This inventor holds 2 USPTO granted patents and 2 published patent applications. Top assignee: Toppan Holdings Inc.. Active years: 2025-2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2025-2026
Title: Ryuji Shiraishi - Innovator in Light Control Technology
Introduction
Ryuji Shiraishi is a prominent inventor based in Tokyo, Japan. He is known for his innovative contributions to light control technology. With a focus on enhancing the functionality of transparent materials, Shiraishi has made significant strides in the field of optical engineering.
Latest Patents
Shiraishi holds a patent for a light control window. This invention features a light control sheet that includes an adhesive layer attached to a transparent material. The light control layer, which can switch between a transparent and opaque state depending on the applied voltage, is also part of this innovative design. Notably, the light control window is engineered to absorb part of the visible light spectrum, ensuring that transmittance is 10% or less for light with a wavelength of 420 nm or less. Additionally, light passing through the window from a standard light source D65 maintains a yellowness index YI of 10 or less, adhering to the JIS K 7373: 2006 standard.
Career Highlights
Ryuji Shiraishi is currently associated with Toppan Holdings Inc., where he continues to develop and refine his inventions. His work at Toppan has allowed him to collaborate with other experts in the field, further enhancing the impact of his innovations.
Collaborations
Due to space constraints, details about specific collaborations will not be included.
Conclusion
Ryuji Shiraishi's contributions to light control technology exemplify the innovative spirit of modern inventors. His patent for the light control window showcases his commitment to advancing optical materials and their applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile