Substrate-free colored plate-like particles
Conventional pearl pigments were created by coating mica substrates with metal oxides, such as TiO₂. The traditional production process involved two main steps: preparation of the mica substrate and coating with metal oxides. This conventional method made it challenging to control the thickness of the metal oxide layer precisely, making it difficult to achieve stable pearlescent properties and control the hue. As a result, the process was often costly. This patent introduces a method for producing pearl pigments that exhibit pearlescent properties through a simple and cost-effective process. The pigments comprise vanadium phosphate hydrates and possesses a substrate-free colored plate-like particles. It is possible to provide a strong glossy effect using the pigment with large particle sizes.
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The revenue generated from technology transfer is reinvested into universities and researchers as new research funding, which is used to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will actively promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by concluding basic technology transfer agreements with the following universities (as of April 1, 2026): - Tohoku University - Hirosaki University - Iwate University - Akita University - Fukushima University - Yamagata University - Tohoku Gakuin University - Iwate Medical University - Fukushima Medical University - Aizu University - Miyagi University - Hokkaido University - Muroran Institute of Technology - Showa Medical University - Asahikawa Medical University
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