This inventor holds 3 USPTO granted patents. Top assignee: Nippon Sheet Glass Company, Limited. Active years: 1991-1993.
Location History:
- Osaka, JP (1991)
- Tsukuba, JP (1991 - 1993)
Company Filing History:
Years Active: 1991-1993
Title: Keiji Oyoshi: Innovator in Semiconductor Technology
Introduction
Keiji Oyoshi is a prominent inventor based in Tsukuba, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His innovative approaches have paved the way for advancements in the production of semiconductor films and optical waveguides.
Latest Patents
One of Oyoshi's latest patents is a method of making a semiconductor film where hydrogen and/or fluorine is utilized. This process allows for the production of a polycrystalline semiconductor film at a low temperature. The method involves depositing an amorphous silicon film on a glass substrate using plasma CVD, followed by heating the film to release hydrogen and grow the crystal phase through silicon ion implantation. This innovative approach enables the formation of polycrystalline silicon films at lower temperatures without inhibiting crystal growth.
Another notable patent is the method of forming optical waveguides by ion implantation. In this process, at least two ionic species capable of forming an oxide, nitride, or halide are implanted into the surface of a substrate. This technique enhances the functionality and efficiency of optical waveguides, showcasing Oyoshi's expertise in the field.
Career Highlights
Keiji Oyoshi is currently associated with Nippon Sheet Glass Company, Limited, where he continues to work on cutting-edge technologies in semiconductor and optical materials. His career is marked by a commitment to innovation and excellence in research and development.
Collaborations
Throughout his career, Oyoshi has collaborated with esteemed colleagues such as Tomonori Yamaoka and Takashi Tagami. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and advancements in technology.
Conclusion
Keiji Oyoshi's contributions to semiconductor technology and optical waveguides highlight his role as a leading inventor in his field. His innovative methods and collaborative spirit continue to drive advancements in technology, making a lasting impact on the industry.