Yoshihisa Muranushi

Title: Innovations by Yoshihisa Muranushi

Introduction

Yoshihisa Muranushi is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of materials science, particularly in the development of etchants for aluminum alloys. With a total of two patents to his name, Muranushi's work has implications for improving the adhesion of metal layers to aluminum substrates.

Latest Patents

Muranushi's latest patents include an etchant for aluminum alloys that involves an iron immersion composition. This composition comprises a compound with divalent or trivalent iron ions, a compound with fluoride ions, and a compound with acid hydrogen ions. The process he developed treats aluminum substrates to enhance the adhesion of metal layers by creating an iron immersion coating. This coating is then treated with an etchant to produce a microporous surface on the substrate. Another patent focuses on a tin immersion composition that includes divalent tin ions, fluoride ions, and acid hydrogen ions. This process is designed for aluminum-copper or aluminum-silicon alloys, improving the adhesion of metal layers through a similar coating and etching process.

Career Highlights

Throughout his career, Muranushi has worked with prominent companies such as Atotech USA, Inc. and Atotech Deutschland GmbH. His experience in these organizations has allowed him to refine his expertise in materials treatment and etching processes.

Collaborations

Muranushi has collaborated with notable colleagues, including Hideki Matsumoto and Masahiro Inuzuka. These partnerships have contributed to the advancement of his research and innovations in the field.

Conclusion

Yoshihisa Muranushi's contributions to the development of etchants for aluminum alloys demonstrate his innovative spirit and commitment to enhancing material adhesion. His patents reflect a deep understanding of chemical processes and their applications in industry.