Location History:
- Tokyo, JP (2005)
- Hitachi, JP (2012)
Company Filing History:
Years Active: 2005-2012
Title: The Innovations of Nagayoshi Matsuo
Introduction
Nagayoshi Matsuo is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of advanced wiring technologies. With a total of 2 patents, Matsuo's work has had a notable impact on the industry.
Latest Patents
Matsuo's latest patents include a multilayer wiring board and a method of making the same. This multilayer wiring board features a core insulating layer with a first conductive wiring, a first insulating layer with a softening temperature lower than the core insulating layer, and a second insulating layer formed on the core insulating layer through the first insulating layer. The second insulating layer includes a second conductive wiring that is electrically connected to the first conductive wiring, with a softening temperature higher than the first insulating layer. The first insulating layer is primarily composed of a liquid crystal polymer, while the core insulating layer and the second insulating layer are mainly made of polyimide resin or bismaleimide triazine resin. The conductive wiring is connected through a conductive via that penetrates the first and second insulating layers.
Another significant patent by Matsuo is related to TAB tape, which consists of a tape substrate made of insulating material. This TAB tape features a first wiring pattern of conductive material on one surface and a second wiring pattern on the other surface. It includes a conduction part that facilitates electrical conduction between the two wiring patterns, along with a stiffener adhered to the tape substrate. The second wiring pattern incorporates insulating material filled in groove regions where no wiring pattern is formed.
Career Highlights
Matsuo is currently employed at Hitachi Cable, Inc., where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of wiring systems used in various electronic devices.
Collaborations
Matsuo has collaborated with notable colleagues such as Shigeo Nishino and Hiroyuki Takasaka, contributing to a dynamic and innovative work environment.
Conclusion
Nagayoshi Matsuo's contributions to the field of electrical engineering through his patents and work at Hitachi Cable, Inc. highlight his role as a key innovator in the industry. His advancements in multilayer wiring technologies and TAB tape design continue to influence modern electronic applications.