Location History:
- Tokyo, JP (1979 - 1983)
- Saitama, JP (1991)
- Tsurugashima, JP (1996)
Company Filing History:
5 out of 2,861 
1 out of 10,282 
Years Active: 1979-1996
Title: Teruo Tohma: Innovator in Semiconductor Technology
Introduction
Teruo Tohma is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of luminous elements and optical devices. With a total of 5 patents, Tohma's work has had a lasting impact on the industry.
Latest Patents
One of Tohma's latest patents is a method for producing a luminous element of III-group nitride. This innovative process involves creating a crystal layer of Al.sub.x Ga.sub.1-x).sub.1-y In.sub.y N, to which a II-group element is added. The method includes several steps, such as irradiating a low energy electron beam onto the crystal layer's surface and pulse-heating a thin film for absorbing optical energy. This process aims to produce high-precision color purity in bluish green, blue, or UV light-emitting diodes and semiconductor laser diodes. Another notable patent is the optical fiber nonlinear wavelength modulator device. This device emits a secondary harmonic component through Cerenkov radiation and features a core made of a single crystal of a non-linear optical material, with a cladding composed of glass.
Career Highlights
Throughout his career, Teruo Tohma has worked with several notable companies, including Pioneer Electronic Corporation and Sumitomo Electric Industries, Limited. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in semiconductor technology.
Collaborations
Tohma has collaborated with esteemed colleagues such as Tsunehiro Tsukagoshi and Hiroshi Muraoka. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.
Conclusion
Teruo Tohma's contributions to semiconductor technology and his innovative patents highlight his role as a leading inventor in the field. His work continues to influence advancements in luminous elements and optical devices, showcasing the importance of innovation in technology.