Location History:
- Hachioji, JA (1977 - 1978)
- Hachiouji, JP (1981)
- Hachioji, JP (1978 - 1985)
- Machida, JP (1995)
Company Filing History:
11 out of 42,485 
2 out of 208 
Years Active: 1977-1995
Title: The Innovative Achievements of Kohei Ishizuka
Introduction
Kohei Ishizuka is a notable inventor based in Hachioji, Japan, recognized for his significant contributions to technology through his 11 patents. His work predominantly focuses on light transmission technologies and associated electronic systems, showcasing his expertise and innovative foresight in the field of electronics.
Latest Patents
Among his most recent inventions is a light transmission module that includes a light receiving element module, where a photodiode and a coupling portion between the photodiode and a first optical fiber are hermetically sealed. The light emitting element module involves a laser diode driven by an electric signal, complemented by a coupling portion connected to a second optical fiber, also hermetically sealed. Furthermore, the design incorporates a two-sided printed circuit board that accommodates electric circuits for both transmitting and receiving systems. These circuits are electrically isolated from one another and are collectively sealed in one body by molds, ensuring their durability alongside the light receiving and emitting modules.
Additionally, he has developed an electric power detecting circuit and a gain control circuit, where an electric power calculating circuit connects to a variable gain amplifier. This setup includes a gain setting circuit that generates a gain control signal for the amplifier, demonstrating his innovative approach to enhancing electronic performance.
Career Highlights
Throughout his career, Kohei Ishizuka has made significant strides in the field by working with prestigious companies, including Hitachi, Ltd. and Hitachi Denshi Kabushiki Kaisha. His time at these institutions has allowed him to collaborate on cutting-edge technologies and contribute to the advancement of electronic systems.
Collaborations
In his journey as an inventor, Kohei has had the privilege to work alongside talented individuals, including Yasuhiro Kita and Yoshitaka Takasaki. These collaborations have enriched his work and led to the development of impactful technologies.
Conclusion
Kohei Ishizuka's inventive spirit and contributions to the field of electronics underscore his importance as an inventor. With a portfolio of 11 patents and a dedication to innovation, he continues to influence the technological landscape in significant ways. His work, particularly in light transmission technology, exemplifies the blend of creativity and engineering that drives advancements in today's world.
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.