Location History:
- Kanagawa, JP (2005)
- Minato-ku, JP (2005)
- Tokyo, JP (1998 - 2006)
Company Filing History:
3 out of 35,734 
2 out of 2,467 
1 out of 6,896 Years Active: 1998-2006
Title: Inventor Keiji Hirano: Innovations in Semiconductor and Stripping Agent Technologies
Introduction
Keiji Hirano is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the fields of semiconductor technology and chemical compositions. With a total of six patents, Hirano has shown a remarkable ability to innovate and solve complex industrial challenges through his inventive spirit.
Latest Patents
Hirano's latest patents include innovative solutions that push the boundaries of technology. One notable patent is for a stripping agent composition and method of stripping, which comprises an anticorrosive agent, a stripping agent, and a solvent. This composition uniquely features a heterocyclic compound with a nitrogen atom-containing six-membered ring as the anticorrosive agent. Another significant patent focuses on the preparation process for semiconductor devices. This invention addresses the issue of effectively removing residues generated after selectively eliminating a low-dielectric-constant film, such as SiOC, without damaging the insulating or metal films. Specifically, it utilizes a fluoride-free weak alkaline amine stripper and suggests rinsing the wafer with isopropyl alcohol before drying it without pure water.
Career Highlights
Throughout his career, Keiji Hirano has made substantial impacts while working with noteworthy organizations. He has held positions at NEC Corporation and NEC Electronics Corporation, where he collaborated with other skilled professionals and contributed to numerous innovative projects. His work has not only advanced the technology of his companies but has also played a crucial role in enhancing the semiconductor industry.
Collaborations
During his professional journey, Hirano has collaborated with esteemed colleagues, including Hidemitsu Aoki and Tatsuya Koito. These collaborations have fostered an environment of creativity and innovation, leading to the development of groundbreaking patents and products in the field.
Conclusion
Keiji Hirano's contributions as an inventor highlight his pivotal role in advancing semiconductor technologies and chemical compositions. His patents reflect his commitment to innovation and problem-solving, offering essential solutions to contemporary challenges in the industry. As a leading figure in his field, Hirano's work will continue to inspire and influence future developments in technology.