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Sumitomo Electric Fine Polymer, Inc.

USPTO Granted Patents = 73

% Expired Patents = 9.6

CIPO Patents = 1

EPO Patents = 24

Forward Citations = 90

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93 inventors (with patents filed for the assignee):

Fumihiro Hayashi (14 out of 25 patents)

Makoto Nakabayashi (13 out of 32 patents)

Satoshi Yamasaki (11 out of 17 patents)

4. Shinya Nishikawa (10 out of 54 patents)

5. Jun Sugawara (10 out of 24 patents)

6. Shingo Nakajima (10 out of 12 patents)

7. Yoshimasa Suzuki (10 out of 10 patents)

8. Yasutaka Emoto (9 out of 9 patents)

9. Kazuaki Ikeda (8 out of 9 patents)

10. Atsushi Uno (8 out of 13 patents)

11. Hong-Phuc Nguyen (6 out of 6 patents)

12. Yasuhiko Muroya (5 out of 5 patents)

13. Yasuhiro Fukumoto (5 out of 7 patents)

14. Ryota Fukumoto (4 out of 9 patents)

15. Hiroshi Hayami (4 out of 30 patents)

Core Competencies:

Heat-Shrinkable Tube

Hollow Fiber Membrane

Polytetrafluoroethylene

Pressure-Sensitive Adhesive

Flame-Retardant Polymer

Optical Lens

Filtration Module

Polyimide Tube

Electrical Wire Bundle

Resin Composition

Microporous Membrane

High-Frequency Circuit

73 patents: Sort by Forward Citations

1. 12685971 - Aeration module (2026-07-21),

2. 12362552 - Heat-shrinkable tube, heat-shrinkable sheet, connector, and method for manufacturing heat-shrinkable tube (2025-07-15),

3. 12259052 - Valve member (2025-03-25),

4. 12214316 - Method for manufacturing hollow fiber membrane module, and hollow fiber membrane module (2025-02-04),

5. 12076693 - Hollow-fiber membrane module (2024-09-03),

6. 11801480 - Hollow-fiber membrane and hollow-fiber membrane module (2023-10-31),

7. 11648758 - Formed article (2023-05-16),

8. 11552356 - Electricity storage device member, method of manufacturing the same, and electricity storage device (2023-01-10),

9. 11375615 - Substrate for printed circuit board, printed circuit board, and method for producing substrate for printed circuit board (2022-06-28),

10. 11339299 - Method of making oil repellent sheet material and gas sensor (2022-05-24),

11. 11326034 - Method for manufacturing polytetrafluoroethylene formed product, and polytetrafluoroethylene formed product (2022-05-10),

12. 10858487 - Polytetrafluoroethylene formed product, and manufacturing method therefor (2020-12-08),

13. 10814286 - Semipermeable membrane and method for producing semipermeable membrane (2020-10-27),

14. 10717053 - Method for producing laminated complex, and laminated complex (2020-07-21),

15. 10439384 - Heat-recoverable article, method for manufacturing heat-recoverable article, wire splice, and wire harness (2019-10-08),

Company Overview

Sumitomo Electric Fine Polymer, Inc., based in Osaka, Japan, specializes in the development and manufacturing of advanced heat-shrinkable materials. The company focuses on a range of core technologies, including heat-shrinkable tubes, hollow fiber membranes, and polytetrafluoroethylene products. Their expertise extends to pressure-sensitive adhesives, flame-retardant polymers, optical lenses, filtration modules, and polyimide tubes, catering to various industries with innovative solutions that enhance performance and safety.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

73 Patents

#149 in Osaka

#1,379 in Japan

#10,263 in the World

Sumitomo Electric Fine Polymer, Inc.

Forward Citations = 90

93 inventors:

Fumihiro Hayashi (14 out of 25 patents)

Makoto Nakabayashi (13 out of 32 patents)

Satoshi Yamasaki (11 out of 17 patents)

4. Shinya Nishikawa (10 out of 54 patents)

5. Jun Sugawara (10 out of 24 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Electric Fine Polymer, Inc.. Retrieved from https://idiyas.com/company/sumitomo-electric-fine-polymer

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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