This inventor holds 1 USPTO granted patent. Top assignees: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.. Active years: 2012.
Company Filing History:
1 out of 8,782 
1 out of 306 Years Active: 2012
Title: Jumpei Maruyama: Innovator in Semiconductor Memory Technology
Introduction
Jumpei Maruyama is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of semiconductor technology, particularly in memory devices. His innovative approach has led to advancements that enhance the performance and reliability of semiconductor memory systems.
Latest Patents
Maruyama holds a patent for a semiconductor memory device. This invention addresses the challenge of maintaining data read-out resolution during verification processes. It ensures stable read-out operations even when the power supply voltage is reduced. The design includes a current-voltage conversion circuit that transforms cell current into data voltage, along with a sense amplifier that compares this voltage to a reference voltage. The current-voltage conversion circuit features a variable load resistor connected to the memory cell via a bit line. This variable load resistor is composed of P-channel MOS transistors that function as load resistors and additional P-channel MOS transistors that form a switching circuit. Maruyama's patent is a testament to his innovative thinking in semiconductor technology, with 1 patent to his name.
Career Highlights
Throughout his career, Jumpei Maruyama has worked with prominent companies in the electronics industry. He has been associated with Sanyo Electric Co., Ltd. and Sanyo Semiconductor Co., Ltd. These experiences have allowed him to develop and refine his expertise in semiconductor technologies.
Collaborations
Maruyama has collaborated with various professionals in his field, including his coworker Sadao Yoshikawa. Their joint efforts have contributed to advancements in semiconductor memory technology.
Conclusion
Jumpei Maruyama's contributions to semiconductor memory devices highlight his innovative spirit and technical expertise. His work continues to influence the field, paving the way for future advancements in technology.