor Device Manufacturing

Optical Connection Structure

Fluororesin Fiber Paper

Non-Magnetic Toner

Adhesive Composition

Optical Sheet Production

209 patents: Sort by Forward Citations

1. 8336486 - Tape core wire manufacturing apparatus, tape core wire wiring apparatus and wiring method (2012-12-25),

2. 7810229 - Tape core wire wiring apparatus (2010-10-12),

3. 7682764 - Resin coated carrier for electrophotography and two-component developer for electrophotography made therefrom (2010-03-23),

4. 7513694 - Component for connecting optical fibers, optical fiber connection structure, and optical fiber connecting method (2009-04-07),

5. 7509009 - Optical fiber structure and method of manufacturing same (2009-03-24),

6. 7502536 - Optical fiber tape core and production method therefor (2009-03-10),

7. 7458729 - Optical connecting method and optical connection structure (2008-12-02),

8. 7422375 - Optical connection structure and optical connection method (2008-09-09),

9. 7378209 - Toner for electrophotography and method for forming image using the same (2008-05-27),

10. 7314695 - Toner for developing electrostatic charge image (2008-01-01),

11. 7312145 - Electronic member, method for making the same, and semiconductor device (2007-12-25),

12. 7311994 - Separator for lithium ion secondary battery and lithium ion secondary battery provided therewith (2007-12-25),

13. 7286737 - Optical fiber tape core and production method therefor (2007-10-23),

14. 7283304 - Antiglare film (2007-10-16),

15. 7192196 - Optical fiber connection component, optical fiber connection structure, and optical fiber connection method (2007-03-20),

Tomoegawa Paper Co., Inc. is a Japanese company specializing in manufacturing and distributing paper products. With over 70 years of experience in the industry, Tomoegawa Paper has established itself as a global leader in the paper manufacturing market. The company offers a wide range of high-quality paper products including specialty papers, thermal papers, and industrial papers. Tomoegawa Paper is committed to innovation, sustainability, and customer satisfaction in all aspects of their business operations.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

209 Patents

#301 in Tokyo

#669 in Japan

#3,953 in the World

Tomoegawa Paper Co., Inc.

Forward Citations = 2,037

218 inventors:

Osamu Oka (31 out of 31 patents)

Yukinori Sakumoto (19 out of 19 patents)

Takeshi Nishigaya (18 out of 18 patents)

4. Takeshi Hashimoto (16 out of 17 patents)

5. Kyoichi Sasaki (14 out of 19 patents)

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