This inventor holds 14 USPTO granted patents and 1 EPO patent. Top assignees: International Superconductivity Technology Center, Fujikura Limited, Kyushu Electric Power Co., Inc.. Active years: 1992-2007.
Location History:
- Tokyo, JP (1992 - 1999)
- Nagoya, JP (1998 - 1999)
- Matsue, JP (2007)
Company Filing History:
10 out of 128 
3 out of 1,870 
3 out of 32 
Years Active: 1992-2007
Title: Yasuji Yamada: Innovator in Oxide Crystal Technology
Introduction
Yasuji Yamada is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of oxide crystal technology. With a total of 14 patents to his name, Yamada has made remarkable advancements that have implications in various technological applications.
Latest Patents
One of Yamada's latest patents is a method for preparing an oxide crystal film/substrate composite. This innovative process involves forming a Y123 type oxide crystal film from a solution phase on a substrate using a liquid phase method. The method addresses critical issues such as cracking of the oxide crystal film, separation from the substrate, and the development of a reaction layer between the substrate and the solution. The solvent used for this process can be either a BaO–CuO–BaF system or a BaO–CuO–Ag–BaF system. Additionally, the temperature of the solution is controlled to not exceed 850°C during the growth of the oxide crystal film on the substrate.
Another notable patent involves a composite metal oxide material. This composite includes a substrate with an oriented film made of a Y123 metal oxide crystal, where the formula is LnBa₂Cu₃Oᵧ, with Ln representing Y or a lanthanoid element, and y being a number between 6 and 7. A layer of the same Y123 metal oxide is formed