This inventor holds 2 USPTO granted patents. Top assignees: British Telecommunications Public Limited Company, Other. Active years: 1997-2001.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:

Years Active: 1997-2001
Title: The Innovations of Makoto Okai
Introduction
Makoto Okai is a notable inventor based in Kokubunji, Japan. He has made significant contributions to the field of optical devices, particularly through his innovative patents. With a total of 2 patents, Okai's work focuses on enhancing optical filtering technologies.
Latest Patents
Okai's latest patents include advancements in optical filters. One of his patents describes an optical filter formed from at least two gratings located in a waveguide region of a semiconductor optical device. Each grating features a multiple peak optical passband, and they are spaced apart to create an optical cavity with a comb-filter characteristic. These gratings may be situated in the active region of an optical gain element, often utilizing superstructure gratings (SSGs). Additionally, he has developed optical comb filters that can be used with waveguides and lasers, further showcasing his expertise in this area.
Career Highlights
Throughout his career, Okai has worked with various organizations, including British Telecommunications Public Limited Company. His experience in the industry has allowed him to refine his skills and contribute to significant technological advancements.
Collaborations
Okai has collaborated with notable individuals such as Ian F Lealman and Michael J Robertson. These partnerships have likely enriched his work and led to innovative solutions in optical technology.
Conclusion
Makoto Okai's contributions to optical filtering technology demonstrate his commitment to innovation and excellence in his field. His patents reflect a deep understanding of semiconductor optical devices and their applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile