Location History:
- Itsukaichi, JP (1981)
- Tokyo, JP (1982 - 1985)
Company Filing History:
4 out of 522 
2 out of 42,494 
Years Active: 1981-1985
Title: Kazuo Hamazato: Innovator in Hybrid Circuit Technology
Introduction
Kazuo Hamazato is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of telecommunications through his innovative designs and patents. With a total of 4 patents, Hamazato has established himself as a key figure in the development of hybrid circuits and current supply systems.
Latest Patents
One of Hamazato's latest patents is a hybrid circuit in a telephone subscriber interface circuit. This hybrid circuit is composed of semiconductor current amplifiers that operate without inductance and large capacitance. The design allows for the adjustment of the DC speech current supplied by a power source and the speech signal from a modem. This ensures that the subscriber line is terminated with a predetermined impedance of 600 ohms. Additionally, the circuit effectively cancels common mode noise induced on the subscriber line, enhancing the quality of the speech signal transmission. Another notable patent is a current supply circuit that features a DC power feed circuit with constant current characteristics. This circuit includes detecting circuits and a DC-DC converter that optimizes the voltage output for efficient operation.
Career Highlights
Throughout his career, Kazuo Hamazato has worked with notable companies such as Nippon Telegraph and Telephone Public Corporation and Hitachi, Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the telecommunications sector.
Collaborations
Hamazato has collaborated with esteemed colleagues, including Junjiro Kitano and Toshio Hayashi. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.
Conclusion
Kazuo Hamazato's work in hybrid circuit technology and current supply systems has made a lasting impact on the telecommunications industry. His innovative patents and collaborations highlight his dedication to advancing technology and improving communication systems.