This inventor holds 3 USPTO granted patents, plus 2 CIPO patents. Top assignee: Fujitsu Corporation. Active years: 1994-1996.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1994-1996
Title: Tsutomu Shimasue: Innovator in Private Branch Exchange Systems
Introduction
Tsutomu Shimasue is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of telecommunications, particularly in the development of private branch exchange (PBX) systems. With a total of 3 patents, his work has had a lasting impact on communication technologies.
Latest Patents
One of Shimasue's latest patents is a method of multiplexing speech signals and control signals in Integrated Services Digital Network (ISDN) systems. This innovation involves a private branch exchange system that connects to a public telephone network, multiple extensions, and at least one attendant console. The system features an attendant console control circuit that allows for the multiplexing of speech and control signals, enhancing communication efficiency.
Another significant patent is for a private branch exchange system that incorporates an automatic optimal route selection feature. This system accommodates multiple tenants, each with several terminals, and connects to various communication lines. It includes a memory that stores route information for each tenant, allowing the controller to select the optimal route for outgoing calls based on the stored data.
Career Highlights
Throughout his career, Tsutomu Shimasue has worked with prominent companies, including Fujitsu Corporation. His experience in the telecommunications industry has enabled him to develop innovative solutions that address the complexities of modern communication systems.
Collaborations
Shimasue has collaborated with notable professionals in the field, including Masaaki Ishibashi and Kazuhisa Shimazaki. These collaborations have contributed to the advancement of technology in private branch exchange systems.
Conclusion
Tsutomu Shimasue's contributions to telecommunications, particularly in private branch exchange systems, demonstrate his innovative spirit and technical expertise. His patents continue to influence the industry, showcasing the importance of innovation in enhancing communication technologies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile