Location History:
- Kanagawa, JP (1996)
- Yokohama, JP (1991 - 2006)
Company Filing History:
13 out of 52,722 
1 out of 226 
Years Active: 1991-2006
Title: Innovations of Shigeru Ohshima: A Pioneer in Optical Technologies
Introduction
Shigeru Ohshima, an accomplished inventor based in Yokohama, Japan, has contributed significantly to the field of optical technology with a portfolio of 13 patents. His work primarily focuses on improving laser beam transmission and enhancing wavelength accuracy, making a lasting impact on optical communication systems.
Latest Patents
Ohshima's latest innovations include a wavelength stabilizing apparatus that utilizes a quartz etalon designed with light-reflecting film layers and electrode layers. This unique configuration allows for the precise control of the semiconductor laser's oscillation wavelength. A dither signal applied to the axially supported portion facilitates resonance, greatly improving the signal-to-noise ratio by about 100 times compared to conventional methods.
Another notable patent is the optical communication system that efficiently transmits data from a transmitting station. This system leverages an adder that combines a modulated intermediate frequency subcarrier signal with a pilot carrier signal, enabling effective optical signal conversion by directly modulating a semiconductor laser element for transmission through optical fibers.
Career Highlights
Throughout his career, Shigeru Ohshima has played pivotal roles in reputable companies such as Kabushiki Kaisha Toshiba and Kokusai Denshin Denwa Co., Ltd. His expertise in optical technologies has positioned him as a key figure in advancing communication systems.
Collaborations
Ohshima has collaborated with notable professionals in his field, including Tazuko Tomioka and Ichiro Seto. These partnerships have fostered an environment of innovation, enhancing the effectiveness and reach of his projects.
Conclusion
Shigeru Ohshima's contributions to optical technology and communication systems underscore his excellence as an inventor. With a track record of impactful patents and collaborations, he remains a significant figure in the advancement of innovations that shape modern optical communication.
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.