This inventor holds 4 USPTO granted patents. Top assignees: Kokusai Electric Co., Ltd., Kiyohiko Itoh, Nippon Telegraph and Telephone Corporation. Active years: 1991.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Hamura, JP (1991)
- Tokyo, JP (1991)
- Tokyo, US (1991)
Company Filing History:
4 out of 153 
1 out of 1 
1 out of 5,300 
Years Active: 1991
Title: Sadafumi Sakamoto: Innovator in Radio Technology
Introduction
Sadafumi Sakamoto is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of radio technology, holding a total of 4 patents. His innovative designs have advanced the functionality and efficiency of personal radio paging services and antennas.
Latest Patents
One of Sakamoto's latest patents is a receiver for personal radio paging service. This device is housed in a thin, card-shaped housing that contains the circuitry of the receiver. The housing is constructed by sandwiching a frame made of insulating material between two parallel rectangular panels of conductive material. Conductive fasteners are used to connect the panels, allowing the housing to function as a radio frequency receiving antenna.
Another significant patent is for a small antenna designed for portable radios. This antenna features two planar conductive boards arranged in parallel at a small interval relative to the received radio wavelengths. A dielectric frame maintains this spacing, and arbitrary feeding points are selected along the edges of the boards. Conductors positioned at these feeding points can short-circuit the boards, allowing for adjustments based on the direction of incoming radio waves.
Career Highlights
Sakamoto has worked with prominent companies in the technology sector, including Kokusai Electric Co., Ltd. and Kiyohiko Itoh. His experience in these organizations has contributed to his expertise in radio technology and innovation.
Collaborations
Throughout his career, Sakamoto has collaborated with notable individuals such as Katsumi Ushiyama and Kiyohiko Itoh. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Sadafumi Sakamoto's contributions to radio technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the field, showcasing the importance of innovation in advancing communication technologies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile