Title: Hiroki Nagumo: Innovator in Power-Storage Technology Introduction Hiroki Nagumo is a prominent inventor based in Osaka, Japan. He is known for his contributions to the field of power-storage devices, particularly through his innovative work on polyolefin micro porous films. His expertise and dedication to advancing technology have made a significant impact in the industry. Latest Patents Hiroki Nagumo holds a patent for a polyolefin micro porous film, which serves as a separator film for power-storage devices. This invention features a polyolefin micro porous film that includes at least one of polyethylene and polypropylene. The film is characterized by a compressive elastic modulus ranging from 95 MPa to 150 MPa. Additionally, the surface roughness (Ra) of the film is measured for both the front and rear surfaces, with an average value (Ra(ave)) between 0.01 μm and 0.30 μm. This innovation enhances the performance and efficiency of power-storage devices. Career Highlights Hiroki Nagumo is currently employed at Ube Industries, Inc., where he continues to develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of power-storage solutions, making them more efficient and reliable. Collaborations Hiroki collaborates with talented colleagues, including Ryo Sakimoto and Kenji Kawabata. Their combined expertise fosters a creative environment that drives innovation and leads to groundbreaking advancements in their field. Conclusion Hiroki Nagumo's contributions to the field of power-storage technology exemplify his commitment to innovation. His patent for a polyolefin micro porous film showcases his ability to create solutions that enhance device performance. Through his work at Ube Industries, Inc. and collaborations with skilled coworkers, he continues to make a lasting impact in the industry.

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Hiroki Nagumo