Company Filing History:
2 out of 1,440 
2 out of 50 Years Active: 1994-1996
Title: The Innovative Contributions of Sadayasu Yamakawa
Introduction
Sadayasu Yamakawa is a notable inventor based in Nagai, Japan. With a total of two patents to his name, Yamakawa has made significant strides in the field of electroluminescence display technology. His work demonstrates a commitment to advancing the efficiency and manufacturing processes of electroluminescent lamps.
Latest Patents
Yamakawa's latest patents present innovative solutions to enhancing electroluminescent lamps. The primary invention is an EL lamp that boasts a higher luminescence efficiency. This novel design incorporates an aluminum foil that features at least one specularly polished surface. On this polished surface, an anodized oxide film is formed, followed by the application of a light-emitting EL layer and a transparent electrode. The manufacturing process involves several key steps: specular polishing of at least one aluminum foil surface, creation of the anodized oxide film, and the direct formation of the light-emitting EL layer atop the aluminum oxide film, capped with a transparent electrode. This systematic approach not only improves luminescence efficiency but also streamlines the manufacturing process.
Career Highlights
Throughout his career, Sadayasu Yamakawa has worked with renowned companies such as Stanley Electric Co., Ltd. and Japan Metals & Chemicals Co., Ltd. His experiences in these organizations have undoubtedly contributed to his expertise in the field of electroluminescence technology, enabling him to develop ground-breaking innovations.
Collaborations
Yamakawa has collaborated with other talented individuals in the industry, including his coworkers Kenichi Kondo and Takahiro Saida. These partnerships have facilitated the exchange of ideas and fostered an environment ripe for innovation, further enhancing the impact of their collective work in the field.
Conclusion
Sadayasu Yamakawa stands out as a forward-thinking inventor whose contributions to electroluminescence display technology are noteworthy. With his patented innovations focusing on efficiency and manufacturing processes, he continues to influence the field and inspire future developments in lighting technology.