Company Filing History:
Years Active: 1990-2003
Title: Chikao Fujinuma: Innovator in Semiconductor Technology
Introduction
Chikao Fujinuma is a prominent inventor based in Gunma, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on enhancing the performance and reliability of semiconductor integrated circuit devices.
Latest Patents
Fujinuma's latest patents include innovative methods for improving semiconductor integrated circuit devices. One notable patent describes a semiconductor integrated circuit device that features collector regions with films capable of withstanding high voltage. This is achieved by laminating four epitaxial layers during the formation of the collector regions. The design aims to reduce interference effects between transistors and minimize parasitic transistors by etching the epitaxial layers and substrate in a V-groove. Each etched region is dielectrically isolated by poly-Si. Another patent outlines a method for manufacturing semiconductor integrated circuit devices, where a buried layer of a collector region and a buried layer of a collector taking-out region are formed simultaneously at each epitaxial layer. This innovative approach allows for the creation of thick film collector regions and collector taking-out regions, enhancing the device's high voltage capabilities.
Career Highlights
Chikao Fujinuma is currently employed at Sanyo Electric Co., Ltd., where he continues to develop cutting-edge semiconductor technologies. His work has been instrumental in advancing the capabilities of integrated circuits, making them more efficient and reliable.
Collaborations
Fujinuma has collaborated with notable colleagues, including Tadayoshi Takada and Osamu Kitamura. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas in semiconductor research.
Conclusion
Chikao Fujinuma's contributions to semiconductor technology are noteworthy, with his patents reflecting a commitment to innovation and excellence. His work at Sanyo Electric Co., Ltd. and collaborations with esteemed colleagues further highlight his impact on the industry.