This inventor holds 5 USPTO granted patents. Top assignees: Nippon Tsu Shin Kogyo K.k., Tie/communications, Inc.. Active years: 1978-1982.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kawasaki, JA (1978)
- Kawasakishi, JP (1980 - 1982)
Company Filing History:
5 out of 8 
5 out of 60 Years Active: 1978-1982
Title: Fumikazu Hamatani: Innovator in Data Transmission and Telecommunications
Introduction
Fumikazu Hamatani is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the fields of data transmission and telecommunications, holding a total of five patents. His innovative work has paved the way for advancements in communication technologies.
Latest Patents
Hamatani's latest patents include a data transmission apparatus and a key telephone call signaling circuit. The data transmission apparatus utilizes interconnected non-inverting and inverting voltage followers to generate signal data. This data is transmitted on power-carrying conductors to a remote detection circuit, which comprises a differential amplifier. This setup effectively cancels out any externally-induced noise that may accompany the signal data. The key telephone call signaling circuit is designed to control the connection of two different audio signal sources to a single audio signal transmission path. This allows for broadcasting audio signals over a telephone set loudspeaker while also controlling the energization of indicators in the telephone set and at the main control circuit. Notably, only four conductors are used to connect the telephone set with the main control circuit, two of which serve as power supply conductors.
Career Highlights
Throughout his career, Hamatani has worked with several companies, including Tie Communications, Inc. and Nippon Tsu Shin Kogyo K.K. His experience in these organizations has contributed to his expertise in telecommunications and data transmission technologies.
Collaborations
Hamatani has collaborated with notable individuals in his field, including Yuji Tanaka and Stephen E. Kerman. These collaborations have further enriched his work and innovations.
Conclusion
Fumikazu Hamatani's contributions to data transmission and telecommunications demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to enhancing communication technologies, making a lasting impact in the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile