Location History:
- Hyogo-ken, JP (2000)
- Kobe, JP (1994 - 2008)
Company Filing History:
3 out of 1,100 
2 out of 1,883 
1 out of 1 Years Active: 1994-2008
Title: Tatsuya Yasunaga: Innovator in Semiconductor Technology
Introduction
Tatsuya Yasunaga is a prominent inventor based in Kobe, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 6 patents. His innovative approaches have paved the way for advancements in the fabrication of semiconductor devices.
Latest Patents
One of Yasunaga's latest patents is a method for fabricating copper-based interconnections for semiconductor devices. This method involves depositing a thin film of copper or copper alloy on a dielectric film through sputtering. The dielectric film features trenches and/or via holes arranged on or above a substrate. The process includes high temperature and high pressure treatment to embed the copper or copper alloy into the trenches and/or via holes. Notably, the sputtering is conducted at a substrate temperature ranging from -20°C to 0°C, using a gaseous mixture of hydrogen gas and an inert gas in a ratio of 5:95 to 20:80.
Another significant patent is for a hard coating coated member that exhibits excellent wear resistance. This innovation highlights Yasunaga's commitment to enhancing the durability and performance of materials used in various applications.
Career Highlights
Throughout his career, Tatsuya Yasunaga has worked with notable companies, including Kabushiki Kaisha Kobe Seiko Sho and Kobe Steel, Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and materials science.
Collaborations
Yasunaga has collaborated with esteemed colleagues such as Yasuaki Sugizaki and Keiji Ueda. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Tatsuya Yasunaga's contributions to semiconductor technology and his innovative patents reflect his dedication to advancing the field. His work continues to influence the development of new technologies and materials, solidifying his reputation as a leading inventor in Japan.
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.