Fumitaka Watanabe

This inventor holds 8 USPTO granted patents and 2 published patent applications and 2 EPO patents. Top assignee: Toray Industries, Inc.. Active years: 2021-2025.

USPTO Granted Patents = 8 (Patent Applications = 2)

% Patents Active = 100.0

EPO Patents = 2 (Patent Applications = 5)

Average Co-Inventor Count = 3.1

ph-index = 1

Company Filing History:

8 out of 3,570

Toray Industries, Inc.

patents

Years Active: 2021-2025

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12241181 - Carbon fiber bundle and production method thereof (2025-03-04),

2. 12142768 - Method for producing gas diffusion electrode substrate (2024-11-12),

3. 11932971 - Method of producing precursor fiber for carbon fiber and carbon fiber (2024-03-19),

4. 11757103 - Gas diffusion electrode medium and method for producing the same, gas diffusion electrode, membrane electrode assembly, and polymer electrolyte fuel cell (2023-09-12),

5. 11710831 - Gas diffusion electrode base material and production method therefor, and solid polymer fuel cell (2023-07-25),

6. 11621426 - Micro-porous layer and manufacturing method therefor, gas diffusion electrode substrate, and fuel battery (2023-04-04),

7. 11302951 - Electrode and redox flow battery (2022-04-12),

8. 10950867 - Electrode, redox flow battery, and method for producing electrode (2021-03-16),

Title: Fumitaka Watanabe: Innovator in Carbon Fiber Technology

Introduction

Fumitaka Watanabe is a prominent inventor based in Otsu, Japan. He has made significant contributions to the field of carbon fiber technology, holding a total of 8 patents. His innovative approaches have led to advancements in materials that are crucial for various industrial applications.

Latest Patents

Watanabe's latest patents include a method for producing a carbon fiber bundle and a method for producing a gas diffusion electrode substrate. The carbon fiber bundle production method focuses on suppressing the penetration of process oil agents into the fiber surface layer, thereby minimizing adhesion between fibers and the generation of surface voids. This method results in a carbon fiber bundle characterized by a crystallite size of 3.0 nm or less and a specific Si/C ratio profile. The gas diffusion electrode substrate production method aims to create a substrate with high conductivity and chemical resistance while keeping production costs low. This method involves a series of steps, including binder resin impregnation, coating with a microporous layer, and heat treatment.

Career Highlights

Watanabe is currently employed at Toray Industries, Inc., a leading company in advanced materials. His work at Toray has allowed him to focus on innovative solutions that enhance the performance of carbon fiber products. His contributions have been instrumental in advancing the company's technological capabilities.

Collaborations

Watanabe has collaborated with notable colleagues such as Masamichi Utsunomiya and Kentaro Kajiwara. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies in the field of materials science.

Conclusion

Fumitaka Watanabe's work in carbon fiber technology exemplifies the impact of innovation on industrial applications. His patents and contributions continue to shape the future of materials engineering.