Location History:
- Chiba, JP (1989)
- Isumi, JP (1991)
- Isumi-gun, JP (2002)
Company Filing History:
2 out of 42,488 
1 out of 4 
1 out of 832,718 Years Active: 1989-2002
Title: Terutoshi Ichihara: Innovator in Cathode Ray Tube Technology
Introduction
Terutoshi Ichihara is a notable inventor from Isumi-gun, Japan, recognized for his contributions to cathode ray tube technology. He holds a total of 3 patents, showcasing his innovative spirit and technical expertise in the field.
Latest Patents
Ichihara's latest patents include a cathode ray tube featuring an improved indirectly heated cathode. This invention comprises a phosphor screen and an electron gun, which includes an indirectly heated cathode structure and multiple grid electrodes arranged in an axially spaced manner. The cathode structure is designed with a base metal that has an electron emissive material coating, along with a heater that heats the base metal. The heater consists of a major heating portion with a spirally wound heating wire and leg portions at the ends, each containing a first multilayer winding portion and a second multilayer winding portion. The major heating portion and part of the second multilayer winding portion are insulated, and the heater is connected to electrical conductors for voltage application.
Another significant patent is for a heater designed for an indirectly-heated cathode with a double helical structure. This heater features a removable film placed between adjacent portions of a helical core wire, which is coated with an insulating layer. This innovative design prevents cracks in the insulating layer, maintaining the insulating properties between the heater and the cathode sleeve, while also preventing clogging of the electron beam aperture in a shadow mask.
Career Highlights
Throughout his career, Ichihara has worked with prominent companies, including Hitachi, Ltd. His experience in these organizations has contributed to his development as an inventor and innovator in the field of electronics.
Collaborations
Ichihara has collaborated with notable coworkers such as Sachio Koizumi and Toshio Kawashima. Their collective efforts have likely influenced the advancements in cathode ray tube technology.
Conclusion
Terutoshi Ichihara's work in cathode ray tube technology exemplifies his innovative contributions to the field. His patents reflect a deep understanding of electronic components and their functionalities. His career and collaborations further highlight his impact on the industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.