Company Filing History:
3 out of 15,895 
1 out of 255 Years Active: 1987-1991
Title: Hisao Kondoh: Innovator in Semiconductor Technology
Introduction
Hisao Kondoh is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work has had a lasting impact on the development of electronic devices.
Latest Patents
One of Hisao Kondoh's latest patents is for a double gate static induction thyristor. This innovative device comprises a semiconductor substrate with a first gate region formed at a first principal surface and a first semiconductor region of a first conduction type on the same surface. A second gate region is located at a second principal surface, with a second semiconductor region of a second conduction type. The design includes gate electrodes on both gate regions and main electrodes on the semiconductor regions, creating a current path between the main electrodes. Additionally, impurity is deeply diffused in the gate regions to enhance performance. Another patent details the method of making this double gate static induction thyristor, which involves an n.sup.- semiconductor substrate and the formation of both n.sup.- and p.sup.- epitaxial semiconductor layers on opposite surfaces. This design allows for effective deposition of cathode and anode electrodes, along with the formation of gate electrodes.
Career Highlights
Throughout his career, Hisao Kondoh has worked with notable companies, including Mitsubishi Electric Corporation and the Research Development Corporation of Japan. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Hisao Kondoh has collaborated with various professionals in the field, including Jun-ichi Nishizawa, further enhancing his contributions to semiconductor advancements.
Conclusion
Hisao Kondoh's work in semiconductor technology, particularly with his innovative patents, showcases his significant role as an inventor. His contributions continue to influence the industry and pave the way for future advancements.