Takashi Sumida

Title: Takashi Sumida: Innovator in Battery Technology and Recording Media

Introduction

Takashi Sumida is a prominent inventor based in Shiga-ken, Japan. He has made significant contributions to the fields of battery technology and recording media, holding a total of 9 patents. His innovative designs have paved the way for advancements in energy storage and media handling.

Latest Patents

One of Sumida's latest patents is a sealed battery that features a columnar battery case encapsulating a chargeable/dischargeable electrode assembly and electrolyte. This design includes a vent that opens when internal pressure exceeds a threshold, ensuring safety and reliability. Additionally, the battery incorporates a cover that prevents resin from obstructing the vent and a temperature protection device that blocks electric current when temperatures exceed a certain limit. This innovative design enhances the safety and efficiency of battery technology.

Another notable patent is a recording medium cartridge that utilizes a twin-coiled torsional spring-biased mechanism. This cartridge features a housing with a medium chamber and a slide shutter that can be opened or closed. The biasing member, designed as a twin-coiled torsional spring, ensures that the slide shutter remains securely closed when not in use. This invention improves the functionality and reliability of recording media cartridges.

Career Highlights

Throughout his career, Takashi Sumida has worked with esteemed companies such as Hitachi Maxell, Limited and Hitachi, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to the advancement of technology in his field.

Collaborations

Sumida has collaborated with notable colleagues, including Nobutaka Miyazaki and Takao Ketori. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Takashi Sumida's contributions to battery technology and recording media have established him as a key figure in innovation. His patents reflect a commitment to enhancing safety and efficiency in technology. His work continues to influence the industry and inspire future innovations.