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Unitika Ltd.

USPTO Granted Patents = 394

% Expired Patents = 9.4

CIPO Patents = 2

EPO Patents = 72

Trademarks = 7

Forward Citations = 4,258

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652 inventors (with patents filed for the assignee):

Yoshiaki Echigo (30 out of 38 patents)

Hiroshi Nakajima (23 out of 72 patents)

Shigemitsu Murase (18 out of 18 patents)

4. Kunihiko Takagi (14 out of 14 patents)

5. Kazue Ueda (13 out of 13 patents)

6. Michiaki Hagiwara (12 out of 13 patents)

7. Fumio Matsuoka (11 out of 11 patents)

8. Keiichi Asami (11 out of 11 patents)

9. Kenjin Shiba (10 out of 10 patents)

10. Isao Tomioka (10 out of 10 patents)

11. Hitoshi Kondo (10 out of 36 patents)

12. Tsuyoshi Masumoto (10 out of 49 patents)

13. Takayoshi Okuzu (9 out of 9 patents)

14. Akira Shigeta (9 out of 9 patents)

15. Minoru Kishida (9 out of 9 patents)

Core Competencies:

Polyester Film

Polyamide Resin

Gas Barrier Laminate

Activated Carbon

Water Purification

Flexible Polyamide

Polyarylate Resin

Deodorizing Material

Nonwoven Fabric

Light Diffusion Sheet

3D Printing

Flame-Retardant Resin

394 patents: Sort by Forward Citations

1. D1150351 - Filter for liquid purification (2026-09-29),

2. 12673879 - Water purifier cartridge, water purifier including the same, and water purifying member (2026-07-07),

3. 12528116 - Nickel nanowire and method for producing the same (2026-01-20),

4. 12503549 - Biaxially-stretched polyester resin film and manufacturing method for same (2025-12-23),

5. 12486368 - Polyester film and method for producing same (2025-12-02),

6. 12479195 - Gas barrier laminate and method for manufacturing same (2025-11-25),

7. 12428532 - Method for producing polyamide resin film (2025-09-30),

8. 12421387 - Polyester film and method for producing same (2025-09-23),

9. 12377400 - Water purification filter (2025-08-05),

10. 12264420 - Method for thermal molding of filament product (2025-04-01),

11. 12258284 - Activated carbon (2025-03-25),

12. 12234162 - Water purification cartridge (2025-02-25),

13. 12180347 - Laminated film and method for manufacturing same (2024-12-31),

14. 12180339 - Flexible polyamide (2024-12-31),

15. 12048914 - Deodorizing material, method for producing the same, deodorization method, and deodorizing sheet (2024-07-30),

Unitika Ltd., headquartered in Hyogo, Japan, specializes in the development and manufacturing of advanced polyester films and related materials. The company focuses on innovative solutions in various domains, including gas barrier laminates, activated carbon, and water purification technologies. Unitika's expertise extends to flexible polyamide and polyarylate resins, as well as deodorizing materials, positioning it as a key player in the materials science sector. Its commitment to research and development drives advancements in sustainable and high-performance products.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

394 Patents

#4 in Hyogo

#438 in Japan

#2,349 in the World

Unitika Ltd.

Forward Citations = 4,258

652 inventors:

Yoshiaki Echigo (30 out of 38 patents)

Hiroshi Nakajima (23 out of 72 patents)

Shigemitsu Murase (18 out of 18 patents)

4. Kunihiko Takagi (14 out of 14 patents)

5. Kazue Ueda (13 out of 13 patents)

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