This inventor holds 4 USPTO granted patents. Top assignees: Seiko Instruments Inc, Ablic Inc., Sii Semiconductor Corporation. Active years: 2016-2021.
Company Filing History:
2 out of 2,903 
1 out of 347 
1 out of 163 Years Active: 2016-2021
Title: Fumimasa Azuma: Innovator in Circuit Design
Introduction
Fumimasa Azuma is a notable inventor based in Phnom Penh, Cambodia. He has made significant contributions to the field of circuit design, holding a total of 4 patents. His work focuses on enhancing the functionality and efficiency of electronic circuits.
Latest Patents
One of Azuma's latest patents is an "Input circuit having hysteresis without power supply voltage dependence." This innovative input circuit includes a first and second input transistor connected to an input terminal. It features a current source that allows current to flow in the second input transistor through a current mirror. Additionally, a switch is provided between the current mirror and the current source, with a control terminal connected to the drain of the first input transistor. The design allows for the current drivability of the second input transistor to be switched by an output signal, determining the threshold voltage based on the current drivability and the current source.
Another significant patent is the "Overheat protection circuit and voltage regulator." This invention aims to provide an overheat protection circuit that is not affected by leak current while maintaining low current consumption and high detection accuracy. The circuit includes a leak current detection mechanism that identifies high-temperature leak currents, a bias circuit that allows bias current to flow in response to the detection output, and a temperature detection circuit operated by the bias current.
Career Highlights
Fumimasa Azuma has worked with reputable companies in the electronics industry, including Seiko Instruments Inc. and Sii Semiconductor Corporation. His experience in these organizations has contributed to his expertise in circuit design and innovation.
Collaborations
Throughout his career, Azuma has collaborated with talented individuals such as Daiki Endo and Takashi Matsuda. These partnerships have likely fostered a creative environment that has led to the development of his innovative patents.
Conclusion
Fumimasa Azuma is a distinguished inventor whose work in circuit design has resulted in valuable patents that enhance electronic functionality. His contributions to the field continue to influence advancements in technology.