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For the Inventor, By the Inventor

Osaka, Japan

Kae Fujiwara

This inventor holds 6 USPTO granted patents and 19 published patent applications. Top assignees: Daikin Industries, Ltd., Mitsui Chemicals, Inc.. Active years: 2025-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kae Fujiwara. Retrieved from https://idiyas.com/inventor/kae-fujiwara-c9ugbhm4

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

USPTO Granted Patents = 6 

% Patents Active = 66.7

Average Co-Inventor Count = 4.8

ph-index = 1


Company Filing History:

goldMedal6 out of 4,495 
 
Daikin Industries, Ltd.
 patents
silverMedal1 out of 1,817 
 
Mitsui Chemicals, Inc.
 patents
where one patent can have more than one assignee

Years Active: 2025-2026

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6 patents (USPTO):Explore Patents
1. 12738537 - Composite, polymer electrolyte, electrochemical device, polymer-based solid-state battery, and actuator (2026-09-15),
2. 12683191 - Nonaqueous electrolyte solution for lithium secondary batteries, lithium secondary battery precursor, lithium secondary battery, and method for manufacturing lithium secondary battery (2026-07-14),
3. 12512512 - Polymer electrolyte including amorphous fluorine-containing elastomer and alkali metal salt, electrochemical device, polymer-based solid-state battery, and actuator including the same (2025-12-30),
4. 12476254 - Binder for solid-state secondary battery, slurry for solid-state secondary battery, method for forming layer for solid-state secondary battery and solid-state secondary battery (2025-11-18),
5. 12424633 - Binder, slurry for solid-state battery, electrode for solid-state battery, and secondary solid-state battery (2025-09-23),
6. 12212004 - Binder, slurry for solid-state battery, electrode for solid-state battery, and secondary solid-state battery (2025-01-28),

Title: Kae Fujiwara: Innovator in Solid-State Battery Technology

Introduction

Kae Fujiwara is a prominent inventor based in Osaka, Japan, known for her significant contributions to the field of solid-state battery technology. With a total of 6 patents, she has been instrumental in advancing the efficiency and safety of energy storage solutions.

Latest Patents

Her latest patents include innovative developments such as a binder for solid-state secondary batteries, a slurry for solid-state secondary batteries, and a method for forming layers for solid-state secondary batteries. One of her notable inventions is an oxide-based solid-state secondary battery that utilizes a binder made from a fluorine-containing polymer. This polymer includes a vinylidene fluoride unit and a fluorinated monomer unit, which enhances the battery's performance. Additionally, she has developed a binder and slurry suitable for producing electrodes in sulfide-based solid-state batteries, which contain sulfide-based solid electrolyte particles.

Career Highlights

Kae Fujiwara is currently employed at Daikin Industries, Ltd., where she continues to push the boundaries of battery technology. Her work focuses on creating more efficient and safer energy storage systems, which are crucial for the advancement of electric vehicles and renewable energy applications.

Collaborations

She collaborates with talented colleagues such as Takaya Yamada and Junpei Terada, contributing to a dynamic research environment that fosters innovation.

Conclusion

Kae Fujiwara's work in solid-state battery technology exemplifies her commitment to innovation and excellence. Her patents and ongoing research are paving the way for the future of energy storage solutions.

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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