Location History:
- Nagano, JP (2003 - 2005)
- Shiojiri, JP (2011 - 2013)
Company Filing History:
Years Active: 2003-2013
Title: **Innovations by Yoshitomo Shimazu: Pioneering Polishing Compositions**
Introduction
Yoshitomo Shimazu, an accomplished inventor based in Nagano, Japan, holds an impressive portfolio of six patents. His work primarily focuses on developing advanced polishing compositions that enhance the efficiency of semiconductor manufacturing processes.
Latest Patents
Among his latest contributions to the field are two significant patents that revolutionize the polishing methods used in electronics. The first patent introduces a polishing composition specifically designed to facilitate the high-speed polishing of barrier films and inter-layer dielectric films. This invention ensures that the metallic wiring retains its flatness while preventing dishing and erosion during the polishing process. The composition includes a dicarboxylic acid with carbon chains ranging from 7 to 13 atoms, an oxidizing agent, an abrasive, and water.
The second patent offers a novel polishing composition for copper or copper alloys. This formulation utilizes an oxidizing agent, select amino or carboxylic acids, a sulfonic acid with longer alkyl chains, a fatty acid, and an N-substituted imidazole. Each component plays a vital role in optimizing the polishing effectiveness and maintaining the integrity of copper materials during manufacturing.
Career Highlights
Yoshitomo's career is marked by his affiliations with notable companies, including Showa Denko K.K. and Showa Denko Kabushiki Kaisha. His expertise in the field of chemical-mechanical polishing has made a lasting impact on semiconductor technology.
Collaborations
Throughout his career, Yoshitomo has collaborated with esteemed colleagues such as Yuji Itoh and Takanori Kido. These partnerships have fostered innovation and have been instrumental in the development of his significant patent contributions.
Conclusion
Yoshitomo Shimazu's work exemplifies the spirit of innovation that drives advancements in semiconductor manufacturing. His patents not only reflect his technical acumen but also his commitment to enhancing the precision and efficiency of polishing processes in the industry. His continued contributions are sure to inspire future innovations in this vital field.
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.