Location History:
- Yokohama, JP (2005 - 2006)
- Kanagawa, JP (2007)
- Crompond, NY (US) (2012 - 2013)
Company Filing History:
4 out of 52,735 
1 out of 164,197 
1 out of 58 Years Active: 2005-2013
Title: Ryoji Hasumi: Innovator in Semiconductor Technology
Introduction
Ryoji Hasumi is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 5 patents. His innovative work focuses on advanced manufacturing techniques and structures that enhance device performance.
Latest Patents
One of Hasumi's latest patents is titled "Maskless inter-well deep trench isolation structure and methods of manufacture." This invention provides a low power maskless inter-well deep trench isolation structure and outlines methods for its manufacture. The process involves depositing multiple layers over a substrate and forming well structures within it. Additionally, it includes the creation of sidewall spacers and a self-aligned deep trench, which is essential for effective isolation in semiconductor devices.
Another notable patent is "Semiconductor device on direct silicon bonded substrate with different layer thickness." This invention describes a Direct Silicon Bonded substrate that consists of two substrates, with the second substrate rotated at a 45-degree azimuthal twist angle relative to the first. The patent emphasizes the relationship between substrate thickness and threshold voltage, aiming to improve mobility in low threshold voltage devices.
Career Highlights
Throughout his career, Ryoji Hasumi has worked with renowned companies such as Kabushiki Kaisha Toshiba and IBM. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.
Collaborations
Hasumi has collaborated with notable colleagues, including Takashi Yoshitomi and Tatsuya Ohguro. Their combined expertise has contributed to advancements in the field and the successful development of various technologies.
Conclusion
Ryoji Hasumi's contributions to semiconductor technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence the development of advanced semiconductor devices and manufacturing techniques.