Location History:
- Yokohama, JP (1987 - 1999)
- Kanagawa-ken, JP (1999)
Company Filing History:
15 out of 90,594 
9 out of 297 Years Active: 1987-1999
Title: The Innovative Contributions of Motoo Kumagai
Introduction
Motoo Kumagai is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of electronics, holding a total of 15 patents. His work primarily focuses on ceramic substrates and light blocking apparatuses for cameras, showcasing his expertise in advanced materials and optical technologies.
Latest Patents
Kumagai's latest patents include innovative designs for ceramic substrates, circuit substrates, and electronic circuit substrates. One of his notable inventions is a ceramic substrate that features two or more functional portions separated from each other. This design incorporates a first region made of a first dielectric porcelain with an insulating layer at the crystal grain boundaries of a semiconductor porcelain. The second region consists of a second dielectric porcelain with a different dielectric constant, achieved through variations in the amount or type of semiconductivizing agent used. Additionally, he has developed a light blocking apparatus for cameras, which includes a fixed first mirror that reflects and transmits light. This apparatus features a second mirror that can move between a non-exposure position and a mirror-retracted position, along with a light blocking member that operates in conjunction with the second mirror's movement.
Career Highlights
Throughout his career, Kumagai has worked with notable companies such as Canon and Nippon Oil & Fats Co. Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in the electronics sector.
Collaborations
Kumagai has collaborated with several talented individuals, including Keiichi Kato and Michiaki Sakaguchi. These partnerships have further enhanced his ability to innovate and develop cutting-edge technologies.
Conclusion
Motoo Kumagai's contributions to the field of electronics through his patents and collaborations highlight his role as a significant inventor. His work continues to influence advancements in ceramic substrates and optical technologies, making a lasting impact in 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.