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Toho Rayon Co., Ltd.

USPTO Granted Patents = 29

CIPO Patents = 1

Forward Citations = 436

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57 inventors (with patents filed for the assignee):

Yasuhisa Nagata (7 out of 8 patents)

Hiroyasu Ogawa (6 out of 16 patents)

Hayashi Takahashi (3 out of 5 patents)

4. Yoshihiro Endoh (3 out of 5 patents)

5. Katsumi Nakama (3 out of 4 patents)

6. Shuji Takahashi (2 out of 41 patents)

7. Yasuo Suzuki (2 out of 8 patents)

8. Masanobu Wakita (2 out of 3 patents)

9. Yoshio Iizuka (2 out of 3 patents)

10. Hiroyuki Kosuda (2 out of 5 patents)

11. Masato Andoh (2 out of 3 patents)

12. Hideaki Fukuizumi (2 out of 4 patents)

13. Tetsuro Shigei (2 out of 5 patents)

14. Yoshihiro Endo (2 out of 2 patents)

15. Teruaki Muramatsu (2 out of 2 patents)

29 patents: Sort by Forward Citations

1. 6139956 - Molding material and method for producing the same (2000-10-31),

2. 6054177 - Molding material and process for the production thereof (2000-04-25),

3. 5899118 - Steering wheel and method of manufacture (1999-05-04),

4. 5840347 - Apparatus for making a cylindrical product of fiber (1998-11-24),

5. 5685525 - Carbon fiber reinforced resin coil spring (1997-11-11),

6. 5585062 - Process for making a cylindrical product of fiber (1996-12-17),

7. 5514771 - Process for preparation of soluble ion-doped poly (alkyl-substituted (1996-05-07),

8. 5443859 - Carbon film and process for preparing the same (1995-08-22),

9. 5438105 - Polyamic acid composite, polyimide composite and processes for producing (1995-08-01),

10. 5371152 - Resin composition and process for producing the composition (1994-12-06),

11. 5352524 - Carbon film and process for preparing the same (1994-10-04),

12. 5286563 - Acrylic fiber strand suitable for use in carbon fiber production and (1994-02-15),

13. 5284702 - Low fuming phenolic resin prepreg and process for producing the same (1994-02-08),

14. 5231162 - Polyamic acid having three-dimensional network molecular structure, (1993-07-27),

15. 5227238 - Carbon fiber chopped strands and method of production thereof (1993-07-13),

Toho Rayon Co., Ltd. is a leading manufacturer of rayon fibers and textile products. With over 70 years of expertise, we offer a wide range of high-quality rayon products that cater to diverse industries and applications. Our commitment to innovation, sustainability, and customer satisfaction has propelled us to become a trusted name in the industry. Visit our website to explore our product offerings and learn more about our company.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

29 Patents

#83 in

#2,304 in Japan

#21,866 in the World

Toho Rayon Co., Ltd.

Forward Citations = 436

57 inventors:

Yasuhisa Nagata (7 out of 8 patents)

Hiroyasu Ogawa (6 out of 16 patents)

Hayashi Takahashi (3 out of 5 patents)

4. Yoshihiro Endoh (3 out of 5 patents)

5. Katsumi Nakama (3 out of 4 patents)

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