Location History:
- Mito, JP (1991 - 2002)
- Tokyo, JP (2001 - 2002)
- Nagoya, JP (2005)
Company Filing History:
12 out of 5,289 
2 out of 1,454 
1 out of 164 Years Active: 1991-2005
**Title: Yasutake Ohishi: A Visionary in Optical Innovations**
Introduction
Yasutake Ohishi, based in Mito, Japan, is a distinguished inventor recognized for his significant contributions to the field of optical technology. With an impressive portfolio of 15 patents, he has made substantial advancements that enhance the performance and capabilities of optical devices.
Latest Patents
Among his latest innovations is the ASE light source, an advanced optical device that delivers high outputs within a wavelength band of 1,490 to 1,525 nm. This device utilizes spontaneous emission light from Tm-doped optical fibers and combines it with light amplified by Er-doped optical fibers, creating a powerful output through superimposition of these light sources. Another notable patent focuses on an optical fiber splicing structure that employs a specialized tellurite glass composition. This glass facilitates the development of optical amplifiers and laser devices characterized by their broad bandwidth and low-noise properties. The innovation includes a unique splicing structure that maintains different optical axes for non-silica-based and silica-based optical fibers, optimizing performance by adhering to Snell’s law during splicing.
Career Highlights
Yasutake Ohishi’s career includes remarkable tenures with notable organizations, such as Nippon Telegraph and Telephone Corporation and Rutgers University. His time at these institutions provided him with a robust platform to further his research and develop his inventive concepts.
Collaborations
Throughout his career, Ohishi has collaborated with esteemed colleagues, such as Terutoshi Kanamori and Makoto Yamada. These partnerships have played a crucial role in advancing his research and expanding the impact of his inventions within the optical technology field.
Conclusion
Yasutake Ohishi stands out as a prominent figure in the realm of optical innovations. His groundbreaking patents not only demonstrate his inventive prowess but also reflect the potential for further advancements in optical technology. As the industry continues to evolve, the contributions of inventors like Ohishi will be vital in shaping the future of optical devices and applications.
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.