Location History:
- Kawaguchi, JP (1980 - 1981)
- Tokyo, JP (1987)
- Chiba, JP (1994)
Company Filing History:
5 out of 58,130 
1 out of 832,812 Years Active: 1980-1994
Title: Celebrating the Innovative Mind of Keizo Tsukada
Introduction: Keizo Tsukada, an influential inventor based in Tokyo, Japan, has made significant contributions to the field of telecommunications. With six patents to his name, Tsukada's innovative designs focus primarily on enhancing user experience and efficiency in cordless telephone technology.
Latest Patents: Among his recent inventions, Tsukada has developed a groundbreaking cordless telephone apparatus that features a low power stand-by mode. This design allows the handset unit, powered by a battery, to enter a standby state, reducing battery consumption after a designated period of inactivity. The technology includes a hold mode that can be activated during conversations, which can be released by following specific commands or automatically when the time expires. Another notable invention is a dual-function cordless telephone that operates in intercom mode for operator communication. If an incoming call is detected while in intercom mode, both the base unit and the handset unit signal the call with ringing sounds, ensuring that the user can respond promptly without loud disruptions.
Career Highlights: Tsukada's impressive career includes valuable experiences with renowned companies such as Sony Corporation. His work has helped shape the future of communication devices, turning innovative ideas into practical solutions that cater to users' needs.
Collaborations: Throughout his career, Tsukada has collaborated with talented individuals, including his coworkers Masato Yamagata and Masato Yamagawa. Their collective efforts in research and development have fostered a productive environment for innovation within the telecommunications sector.
Conclusion: Keizo Tsukada represents the spirit of innovation with his dedication to creating advanced telephone technologies. His latest patents exemplify his commitment to improving user experience and reducing energy consumption. As a prominent figure in the field, Tsukada continues to inspire future inventors and contribute to the ever-evolving world of telecommunications.