Location History:
- Tokyo, JP (2005)
- Yamanashi, JP (2010)
Company Filing History:
Years Active: 2005-2010
Title: Tsutomu Mitsuzuka: Innovator in Magnetic Sensor Technology
Introduction
Tsutomu Mitsuzuka is a prominent inventor based in Yamanashi, Japan. He has made significant contributions to the field of magnetic sensors, holding a total of 2 patents. His work focuses on developing advanced technologies that enhance the functionality and efficiency of electronic devices.
Latest Patents
Mitsuzuka's latest patents include a magnetic sensor and a method of manufacturing the same, as well as an electronic device. The magnetic sensor features a magnetic field sensing portion that incorporates an alloy metal thin film composed of nickel (Ni), iron (Fe), and cobalt (Co) as its main components. This innovative sensor is capable of detecting two or more magnetic fields, with at least one field being 2.5 mT or more. The design ensures that the minimum and maximum magnetic fields detected are separated by 0.5 mT or more. The alloy metal thin film is engineered to meet specific criteria, including a magneto-striction constant of 1.5×10 or less and an anisotropic magnetic field ranging from 8 Oe to 16 Oe, with a magnetic resistance change ratio of 2.5% or more.
Another notable patent involves a method for producing a magnetoresistive (MR) device. This device consists of a ferromagnetic tunnel junction made up of a first ferromagnetic layer, an insulation layer, and a second ferromagnetic layer. The production method includes depositing a metal or semiconductor on the first ferromagnetic layer, which then reacts with oxygen to form an oxide layer. This oxide layer subsequently reacts with oxygen at an excitation level to create the insulation layer, upon which the second ferromagnetic layer is formed.
Career Highlights
Tsutomu Mitsuzuka is currently employed at NEC Corporation, where he continues to innovate in the field of magnetic sensors and electronic devices. His work has been instrumental in advancing the technology used in various applications.
Collaborations
Mitsuzuka has collaborated with notable colleagues, including Ken-ichi Shimura and Hisanao Tsuge, contributing to the development of cutting-edge technologies in his field.
Conclusion
Tsutomu Mitsuzuka's contributions to magnetic sensor technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of materials and