Location History:
- Ootsu, JP (1990)
- Shiga, JP (2002 - 2004)
- Konan, JP (2012)
- Kyoto, JP (1993 - 2017)
Company Filing History:
6 out of 3,472 
1 out of 1 Years Active: 1990-2017
Title: Innovator Kuniyasu Shiro: Pioneering Advancements in Polishing Technology
Introduction
Kuniyasu Shiro, an inventive talent hailing from Shiga, Japan, has made significant contributions to the field of polishing technology. With a portfolio of six patents, Shiro's innovations have paved the way for advancements in materials and processes crucial to semiconductor and glass industries.
Latest Patents
One of Shiro's latest patents is the development of a polishing pad characterized by a compression elastic modulus between 0.17 MPa and 0.32 MPa. This is achieved through the crafting of a nonwoven fabric made from bundles of ultrafine fibers, boasting an average monofilament diameter ranging from 3.0 µm to 8.0 µm. The polishing pad's base is constructed by impregnating this nonwoven fabric with a polyurethane-based elastomer, comprising 20 to 50 mass % of the base. Additionally, the pad features a porous polyurethane layer with a specific opening diameter, designed to enhance the polishing surface.
Another innovation is the polishing apparatus designed to create a planar surface on materials such as glass, semiconductors, and integrated circuits. This apparatus ensures minimal scratching of the substrate surface while allowing for optical measurement of the polishing state. It incorporates a strategically placed through hole that connects the polishing surface to the rear surface, optimized for precise polishing performance.
Career Highlights
Throughout his career, Kuniyasu Shiro has worked with prominent companies, including Toray Industries, Inc. and Toray Coatex Co., Ltd. These experiences have enabled him to leverage his inventive capabilities in real-world applications, driving progress in polishing technologies.
Collaborations
Shiro's work has been enriched through collaborations with skilled professionals such as Shinichi Yamada and Tetsuo Oka. Their teamwork has fostered an environment of innovation and ensured the successful development and refinement of valuable patents.
Conclusion
Kuniyasu Shiro stands as a prominent figure in the realm of polishing technology. His inventive spirit and commitment to advancing the industry are reflected in his six patents, which mark significant milestones in material development and application efficiency. As polishing techniques continue to evolve, Shiro's contributions will undoubtedly leave a lasting impact on the technological landscape.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.