Company Filing History:
2 out of 42,485 
1 out of 1 Years Active: 1988
Title: Hiroaki Nanbu: Innovator in Semiconductor Technology
Introduction
Hiroaki Nanbu is a prominent inventor based in Hachioji, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of semiconductor memory and circuits.
Latest Patents
One of Nanbu's latest patents is for a semiconductor memory having redundancy. This invention features a bipolar memory that can be produced with a small area. It includes a body memory for storing data and a spare memory to relieve fault bits of the body memory. The design allows for row selection by cutting fuses in a decoder, while fundamentally avoiding fuses in signal lines such as word lines. This innovation ensures that other components, including power sources and reference voltage sources, are equipped with fuses without compromising operating speed, resulting in only a slight increase in area.
Another notable patent is for a semiconductor circuit that incorporates a current switch circuit. This current mode type logic circuit includes a reference voltage generating circuit that produces a reference voltage in response to a clock signal. The circuit latches the state corresponding to an input signal at the moment the clock signal is received. The reference voltage has three levels based on the clock and input signal voltage levels, allowing for greater signal amplitude processing than previously possible.
Career Highlights
Hiroaki Nanbu has worked with notable companies such as Hitachi, Ltd. and Hitachi Device Engineering. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Some of his coworkers include Kunihiko Yamaguchi and Noriyuki Honma. Their collaboration has likely played a role in advancing the projects they have worked on together.
Conclusion
Hiroaki Nanbu's contributions to semiconductor technology through his patents and career experiences highlight his role as an influential inventor in the field. His innovations continue to impact the efficiency and capabilities of semiconductor devices.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.