Location History:
- Hachioji, JP (1987 - 1989)
- Tokorozawa-shi, Saitama, JP (1990)
- Tokorozawa, JP (1990 - 2012)
- Tokyo, JP (2014)
Company Filing History:
27 out of 42,508 
10 out of 3,781 
2 out of 217 
Years Active: 1987-2014
Areas of Expertise:
Title: Innovations of Katsuyoshi Washio: A Pioneer in Magnetoresistance Technology
Introduction: Katsuyoshi Washio is an accomplished inventor based in Tokorozawa, Japan, known for his significant contributions to the field of magnetoresistance devices. With an impressive portfolio of 48 patents, he has showcased his expertise in developing advanced technologies that push the boundaries of electrical engineering and communication systems.
Latest Patents: Washio's recent patents reflect his innovative spirit and technical prowess. One of his notable inventions is the "Stacked Magnetoresistance Device Responsive to a Magnetic Field Generally Perpendicular to a Side Face Running Along a Channel of the Device." This sophisticated device comprises a substrate and an elongate semiconductor channel, featuring at least two conductive leads that provide a set of contacts to the channel. The design incorporates an optional semiconductor shunt and allows for operation in magnetic fields that are generally perpendicular to the channel's side face.
Another significant patent from Washio is the "Variable-Gain Amplifier Circuit and Wireless Communication Device Integrated Circuit Equipped Therewith." This invention presents a variable-gain amplifier circuit that operates on low voltage and exhibits low distortion. It is specifically designed for low-power consumption in wireless communication systems, featuring a variable-load circuit that provides a wide range of impedance variation.
Career Highlights: Over the years, Katsuyoshi Washio has had a distinguished career, particularly with Hitachi, Ltd., where he further honed his skills and contributed to groundbreaking projects. His work has garnered considerable recognition in the realms of electronics and communications.
Collaborations: Throughout his career, Washio has collaborated with esteemed professionals such as Katsuya Oda and Masao Kondo. These partnerships have enabled him to enhance his inventions and broaden his impact within the industry.
Conclusion: Katsuyoshi Washio stands out as a prominent inventor in the field of magnetoresistance and wireless communications. His innovative patents and collaborative efforts with other industry leaders underscore his commitment to advancing technology. With 48 patents to his name, he continues to inspire future generations of inventors and engineers.