Takeo Takahashi

This inventor holds 51 USPTO granted patents and 16 published patent applications, plus 7 CIPO patents and 17 EPO patents, primarily in Downhole Tools. Top assignees: Kureha Corporation, Kabushiki Kaisha Toshiba, Fujitsu Corporation. Active years: 1990-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeo Takahashi. Retrieved from https://idiyas.com/inventor/takeo-takahashi

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

Calculating rank

USPTO Granted Patents = 51 (Patent Applications = 16)

% Patents Active = 66.7

CIPO Patents = 7

EPO Patents = 17 (Patent Applications = 13)

Average Co-Inventor Count = 3.0

ph-index = 8

Forward Citations = 200(Granted Patents)

Forward Citations (Not Self Cited) = 189(Dec 10, 2025)

Location History:

Hachioji, JP (1990)
Iwate-ken, JP (2000)
Ibaraki, JP (2007 - 2009)
Sannohe, JP (2009)
Ibaraki-Ken, JP (2008 - 2010)
Nagano, JP (2011 - 2013)
Kanagawa, JP (2016)
Tokyo, JP (1999 - 2020)
Yokohama, JP (2007 - 2021)

Company Filing History:

Kabushiki Kaisha Toshiba

Taiyo Yuden Co., Ltd.

patents

5. 2 out of 158

Fujitsu Media Devices Limited

patents

6. 2 out of 4,980

Oki Electric Industry Co., Ltd.

patents

7. 2 out of 707

Oki Semiconductor Co., Ltd.

patents

8. 2 out of 5,729

Olympus Optical Company, Ltd.

patents

9. 1 out of 134

Kabushiki Kaisha Sato

patents

10. 1 out of 336

Toshiba Energy Systems & Solutions Corporation

patents

where one patent can have more than one assignee

Years Active: 1990-2021

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Areas of Expertise:

Degradable Rubber Member

Downhole Tool

Hydrocarbon Recovery

Well Drilling

Thermal Insulation

Turbine Rotor

Carbon Dioxide Recovery

Electronic Device

Vinylidene Fluoride

Polyglycolic Acid

Semiconductor Memory

Water Filtration

51 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11021993 - Thermal insulation coating member, axial flow turbine, and method for producing thermal insulation coating member (2021-06-01),

2. 10829614 - Composition, composition for downhole tools, degradable rubber member for downhole, downhole tool, and method for well drilling (2020-11-10),

3. 10815362 - Composition, composition for downhole tools, degradable rubber member for downhole, downhole tool, and method for well drilling (2020-10-27),

4. 10738561 - Stock shape for downhole tool component, downhole tool component, and downhole tool (2020-08-11),

5. 10619084 - Plug for well drilling provided with diametrically expandable annular rubber member formed from degradable rubber material (2020-04-14),

6. 10414851 - Rubber member for downhole tools, downhole tool, and method for recovering hydrocarbon resource (2019-09-17),

7. 10280699 - Degradable rubber member for downhole tools, degradable seal member, degradable protecting member, downhole tool, and method for well drilling (2019-05-07),

8. 10208559 - Diameter-expandable annular degradable seal member for downhole tool, plug for well drilling, and method for well drilling (2019-02-19),

9. 10072476 - Poly-L-lactic acid solid-state extrusion molded article, method for producing the same, and use applications of the same (2018-09-11),

10. 10030465 - Solidification- and extrusion-molded article of polyglycolic acid and method for manufacturing same (2018-07-24),

11. 9926764 - Molded product having effective thickness of 1 mm or more and containing aliphatic polyester resin, and downhole tool member for hydrocarbon resource recovery (2018-03-27),

12. 9914871 - Ball sealer for hydrocarbon resource recovery, method for manufacturing same, and method for treating borehole using same (2018-03-13),

13. 9902897 - Degradable fiber for use in well treatment fluid, method for manufacturing same, and well treatment method (2018-02-27),

14. 9879500 - Well treatment method by disintegrating elastic material by contacting seal member for downhole tools comprising elastic material with well treatment fluid (2018-01-30),

15. 9714551 - Plug for well drilling process provided with mandrel formed from degradable material (2017-07-25),

Title: Takeo Takahashi: Innovator in Downhole Tools and Rubber Technology

Introduction

Takeo Takahashi is a prominent inventor located in Tokyo, Japan, known for his significant contributions to downhole tools and materials science. With a remarkable portfolio of 30 patents, Takahashi's work emphasizes innovation in reducing costs and enhancing efficiency in the well drilling industry.

Latest Patents

Takahashi's latest patents encompass a range of critical developments including the composition for downhole tools, a degradable rubber member for downhole applications, and methodologies for improved well drilling processes. His work highlights a composition utilizing degradable rubber in conjunction with a degradation accelerator. This formulation not only aids in cost reduction but also streamlines the drilling process while enhancing production efficiency. Notably, the composition involves 0.1 to 20 parts by mass of a specific compound, represented by a general formula, per 100 parts by mass of the degradable rubber. This innovation plays a pivotal role in advancing the functionality of downhole tools.

Career Highlights

Takahashi has had an esteemed career, working with reputable companies such as Kureha Corporation and Olympus Optical Company, Ltd. His experiences in these organizations have allowed him to develop and refine his expertise in patents related to material sciences and engineering.

Collaborations

Throughout his career, Takahashi has collaborated with several dynamic professionals, including Masayuki Okura and Yasuhiro Tada. These partnerships have fostered a productive environment for innovation and have contributed significantly to the development of groundbreaking technologies in the industry.

Conclusion

Takeo Takahashi’s contributions to the field of downhole tools and degradable materials illustrate a profound commitment to innovation and efficiency. His extensive patent portfolio serves as a testament to his expertise and dedication to advancing technology in well drilling processes. As the industry evolves, Takahashi's inventions will undoubtedly continue to play a crucial role in driving improvements and fostering sustainable practices within the sector.

Profile summary based on public USPTO records.