This inventor holds 4 USPTO granted patents and 1 published patent application. Top assignees: Hitachi, Ltd., Hitachi Vlsi Engineering Corp.. Active years: 1992-1995.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Hino, JP (1992 - 1995)
- Tokyo, JP (1994 - 1995)
Company Filing History:
4 out of 42,726 
3 out of 182 
Years Active: 1992-1995
Title: Yutaka Shimbo: Innovator in Semiconductor Technology
Introduction
Yutaka Shimbo is a prominent inventor based in Hino, Japan, known for his significant contributions to semiconductor technology. With a total of four patents to his name, Shimbo has made remarkable advancements in the field, particularly in memory devices.
Latest Patents
One of Shimbo's latest patents is a semiconductor memory device facilitated with plural self-refresh modes. This innovative device includes control circuitry that enables different refresh periods, enhancing the efficiency of memory operations. The device features a pseudo refresh mode for long nonselected states and a virtual refresh mode for intermittent refreshing during memory access. This dual-mode approach optimizes power consumption while ensuring data stability.
Another notable patent is for a large-scale semiconductor integrated circuit device and method. This invention employs capacitance cutting buffer circuits and drivers to reduce signal transmission delays in LSI circuit devices. The design allows for independent testing of subchips and incorporates fault test circuits to isolate and manage faulty components effectively. This fault-relieving technique ensures the usability of the remaining subchip, even in the presence of defects.
Career Highlights
Throughout his career, Yutaka Shimbo has worked with esteemed companies such as Hitachi, Ltd. and Hitachi VLSI Engineering Corporation. His experience in these organizations has significantly influenced his innovative work in semiconductor technology.
Collaborations
Shimbo has collaborated with notable colleagues, including Takeshi Kajimoto and Katsuyuki Sato. Their joint efforts have contributed to advancements in semiconductor design and functionality.
Conclusion
Yutaka Shimbo's contributions to semiconductor technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the development of efficient memory devices and integrated circuits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile