This inventor holds 6 USPTO granted patents and 2 published patent applications. Top assignee: Sandisk Technologies Inc.. Active years: 2015-2018.
Location History:
- Mie, JP (2016)
- Yokkaichi, JP (2015 - 2018)
Company Filing History:
Years Active: 2015-2018
Title: Tomoyasu Kakegawa: Innovator in Memory Device Technology
Introduction
Tomoyasu Kakegawa is a prominent inventor based in Yokkaichi, Japan. He has made significant contributions to the field of memory device technology, holding a total of 6 patents. His work focuses on enhancing the performance and efficiency of three-dimensional memory devices.
Latest Patents
Kakegawa's latest patents include innovative methods for creating multiple liner interconnects for three-dimensional memory devices. This patent describes a process where an opening is formed through at least one dielectric material layer. A first metallic liner is deposited on the bottom surface and sidewalls of the opening using a first metallic material. Following this, a metal portion, which can be an elemental metal or an intermetallic alloy, is formed on the first metallic liner. A second metallic liner, made from a different metallic material, is then placed directly on the top surface of the metal portion. This design ensures that both metallic liners protect the metal portion from dielectric material layers that may be deposited later. Another notable patent involves a buried etch stop layer for damascene bit line formation, which includes a stack of dielectric layers and the formation of contact plugs.
Career Highlights
Kakegawa is currently employed at SanDisk Technologies Inc., where he continues to push the boundaries of memory technology. His innovative approaches have led to advancements that are crucial for the development of modern memory devices.
Collaborations
Throughout his career, Kakegawa has collaborated with notable colleagues, including Katsuo Yamada and Takuya Futase. These partnerships have fostered a creative environment that has resulted in groundbreaking innovations.
Conclusion
Tomoyasu Kakegawa's contributions to memory device technology exemplify the spirit of innovation. His patents reflect a deep understanding of materials and processes that enhance device performance. His work continues to influence the field and inspire future advancements.