Company Filing History:
Years Active: 1995-2002
Title: Masao Kunitou: Innovator in Semiconductor Technology
Introduction
Masao Kunitou is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, particularly in memory devices. With a total of 6 patents to his name, Kunitou's work has advanced the capabilities of memory storage systems.
Latest Patents
Kunitou's latest patents include a semiconductor memory device having a multilevel memory cell and a method of manufacturing the same. This innovative semiconductor ROM device enables the acquisition of a reference current that can reliably distinguish data stored in a multilevel mask ROM, which is designed to store multilevel data of three or more levels per memory cell. The device features a memory cell where a threshold voltage is established based on the amount of ions injected into the channel region of a cell transistor. Additionally, it includes a reference cell for generating the reference current, which is compared with the current read from the memory cell, along with dummy cells positioned adjacent to the reference cell.
Another notable patent is the method of setting threshold voltage levels of a multiple-valued mask programmable read-only memory. This method involves setting various threshold voltage levels across multiple cell regions for a mask programmable semiconductor device. It employs a second impurity first-code selective ion-implantation technique to ensure that at least one selected cell region achieves a different threshold voltage level than the others, thereby enhancing the device's performance.
Career Highlights
Masao Kunitou is currently employed at NEC Corporation, where he continues to innovate in the semiconductor field. His work has been instrumental in developing advanced memory technologies that are crucial for modern electronic devices.
Collaborations
Kunitou has collaborated with notable colleagues, including Kenji Hibino and Kazuyuki Yamasaki. Their combined expertise has contributed to the successful development of cutting-edge semiconductor technologies.
Conclusion
Masao Kunitou's contributions to semiconductor technology, particularly in memory devices, have established him as a key figure in the industry. His innovative patents and collaborations reflect his commitment to advancing technology and improving memory storage solutions.