This inventor holds 2 USPTO granted patents. Top assignee: Matsui Shikiso Chemical Co., Ltd.. Active years: 1999-2001.
Company Filing History:
Years Active: 1999-2001
Title: Innovations by Ryuichi Hoshikawa in Luminous Pigments and UV Inks
Introduction
Ryuichi Hoshikawa, a notable inventor located in Kyoto, Japan, has made significant contributions to the fields of material science through his innovative patents. With a total of two patents to his name, Hoshikawa has focused his research on developing advanced pigments and materials that respond to specific environmental conditions.
Latest Patents
One of Hoshikawa's latest patents is focused on a process for preparing water-resistant luminous pigments. This innovative method involves using an oxide matrix that incorporates elements such as magnesium, calcium, strontium, barium, and zinc, combined with rare-earth metal elements. The process includes an acid treatment with a pH of not more than 3, followed by an alkaline treatment at a pH of 4-9. This technology enhances the durability and resistance of luminous pigments, making them suitable for various applications.
Another notable patent by Hoshikawa pertains to ultraviolet hardening type ink compositions that exhibit a temperature-sensitive color change. This invention aims to deliver UV inks that maintain excellent printing strength while showcasing light resistance properties. The formulation incorporates microcapsules tailored for a temperature-sensitive color change and a photopolymerization initiator comprised of specific compounds, thus providing superior performance characteristics.
Career Highlights
Hoshikawa is currently employed at Matsui Shikiso Chemical Co., Ltd., a company recognized for its advancements in chemical products, including inks and coatings. His role is pivotal in driving innovation within the company, particularly in the research and development of new materials.
Collaborations
In his pursuit of technological advancement, Ryuichi Hoshikawa collaborates with his coworker, Yosuke Kitagawa. Together, they work on enhancing the functionality and performance of materials, ensuring that their innovations meet the evolving demands of their industry.
Conclusion
Ryuichi Hoshikawa stands out in the realm of inventors with his groundbreaking work on luminous pigments and UV ink compositions. His patents are a testament to his commitment to innovation and excellence, reflecting a deep understanding of material properties and their applications in modern technology. As he continues to work at Matsui Shikiso Chemical Co., Ltd., the future promises even more groundbreaking inventions from this esteemed inventor.