Location History:
- Tokyo, JP (2019 - 2020)
- Kanagawa, JP (2020 - 2023)
Company Filing History:
3 out of 13,247 
2 out of 16,453 
Years Active: 2019-2023
Title: Yu Kumagai: Innovator in Solar Energy Technologies
Introduction
Yu Kumagai is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of solar energy, holding a total of 5 patents. His work focuses on innovative technologies that enhance the efficiency and effectiveness of solar cells and light energy conversion elements.
Latest Patents
One of his latest patents involves a solar cell that includes a first electrode, a second electrode, a photoelectric conversion layer located between the first and second electrodes, and a semiconductor layer situated between the first electrode and the photoelectric conversion layer. Notably, at least one of the electrodes is translucent, and the semiconductor layer contains a compound made up of sodium (Na), zinc (Zn), and oxygen (O). Another significant patent is for a multi-junction light energy conversion element, which includes a material with a suitable band gap for a light energy conversion layer positioned upstream in the light's incidence direction. This invention comprises a first light energy conversion layer containing strontium zinc nitride (SrZnN) and a second layer containing a light energy conversion material with a narrower band gap than SrZnN.
Career Highlights
Yu Kumagai has worked with notable companies such as Panasonic Intellectual Property Management Co., Ltd. and Panasonic Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in the realm of solar energy technologies.
Collaborations
Throughout his career, Kumagai has collaborated with talented individuals, including Fumiyasu Oba and Ryosuke Kikuchi. These partnerships have contributed to the advancement of his projects and the successful development of his patents.
Conclusion
Yu Kumagai is a key figure in the field of solar energy innovation, with a focus on developing advanced technologies that improve energy conversion efficiency. His contributions through patents and collaborations highlight his commitment to sustainable energy solutions.
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.