Company Filing History:
13 out of 35,756 
3 out of 1,038 
1 out of 89 
Years Active: 1978-2020
Title: Mitsutoshi Sugawara: A Pioneer in Semiconductor Innovations
Introduction
Mitsutoshi Sugawara is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 17 patents. His work has been instrumental in advancing various electronic devices and systems.
Latest Patents
Among his latest patents are a PLL circuit and a CDR apparatus. The PLL circuit includes a phase comparator, a charge pump, a loop filter, a voltage-controlled oscillator, a frequency divider, and a phase compensator. The loop filter consists of a resistor, a first capacitance element, and a second capacitance element. The phase compensator is provided in parallel to the charge pump and adds a differentiation term to an open-loop transfer function. It includes a buffer that receives a phase difference signal output from the phase comparator and a third capacitance element placed between the output terminal of the buffer and the input terminal of the loop filter. Another notable patent is for a semiconductor integrated circuit device featuring a variable current source. This device includes a control circuit that allows the current source to adjust the current value in response to a set of control signals, along with a shift register that serially receives control data and produces the set of control signals in a parallel form.
Career Highlights
Mitsutoshi Sugawara has worked with notable companies such as NEC Corporation and Nippon Electric Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.
Collaborations
He has collaborated with esteemed colleagues, including Shinji Nozawa and Kazunori Nishijima. Their combined expertise has contributed to the successful development of various technologies in the semiconductor field.
Conclusion
Mitsutoshi Sugawara's contributions to semiconductor innovations have made a lasting impact on the industry. His patents reflect his dedication to advancing technology and improving electronic devices.