Tano-gun, Japan

Yumiko Takashima

This inventor holds 5 USPTO granted patents. Top assignees: Sharp Corporation, Dai-Ichi Kogyo Seiyaku Co., Ltd., Sharp Kabushiki Kaisha Corporation. Active years: 2007-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yumiko Takashima. Retrieved from https://idiyas.com/inventor/yumiko-takashima

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


% Patents Active = 60.0

Average Co-Inventor Count = 8.2

ph-index = 1

Forward Citations = 9(Granted Patents)


Company Filing History:


Years Active: 2007-2009

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5 patents (USPTO):Explore Patents

Title: Yumiko Takashima: Innovator in Lithium Polymer Battery Technology

Introduction

Yumiko Takashima is a prominent inventor based in Tano-gun, Japan. She has made significant contributions to the field of battery technology, particularly in the development of lithium polymer secondary batteries. With a total of 5 patents to her name, her work has had a substantial impact on energy storage solutions.

Latest Patents

Among her latest patents is a lithium polymer secondary battery that features a unique method for manufacturing. This innovative battery comprises a polymer electrolyte layer arranged between a negative and a positive electrode. The cell undergoes a heat treatment at a temperature of 40 to 60°C after assembly, which effectively reduces the adverse effects of residual monomers and initiators on the battery's performance. The polymer electrolyte is formed through cross-linking polymerization of a precursor monomer for an ion-conducting polymer in a non-aqueous electrolyte, ensuring enhanced efficiency and reliability.

Career Highlights

Yumiko has worked with notable companies such as Sharp Corporation and Dai-ichi Kogyo Seiyaku Co., Ltd. Her experience in these organizations has allowed her to refine her skills and contribute to groundbreaking advancements in battery technology.

Collaborations

Throughout her career, Yumiko has collaborated with esteemed colleagues, including Tsutomu Sada and Kazunari Takeda. These partnerships have fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies.

Conclusion

Yumiko Takashima stands out as a leading figure in the field of lithium polymer battery technology. Her innovative patents and collaborations have significantly advanced energy storage solutions, making her a key player in the industry.

Profile summary based on public USPTO records.
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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