Company Filing History:
Years Active: 1994-2014
Title: Innovations of Yoshinori Nishizawa
Introduction
Yoshinori Nishizawa is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical communication technology. With a total of 6 patents to his name, his work has had a considerable impact on the industry.
Latest Patents
Nishizawa's latest patents include an optical transmitting apparatus, an optical receiving apparatus, and an optical communication system comprising them. These inventions utilize a phase shift unit that provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal is superimposed on one of the optical signals, while a signal that is phase-shifted by π/2 from the low-frequency signal is superimposed on the other optical signal. The optical signals are coupled, and a portion of them is converted into an electrical signal by a photodiode. The 2f component contained in the electrical signal is extracted, and the bias voltage provided to the phase shift unit is controlled by feedback control to minimize the 2f component.
Career Highlights
Nishizawa is currently employed at Fujitsu Corporation, where he continues to innovate in the field of optical communication. His work has been instrumental in advancing technologies that enhance data transmission capabilities.
Collaborations
Some of his notable coworkers include Hiroki Ooi and Takuji Yamamoto, who have collaborated with him on various projects within the company.
Conclusion
Yoshinori Nishizawa's contributions to optical communication technology through his patents and work at Fujitsu Corporation highlight his role as a key innovator in the field. His inventions continue to shape the future of data transmission.
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.