This inventor holds 9 USPTO granted patents and 4 published patent applications, plus 1 CIPO patent. Top assignees: Nippon Telegraph and Telephone Corporation, Nippon Telephone and Telegraph Corporation. Active years: 1994-2024.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Tokyo, JP (1997 - 2003)
- Atsugi, JP (1994 - 2022)
- Musashino, JP (2023 - 2024)
Company Filing History:
8 out of 5,300 
1 out of 21 Years Active: 1994-2024
Title: **The Innovations of Katsuhiko Hirabayashi**
Introduction
Katsuhiko Hirabayashi, an accomplished inventor based in Atsugi, Japan, has made significant contributions to the field of optical technologies. With a remarkable portfolio of nine patents, his work focuses on enhancing transmission efficiencies in optical waveguides and related devices.
Latest Patents
Hirabayashi's latest patents illustrate his innovative approach to optical engineering. One notable patent is the "End Structure of a Waveguide," which introduces a protective film measuring between 0.5 μm to 3.0 μm on the end surface of transmission lines. This design replaces traditional end caps, eliminating adhesive that could compromise signal quality. The result is a substantial reduction in connection loss between fibers or waveguides, achieving values of 0.5 dB or less. Furthermore, his "Method for Adjusting Transmitted Wavelength of Signal Light Transmitted Through Optical Waveguide Device" offers a novel technique for adjusting wavelengths by manipulating the refractive index of resin with blue light. This innovation enhances the transmission of signal light within specified wavelengths.
Career Highlights
Hirabayashi’s professional journey includes significant roles at leading telecommunications firms, notably Nippon Telegraph and Telephone Corporation and Nippon Telephone and Telegraph Corporation. His tenure at these companies has greatly influenced the development of advanced optical technologies.
Collaborations
Throughout his career, Hirabayashi has collaborated with talented individuals, including Ryoichi Kasahara and Tsuyoshi Yamamoto. These partnerships have fostered a creative environment that has propelled numerous inventions and innovations in the field.
Conclusion
Katsuhiko Hirabayashi exemplifies the spirit of innovation in the realm of optical technologies. With his extensive patent portfolio and impactful collaborations, he continues to pave the way for advancements that improve the efficiency and functionality of optical waveguides. His contributions significantly enhance the performance of telecommunications systems and reflect the ongoing evolution of technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile