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Diafoil Hoechst Company, Limited

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USPTO Granted Patents = 38

Trademarks = 1

Forward Citations = 280

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41 inventors (with patents filed for the assignee):

Narihiro Masuda (5 out of 10 patents)

Kazuo Endo (5 out of 17 patents)

Seiji Sakamoto (5 out of 18 patents)

4. Masashi Inagaki (5 out of 8 patents)

5. Yoshinori Sato (5 out of 10 patents)

6. Shinichi Kinoshita (4 out of 69 patents)

7. Shin-ichi Kinoshita (4 out of 7 patents)

8. Chikakazu Kawaguchi (4 out of 9 patents)

9. Jun Takahashi (3 out of 28 patents)

10. Yoshihiko Ito (3 out of 7 patents)

11. Yuko Watanuki (3 out of 3 patents)

12. Megumi Komiyama (3 out of 4 patents)

13. Shigeo Utsumi (3 out of 30 patents)

14. Takashi Harada (2 out of 34 patents)

15. Hidemi Yoshida (2 out of 5 patents)

Core Competencies:

Polyester Film

Thermal Transfer

Magnetic Recording

Capacitor

Optical Tape

Laminated Film

Biaxially Oriented

Polyethylene Naphthalate

Sublimation

High Density

Dielectric

Image-Forming

38 patents: Sort by Forward Citations

1. 5863641 - Polyester film for sublimation type thermal transfer printing (1999-01-26),

2. 5833905 - Process for producing polyester composition (1998-11-10),

3. 5824394 - Biaxially oriented laminated polyester film (1998-10-20),

4. 5738926 - Metallized polyester film capacitor (1998-04-14),

5. 5670236 - Biaxially oriented polyester film for magnetic recording medium (1997-09-23),

6. 5648159 - Dry resist (1997-07-15),

7. 5612115 - Metal-deposited polyester film capacitor (1997-03-18),

8. 5607897 - Polyester film for sublimation-type thermosensitive transfer recording (1997-03-04),

9. 5540974 - Metallized polyester film capacitor (1996-07-30),

10. 5532049 - Magnetic recording medium having a calendered polyester layer with a (1996-07-02),

11. 5527594 - Optical tape (1996-06-18),

12. 5514462 - Polyester film comprising a mixture of polyesters for highly heat (1996-05-07),

13. 5510192 - Polyethylene naphthalate multilayered film for high density magnetic (1996-04-23),

14. 5494727 - Metallized polyester film capacitor (1996-02-27),

15. 5478644 - Laminated polyester film (1995-12-26),

Company Overview

Diafoil Hoechst Company, Limited, based in Tokyo, specializes in advanced materials and innovative solutions for various industries. The company focuses on the development and manufacturing of high-performance products, particularly in the fields of specialty chemicals and polymer technology. With a commitment to research and development, Diafoil aims to enhance product performance and sustainability, catering to diverse market needs both domestically and internationally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

38 Patents

#950 in Tokyo

#2,028 in Japan

#17,876 in the World

Diafoil Hoechst Company, Limited

Forward Citations = 280

41 inventors:

Narihiro Masuda (5 out of 10 patents)

Kazuo Endo (5 out of 17 patents)

Seiji Sakamoto (5 out of 18 patents)

4. Masashi Inagaki (5 out of 8 patents)

5. Yoshinori Sato (5 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Diafoil Hoechst Company, Limited. Retrieved from https://idiyas.com/company/diafoil-hoechst-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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