Location History:
- Yokohama, JP (1992 - 1996)
- Machida, JP (1993 - 1997)
Company Filing History:
Years Active: 1992-1997
Title: Shigenori Kumagai: Innovator in Photochromic Technology
Introduction
Shigenori Kumagai is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of photochromic technology, holding a total of 6 patents. His work focuses on developing innovative solutions that enhance color rendering and ultraviolet protection.
Latest Patents
One of his latest patents is a photochromic color rendering regulatory composition and cosmetics. This invention features an inorganic compound with photochromic properties that adjusts the color of the composition and cosmetics based on light intensity. As a result, the products can maintain a consistent color rendering, appearing whiter in bright light and darker in dim conditions. Another notable patent is a method and apparatus for measuring ultraviolet protection effectiveness. This invention allows for the calculation of an SPF value that correlates highly with in vivo SPF values, using a common calculation equation regardless of the material type. The method involves correcting transmitted UV intensities and calculating an erythema-inducing UV intensity, ultimately determining the SPF value based on empirical equations.
Career Highlights
Shigenori Kumagai is currently employed at Shiseido Company, Limited, a leading cosmetics manufacturer known for its commitment to innovation and quality. His work at Shiseido has allowed him to explore and develop groundbreaking technologies in the cosmetics industry.
Collaborations
Throughout his career, Kumagai has collaborated with notable colleagues, including Kazuhisa Ohno and Susumu Takada. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Shigenori Kumagai is a distinguished inventor whose work in photochromic technology has made a significant impact in the cosmetics industry. His innovative patents reflect his dedication to enhancing product performance and consumer experience.
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.