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For the Inventor, By the Inventor

Otsu, Japan

Tetsuo Okuyama

USPTO Granted Patents = 13 

 

Average Co-Inventor Count = 4.6

ph-index = 2

Forward Citations = 11(Granted Patents)


Company Filing History:

goldMedal13 out of 395 
 
Toyobo Co., Ltd.
 patents

Years Active: 2015-2025

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13 patents (USPTO):Explore Patents
1. 12489044 - Method for producing layered body, layered body, and multilayered body (2025-12-02),
2. 12479194 - Laminate (2025-11-25),
3. 12391813 - Layered body including inorganic substrate and polyamic acid cured product (2025-08-19),
4. 12172409 - Laminate of inorganic substrate/polymer film layer with attached protective film, laminate stack, laminate storage method, and laminate transport method (2024-12-24),
5. 12115755 - Laminate of polyimide film and inorganic substrate (2024-10-15),
6. 11833795 - Multilayer body and method for producing flexible device (2023-12-05),
7. 11655118 - Film roll and film bundle (2023-05-23),
8. 11267216 - Polymer film laminated substrate and method for producing flexible electronic device (2022-03-08),
9. 11065853 - Polyimide film layered body (2021-07-20),
10. 10857762 - Polymer film coated with a layer of silane coupling agent (2020-12-08),
11. 9895868 - Method for producing layered product, layered product, method for producing layered product with device using said layered product, and layered product with device (2018-02-20),
12. 9604391 - Laminate, production method for same, and method of creating device structure using laminate (2017-03-28),
13. 8980409 - Laminate, method for producing same, and method for producing device structure using same (2015-03-17),

Title: Tetsuo Okuyama: Innovator in Layered Body Technologies

Introduction

Tetsuo Okuyama is a prominent inventor based in Otsu, Japan, known for his significant contributions to the field of materials science. With a total of 11 patents to his name, Okuyama has made remarkable advancements in layered body technologies, particularly involving inorganic substrates and polymer films.

Latest Patents

One of Okuyama's latest patents is for a layered body that includes an inorganic substrate and a polyamic acid heat-cured product. This innovation allows for easy release from the inorganic substrate after being heated at 250° C. The layered body is characterized by a weight average molecular weight of 30,000 or greater for the polyamic acid, and a peel strength of 0.3 N/cm or weaker between the polyamic acid heat-cured product layer and the inorganic substrate after heating. Another notable patent involves an inorganic substrate/polymer film laminate with an attached protective film. This laminate is designed for easy individual removal even when stored in a stacked state for an extended period. The first laminate includes an inorganic substrate, a polymer film layer, and a first protective film, with specific surface roughness characteristics.

Career Highlights

Okuyama has built a successful career at Toyobo Co., Ltd., where he has been instrumental in developing innovative materials and technologies. His work has not only advanced the field but has also contributed to the company's reputation as a leader in materials science.

Collaborations

Throughout his career, Okuyama has collaborated with notable colleagues, including Naoki Watanabe and Toshiyuki Tsuchiya. These collaborations have fostered a creative environment that has led to numerous advancements in their respective fields.

Conclusion

Tetsuo Okuyama's contributions to layered body technologies exemplify the impact of innovation in materials science. His patents reflect a commitment to advancing technology and improving product performance.

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