Company Filing History:
Years Active: 2000-2001
Title: The Innovative Contributions of Yoshifumi Ishitani
Introduction
Yoshifumi Ishitani is a noteworthy inventor based in Gifu, Japan, recognized for his significant contributions to the field of printed circuit boards. With three patents to his name, Ishitani has made strides in enhancing the functionality and durability of multilayer printed circuit boards.
Latest Patents
Ishitani’s latest patents include groundbreaking developments in multilayer printed circuit boards and methods of producing these intricate components. His inventions aim to provide a multilayer printed circuit board that boasts excellent resolution, interlaminar insulation properties, and resistance to thermal shock. This is achieved without the formation of uneven surfaces or a reduction in peel strength, even with a thinner resin insulating layer.
The proposed multilayer printed circuit board consists of an upper conductor circuit layer and a lower conductor circuit layer, separated by a resin insulating layer that electrically insulates both layers. This resin insulating layer is a composite made from a heat-resistant resin that is hardly soluble in acid or an oxidizing agent for the lower layer, complemented by an adhesive layer for electroless plating in the upper layer. Additionally, the technology encompasses filling any concave portions created between the conductor insulating circuits of the lower layer to ensure a level surface with the conductor circuit.
Career Highlights
Ishitani is employed at Ibiden Company Limited, a company that prides itself on its advancements in electrical components and materials. His work exemplifies the company's commitment to innovation and quality, particularly in the realm of printed circuit technology.
Collaborations
Throughout his career, Ishitani has collaborated with fellow inventors Toshihiko Yasue and Yasuji Hiramatsu. Their joint efforts continue to push the boundaries of what is possible in the field of electronics, contributing to the development of advanced technologies that meet the growing demands of the industry.
Conclusion
In conclusion, Yoshifumi Ishitani stands out as a dedicated inventor whose work on multilayer printed circuit boards significantly advances the field of electronics. His innovations are not only essential for improving current technologies but also pave the way for future developments in the industry.