Location History:
- Kitamoto, JP (2007)
- Saitama, JP (1994 - 2021)
- Kita-adachi-gun, JP (2018 - 2021)
Company Filing History:
Years Active: 1994-2025
Title: Yasuo Umezu: Innovator in Light-Emitting Technologies
Introduction
Yasuo Umezu is a prominent inventor based in Kita-adachi-gun, Japan. He has made significant contributions to the field of light-emitting devices, holding a total of 9 patents. His work focuses on enhancing the efficiency and color reproducibility of image display technologies.
Latest Patents
One of Umezu's latest patents is for a light-emitting device and image display apparatus. This invention aims to inhibit or prevent the deterioration of a light conversion layer while achieving high luminous efficiency and color accuracy. The device includes a pair of electrodes and an electroluminescent layer, with a light conversion layer that contains multiple pixels. These pixels convert light emitted from the electroluminescent layer, which has a blue emission spectrum, into light of different wavelengths. The light conversion layer features pixels of the three primary colors: red, green, and blue, and incorporates light-emitting nanocrystals that emit in these colors.
Another notable patent involves a dispersion and inkjet ink composition, which includes light-emitting nanocrystals and a polymeric dispersant. This dispersion is designed to respond to external stimuli, enhancing the functionality of liquid crystal display elements.
Career Highlights
Throughout his career, Yasuo Umezu has worked with notable companies such as Dic Corporation and Dainippon Ink and Chemicals, Incorporated. His experience in these organizations has contributed to his expertise in developing innovative light-emitting technologies.
Collaborations
Umezu has collaborated with several professionals in his field, including Kiyofumi Takeuchi and Shinji Ogawa. These partnerships have likely enriched his research and development efforts.
Conclusion
Yasuo Umezu's contributions to light-emitting technologies have positioned him as a key figure in the industry. His innovative patents reflect a commitment to advancing image display technologies and improving their efficiency and color quality.
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.