This inventor holds 7 USPTO granted patents and 6 EPO patents. Top assignee: Siltronic Ag. Active years: 2012-2017.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Yamaguchi, JP (2012 - 2016)
- Burghausen, DE (2014 - 2017)
Company Filing History:
Years Active: 2012-2017
Title: The Innovations of Masamichi Ohkubo
Introduction
Masamichi Ohkubo is a prominent inventor based in Yamaguchi, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the manufacturing of silicon single crystals. With a total of seven patents to his name, Ohkubo's work has had a substantial impact on the industry.
Latest Patents
Ohkubo's latest patents include a method for manufacturing single-crystal silicon. This innovative technique involves growing single crystal silicon ingots by the multi-pulling method in a single crucible. The process minimizes dislocations by incorporating barium as a quartz crystallization inhibitor, with amounts proportional to the diameter of the Czochralski crucible used. Additionally, a magnetic field is applied during at least one of the crystal pulling steps. Another notable patent is for silicon single crystal substrates, which are formed from Czochralski silicon single crystals. These substrates exhibit uniform resistance and a controlled density of bulk micro defects, making them suitable for various applications in electronics.
Career Highlights
Masamichi Ohkubo is currently employed at Siltronic AG, a leading company in the semiconductor industry. His expertise in silicon crystal growth and substrate manufacturing has positioned him as a key figure in advancing semiconductor technologies. His work has not only contributed to the efficiency of silicon production but has also enhanced the quality of silicon substrates used in electronic devices.
Collaborations
Ohkubo has collaborated with notable colleagues such as Katsuhiko Nakai and Hideo Kato. These partnerships have fostered innovation and have been instrumental in the development of new technologies in the semiconductor field.
Conclusion
Masamichi Ohkubo's contributions to the semiconductor industry through his innovative patents and collaborations highlight his importance as an inventor. His work continues to influence the manufacturing processes of silicon single crystals and substrates, paving the way for advancements in electronic technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile