This inventor holds 78 USPTO granted patents and 8 published patent applications and 2 EPO patents, primarily in Ion Beam Technology (CPC class H01J). Top assignees: Hitachi-High-Technologies Corporation, Hitachi, Ltd., Hitachi High-Tech Corporation. Active years: 1987-2025.
Inventors with similar research interests:
Location History:
- Kokubunji, JP (1987 - 1989)
- Koganei, JP (1989 - 1991)
- Hachioji, JP (1996)
- Tanashi, JP (1997 - 1999)
- Nishitokyo, JP (2004 - 2013)
- Tokyo, JP (1987 - 2022)
Company Filing History:
36 out of 2,874 
35 out of 42,719 
5 out of 1,372 
Years Active: 1987-2025
Areas of Expertise:
Title: Hiroyasu Shichi: A Pioneer in Ion Milling Technology
Introduction: Hiroyasu Shichi is a prominent inventor based in Tokyo, Japan, known for his significant contributions to ion milling technology. With an impressive portfolio of 77 patents, Shichi has established himself as a leading figure in the field of precision machining and material processing. His innovative approaches have paved the way for advancements in various technological applications.
Latest Patents: Among his latest patents, Shichi has developed an ion milling apparatus designed to suppress the contamination of a beam forming electrode. This apparatus features an ion gun with a beam forming electrode, a specimen holder for attaching a specimen for ion beam irradiation, a mask for shielding parts of the specimen, and an ion gun controller to operate the gun effectively. Furthermore, he has introduced a novel ion gun of the penning discharge type that remarkably increases milling rates compared to previous technologies. This innovation includes an ion generation unit consisting of a cathode that emits electrons and an anode with a restricted inner diameter, along with magnetic-field generation means utilizing a high-efficiency permanent magnet.
Career Highlights: Shichi's career includes significant tenures at renowned companies such as Hitachi High-Technologies Corporation and Hitachi, Ltd. His work in these organizations has had a lasting impact on the development of ion milling technologies, benefiting various industries that rely on precision fabrication processes.
Collaborations: Throughout his career, Shichi has collaborated with esteemed colleagues, including Satoshi Tomimatsu and Muneyuki Fukuda. These partnerships have fostered a collaborative environment that has enriched Shichi's innovative process and expanded the potential of his inventions.
Conclusion: Hiroyasu Shichi remains a vital contributor to the field of ion milling and materials processing. His dedication to innovation is reflected in his extensive patent portfolio and the advancements he has introduced to industry practices. As technology continues to evolve, Shichi’s work will undeniably influence future developments in precision machining and ion milling applications.