Satoyama Coat Patent
2026-07-23 22:32:24

Innovative Eco-Friendly Wallpaper 'Satoyama Coat' Receives Patent for Air Purification Technology

Revolutionary Air-Purifying Wallpaper: Satoyama Coat



In a significant development for eco-friendly home improvement, Hard Protect Inc., headquartered in Yokohama, has recently announced the receipt of a patent for their innovative indoor coating material, ‘Satoyama Coat’. This groundbreaking product utilizes over 99% natural components derived from traditional plants such as Japanese knotweed, mugwort, persimmon leaves, and tea trees. This unique formulation has garnered recognition from the Japan Patent Office, affirming the company’s commitment to contributing to health and enhancing quality of life through improved indoor environments.

Patent Overview


The invention, classified as a water-based coating composition for wallpaper, carries the patent number 7882545, with registration dated June 22, 2026. This accomplishment not only highlights the company’s commitment to sustainable practices but also assures consumers and partner enterprises of the exceptional quality and reliability of the product.

Collaborative Efforts Behind the Innovation


Over the past several years, Hard Protect has prioritized rigorous research and development, collaborating with academic institutions and major corporations to perfect the technology behind Satoyama Coat. This extensive partnership has culminated in a product that stands out in a market flooded with imitations, backed by verifiable evidence from esteemed testing organizations.

The patent granted is not only a milestone for Hard Protect but also a strong testament to the efficacy of their technology, prompting trust and confidence among national partner companies engaged in sales and installation. As the company anticipates future collaborations, they believe this official recognition will facilitate smoother operations for new potential partners considering their offerings.

Distinctive Features of Satoyama Coat


1. Zero Energy Operation: Satoyama Coat operates continuously without the need for devices or power sources, functioning around the clock to absorb, decompose harmful substances (VOCs), and provide antibacterial and deodorizing effects, independent of light or time of day.
2. High Adhesion and Safety with CNF Integration: The product incorporates cellulose nanofiber (CNF), derived from natural plant pulp, creating a water-dispersible solution known as ELLEX-S. This innovative fusion enhances safety and ease of application, effectively minimizing the use of chemical ingredients.
3. Maintenance-Free Longevity: Designed for durability, Satoyama Coat can last around ten years due to its unique application method which employs direct painting rather than spraying, allowing it to consistently foster fresh air.

Vision for Future Expansion


Hard Protect views this patent acquisition as a true starting point rather than an endpoint. With the goal of expanding outreach, they intend to increase the implementation of Satoyama Coat in various environments, building upon successful deployments in venues like the Ginza Paper Pulp Hall and nursing facilities in Miyagi Prefecture.

The commitment to improving indoor air quality remains a driving force as Hard Protect aims to enhance lives nationwide through innovative, nature-derived solutions.

Company Profile


  • - Name: Hard Protect Inc.
  • - CEO: Yuichiro Ito
  • - Location: 1-16-1 Shinyamashita, Naka-ku, Yokohama, Japan
  • - Business Focus: Enhancing indoor environments through natural plant-derived components and various coating technologies.
  • - Official Website: satoyamacoat.com

For more specific details regarding the patent, please visit J-PlatPat.

If you have inquiries, please reach out to Yuichiro Ito at Hard Protect Inc. via telephone: 045-228-8061 or email: [email protected] (business hours: weekdays 9:00 AM to 6:00 PM).


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Topics Consumer Products & Retail)

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