Location History:
- Kamakura, JP (2015 - 2018)
- Yokohama, JP (2014 - 2019)
Company Filing History:
11 out of 10,239 
1 out of 335 Years Active: 2014-2019
Title: Ryuji Masuyama: Innovator in Semiconductor Optical Devices
Introduction
Ryuji Masuyama is a prominent inventor based in Kamakura, Japan. He has made significant contributions to the field of semiconductor optical devices, holding a total of 12 patents. His work focuses on integrating optical waveguides with photodiodes, which has important applications in coherent optical communication systems.
Latest Patents
Masuyama's latest patents include a semiconductor optical device that monolithically integrates optical waveguides with photodiodes having a shared bias pad. This functional optical device is designed for use as a front-end device in coherent optical communication systems. It features a pair of light-receiving elements, signal pads, ground pads, and a bias pad, all integrated onto a substrate. The light-receiving elements generate complementary photocurrents while receiving biases through a common bias pad.
Another notable patent is for a semiconductor optical device that integrates photodiodes with optical waveguides. This device includes a modified layer in the lower cladding layer that forms a conduction barrier, preventing electrical coupling between the photodiodes through the waveguides.
Career Highlights
Throughout his career, Ryuji Masuyama has worked with leading companies in the industry, including Sumitomo Electric Industries and Sumitomo Electric Device Innovations. His expertise in semiconductor technology has positioned him as a key player in the development of advanced optical devices.
Collaborations
Masuyama has collaborated with notable colleagues such as Yoshihiro Yoneda and Hideki Yagi. Their combined efforts have contributed to the advancement of semiconductor optical technologies.
Conclusion
Ryuji Masuyama's innovative work in semiconductor optical devices has significantly impacted the field of optical communication. His patents reflect a deep understanding of the integration of photonics and electronics, paving the way for future advancements in technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.