Company Filing History:
Years Active: 1990-1999
Title: **Innovative Contributions of Yumiko Iyama in Semiconductor Technology**
Introduction
Yumiko Iyama, a distinguished inventor based in Yokohama, Japan, has made significant strides in the field of semiconductor technology. With a portfolio of three patents, her work has contributed to advancements in memory devices that enhance data processing capabilities.
Latest Patents
Yumiko's latest patents showcase her innovative thinking in semiconductor memory devices. One of her notable inventions is a **semiconductor memory device with a high voltage generation circuit**. This device incorporates a voltage generation circuit that can create a high voltage even when supplied with a low power voltage. It includes a negative voltage generating circuit connected to a row decoder within a boosting circuit, enabling an efficient transfer of high voltage for data operations—even during low external power conditions.
Another significant contribution is her patent for a **nonvolatile semiconductor memory device having a reference potential**. This device utilizes a memory cell transistor along with a voltage switching circuit that selectively generates voltages for data readout and writing. The design improves data sensing by comparing the sense potential from the memory cell with a reference potential generated by a reference cell transistor.
Career Highlights
Yumiko Iyama's professional journey has been marked by her association with **Kabushiki Kaisha Toshiba**, where she has played a pivotal role in developing advanced semiconductor technologies. Her expertise in integrating voltage control and memory cell functionality has positioned her as a leader in her field.
Collaborations
Throughout her career, Yumiko has collaborated with notable colleagues, including Sumio Tanaka and Junichi Miyamoto. These partnerships have fostered an environment of innovation and creativity, enabling the team to push the boundaries of semiconductor technology further.
Conclusion
Yumiko Iyama's inventions and her contributions to semiconductor memory devices illustrate her invaluable impact in the tech industry. Her relentless pursuit of innovation not only enhances technological applications but also sets a precedent for future advancements in semiconductor research and development.