Location History:
- Dazaifu, JP (1999 - 2000)
- Onga-gun, JP (2007 - 2008)
- Fukuoka, JP (2009)
Company Filing History:
4 out of 27,375 
1 out of 16,453 
Years Active: 1999-2009
Title: Kouji Nakashima: Innovator in Flexible Printed Circuit Board Technology
Introduction
Kouji Nakashima is a prominent inventor based in Onga-gun, Japan. He has made significant contributions to the field of flexible printed circuit boards (FPCs) and holds a total of 5 patents. His innovative work has enhanced the reliability and efficiency of electronic devices.
Latest Patents
One of Nakashima's latest patents is a manufacturing method for flexible printed wiring boards. This invention includes an FPC that comprises an insulating layer, wiring layers laminated above and below the insulating layer, and a layer connection for connecting the wiring layers electrically. The layer connection features a cone-shaped conductor press-fit hole that extends through the insulating layer and the upper and lower wiring layers. This design allows for a larger contact area between the wiring layers and the conductor, thereby improving connection reliability.
Another notable patent is for a multi-layer printed circuit board and the method for fabricating it. This invention aims to provide a high-bonding reliability multi-layer flexible printed circuit board that is ideal for micropatterning circuit layers. The design includes a conductor filled in the through-holes of the insulating layer, which electrically interconnects the circuit layers on both faces of the insulating layer. The conductor contains a copper-core solder ball, enhancing the overall performance of the device.
Career Highlights
Kouji Nakashima has worked with several esteemed companies, including Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of electronics.
Collaborations
Throughout his career, Nakashima has collaborated with notable colleagues such as Toyokazu Yoshino and Keita Ihara. These partnerships have contributed to the advancement of technology in flexible printed circuit boards.
Conclusion
Kouji Nakashima's contributions to the field of flexible printed circuit boards have made a lasting impact on the electronics industry. His innovative patents and collaborations highlight his dedication to enhancing technology and improving device reliability.