Location History:
- Kasuga, JP (1996)
- Saga, JP (2014)
- Yamanashi, JP (2014)
Company Filing History:
2 out of 16,453 
1 out of 27,375 
Years Active: 1996-2014
Title: Seiichi Yoshinaga: Innovator in Electronic Component Technology
Introduction
Seiichi Yoshinaga is a notable inventor based in Saga, Japan. He has made significant contributions to the field of electronic components, holding a total of 3 patents. His work focuses on enhancing the repairability and impact resistance of electronic component mounting structures.
Latest Patents
Yoshinaga's latest patents include an innovative electronic component mounting structure. This invention aims to provide a solution where repairability and impact resistance are effectively combined. The structure utilizes a plurality of solder balls positioned between an electronic component and a substrate. These solder balls are melted to create a bond, while a resin with a tensile elongation of 5 to 40% fills the gaps at the corners of the electronic component. This design allows for easy removal of the resin, enhancing repairability and reusability of the substrate. Additionally, the resin can expand upon impact, reinforcing the bond without breaking, thus providing excellent impact resistance.
Another significant patent is for an electronic element unit and reinforcing adhesive agent. This unit consists of an electronic element with multiple connecting terminals on its lower surface, paired with a circuit board featuring corresponding electrodes. The connection is made using solder bumps, and a thermosetting resin bond part partially bonds the electronic element to the circuit board. Notably, a metal powder with a lower melting point is included in the resin bond parts, facilitating easier removal of the electronic element during repair work.
Career Highlights
Throughout his career, Yoshinaga has worked with prominent companies such as Panasonic Corporation and Matsushita Electric Industrial Co., Ltd. His experience in these organizations has contributed to his expertise in electronic component technology.
Collaborations
Yoshinaga has collaborated with notable coworkers, including Yoshiyuki Wada and Tadahiko Sakai. Their collective efforts have further advanced the field of electronic components.
Conclusion
Seiichi Yoshinaga's innovative patents and career achievements highlight his significant impact on electronic component technology. His work continues to influence the industry, particularly in enhancing the repairability and durability of electronic devices.