This inventor holds 3 USPTO granted patents. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Nissan Motor Company Limited. Active years: 1976-1978.
Location History:
- Tokyo, JA (1976)
- Tokyo, JP (1978)
Company Filing History:
3 out of 21,351 
3 out of 13,420 
Years Active: 1976-1978
Title: Jiro Sakai - Innovator in Operation State Display Technology
Introduction
Jiro Sakai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of operation state display technology, holding a total of 3 patents. His work has been instrumental in enhancing the functionality and efficiency of various control systems.
Latest Patents
One of his latest patents is the Operation State Display Apparatus. This apparatus includes a counter that receives input signals representing the individual operation states of a controlled object. It counts the duration of the ON and OFF states of the input signal. Additionally, a memory device is incorporated to memorize the time lapse from an operation initiation reference time when the input signal transitions between states. A display device presents the operation state of the controlled object in a time chart format, utilizing data from both the counter and memory device. The reference operation state can also be displayed.
Another significant patent is the Sequence Block Display System. This system is designed for use in programmable logic controllers, where the control sequence for a machine tool is stored in a memory unit. The controlled object operates automatically in a predetermined sequence based on the stored control sequence. The display system shows a sequence block derived from the control sequence in the form of a sequence diagram, which includes symbols of control elements like relays. This system can automatically obtain and display necessary sequence blocks, as well as the states of control elements, such as the on-off states of relay contacts.
Career Highlights
Jiro Sakai has worked with prominent companies such as Nissan Motor Company Limited and Mitsubishi Electric Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Throughout his career, Jiro has collaborated with notable individuals, including Nobuharu Yamauchi and Masaji Matsumura. These collaborations have further enriched his work and innovations in the field.
Conclusion
Jiro Sakai is a distinguished inventor whose contributions to operation state display technology have made a lasting impact. His patents reflect his commitment to advancing control systems, and his collaborations with industry professionals highlight his role in fostering innovation.