Location History:
- Yokohama, JP (1995 - 2004)
- Kanagawa, JP (2004)
Company Filing History:
Years Active: 1995-2004
Title: Chisai Hirose: A Pioneer in Optical Innovations
Introduction
Chisai Hirose is an accomplished inventor based in Yokohama, Japan. With a portfolio of nine patents, he has significantly contributed to the field of optical technology. His innovative designs and solutions have advanced the functionality and efficiency of optical devices, making him a notable figure in the industry.
Latest Patents
Chisai Hirose's latest patents showcase his expertise in the development of optical systems. One of his remarkable inventions is the **Planar Lightwave Circuit Type Variable Optical Attenuator**. This invention features a Mach-Zehnder interferometer that maintains a small Polarization Dependent Loss (PDL) even at high attenuation levels. The design utilizes optical waveguide arms made from silica-based glass and includes thin-film heaters for adjusting optical lengths.
Another significant patent by Hirose is the **Apparatus for and Method of Monitoring Wavelength Multiplexed Signal Light, as well as an Optical Transmission System Using the Same**. This invention streamlines the monitoring process for wavelength multiplexed signals. It employs a compact apparatus that avoids the complications and high costs typically associated with monitoring systems. Additionally, it utilizes an optical filter to control loss patterns, ensuring effective monitoring of multi-channel optical signals.
Career Highlights
Chisai Hirose is a key member of Sumitomo Electric Industries, Limited, where he applies his innovative capabilities to create cutting-edge optical technologies. His career at this reputable company illustrates his commitment to advancing optical research and development.
Collaborations
Throughout his career, Hirose has collaborated with talented peers, including Hiroo Kanamori and Hitoshi Hatayama. These collaborations have led to productive exchanges of ideas, further enhancing the impact of their collective work on the optical technology landscape.
Conclusion
Chisai Hirose stands out as a leading inventor in the optical technology sector. His nine patents reflect his profound understanding of optical systems and his ability to innovate effectively. As he continues to develop groundbreaking technologies, his contributions will undoubtedly leave a lasting legacy in the field of optics.
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.