Toshiaki Chuma

Title: Toshiaki Chuma: Innovator in Electronic Component Packaging

Introduction

Toshiaki Chuma is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of electronic component packaging, holding a total of 3 patents. His innovative work has advanced the technology used in electronic components, making them more efficient and reliable.

Latest Patents

Chuma's latest patents include an electronic component package and a method for producing such packages. This invention features a circuit board with an electrically-conductive conductor post buried in a base member. The solder layer at the front end of the conductor post is exposed from the surface of the base member. An electrode pad with a metal layer is mounted on the main surface of the electronic component. The adhesive layer contains a flux activating compound, bonding the surface of the base member and the main surface of the electronic component. This allows for metal bonding between the metal layer and the solder layer.

Another notable patent is related to a joint structure, joining method, wiring board, and method for producing the same. This joint structure includes a conductive member and an electrode member, both primarily made of copper. The joint portion is formed by fusion welding these members with a brazing material that contains tin as a major component and substantially no copper. The innovative design ensures that the amount of copper atoms in the central part of the joint portion is higher than that in the outer circumference.

Career Highlights

Toshiaki Chuma is currently employed at Sumitomo Bakelite Company Limited, where he continues to develop cutting-edge technologies in electronic components. His work has been instrumental in enhancing the performance and durability of electronic devices.

Collaborations

Chuma has collaborated with notable coworkers, including Masayoshi Kondo and Masaaki Kato. Their combined expertise has contributed to the successful development of innovative solutions in the field.

Conclusion

Toshiaki Chuma's contributions to electronic component packaging demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of technology and a drive to improve electronic components for various applications.