This inventor holds 5 USPTO granted patents. Top assignees: Hitachi, Ltd., Nippon Hoso' Kyokai. Active years: 1979-1991.
Company Filing History:
5 out of 42,719 
2 out of 382 
Years Active: 1979-1991
Title: Shigeru Ehata: Innovator in Image Pick-Up Technology
Introduction
Shigeru Ehata is a notable inventor based in Mobara, Japan. He has made significant contributions to the field of image pick-up technology, holding a total of 5 patents. His work has advanced the understanding and functionality of image pick-up tubes, which are essential components in various imaging systems.
Latest Patents
Among his latest patents, Shigeru Ehata has developed a method of fabricating an image pick-up tube and a target section used therein. This invention includes a target that features at least a conductive film and a photoconductive film on a substrate for photo-electric conversion. The signal from the target section is read by an electron beam scanning system. Notably, part of the surface area outside the effective scanning region of the electron beam scanning side of the target section is formed of a secondary electron emission dampening layer. Another significant patent is for an electron gun that includes a thermionic cathode for emitting an electron beam. This design features a grid with a first aperture for controlling the diameter of the electron beam and an anode with a second aperture for catching part of the electron beam that has passed through the first aperture. The configuration allows for the generation of a laminar flow electron beam with a constant current density.
Career Highlights
Shigeru Ehata has worked with prominent companies such as Hitachi, Ltd. and Nippon Hoso Kyokai. His experience in these organizations has contributed to his expertise in the field of imaging technology.
Collaborations
Throughout his career, Shigeru has collaborated with notable individuals, including Masakazu Fukushima and Masanori Maruyama. These collaborations have likely enriched his work and led to innovative advancements in his projects.
Conclusion
Shigeru Ehata's contributions to image pick-up technology through his patents and collaborations highlight his role as a significant inventor in this field. His work continues to influence advancements in imaging systems and technology.