This inventor holds 10 USPTO granted patents. Top assignees: Sumitomo Electric Industries, Limited, Mitsubishi Denki Kabushiki Kaisha, Nippon Telegraph and Telephone Corporation. Active years: 1984-1998.
Location History:
- Hyogo, JP (1984 - 1992)
- Itami, JP (1992 - 1998)
Company Filing History:
8 out of 10,631 
2 out of 21,351 
1 out of 5,300 
Years Active: 1984-1998
Title: Innovator Spotlight: Akira Ohtsuka
Introduction
Akira Ohtsuka, a prominent inventor based in Itami, Japan, has made significant contributions to the field of semiconductor technology. With a total of ten patents to his name, Ohtsuka's work has largely focused on enhancing the efficiency and functionality of semiconductor apparatus and data processors.
Latest Patents
Among his latest innovations is a patent for a substrate for semiconductor apparatus. This invention features a substrate designed to efficiently radiate heat generated by loaded semiconductor chips. It utilizes a sintered compact comprised of 2 to 30 wt. % copper in tungsten and/or molybdenum, providing a thermal expansion coefficient similar to that of semiconductor chips and surrounding materials, ensuring optimal performance.
Another notable patent is for a data processor for invalidating prefetched instructions or branch history. This innovative data processor integrates unique instructions that invalidate content stored in cache memory, instruction queues, pipelines, and branch prediction mechanisms. By securely coordinating instructional strings between main memory and actively processed instructions, it effectively prevents conflicts within instruction pipelines.
Career Highlights
Throughout his career, Akira Ohtsuka has worked with respected companies in the technology sector, including Sumitomo Electric Industries and Mitsubishi Electric Corporation. His experience in these organizations has profoundly influenced his innovative approach to semiconductor technologies and data processing.
Collaborations
Ohtsuka has collaborated with renowned professionals such as Nobuo Ogasa and the talented Mituo Osada. Their collective expertise and creativity have contributed to Akira's development of groundbreaking inventions in the semiconductor field.
Conclusion
Akira Ohtsuka continues to shape the landscape of semiconductor technology with his innovative solutions and inventive spirit. As he advances in his career, his contributions remain crucial in enhancing the performance and reliability of modern electronic devices.