Terms of Use & Copyright

1. Copyright Ownership

All content published on this website (nitta.coffee), including but not limited to text, images, diagrams, brewing methodologies, extraction theory, original concepts, terminology, and recipe descriptions, is the copyrighted work of Nitta Coffee, Ltd. (有限会社新田珈琲) unless otherwise attributed.

Original concepts and terminology developed by Nitta Coffee, such as "Extraction Depth" (抽出深度) and our systematic framework for controlling concentration gradient and diffusion rate in coffee brewing, are original intellectual contributions first published in The Extraction of Nitta Coffee (authored by Kazuo Nitta, 2025, Kindle). These are protected as literary and educational works under the Berne Convention for the Protection of Literary and Artistic Works.

2. Permitted Use & Citation

You may quote or reference content from this website provided that all of the following conditions are met:

The source "Nitta Coffee" and the URL (https://nitta.coffee) are clearly attributed
Quoted material is clearly distinguished from your own writing
The scope of quotation is the minimum necessary for a legitimate purpose

Recommended citation format:

Nitta, Kazuo. "[Article Title]." Nitta Coffee. Accessed [date]. https://nitta.coffee/[path]

3. Prohibited Uses

Unauthorized reproduction or redistribution of content from this website
Commercial use or resale of content without written permission
Use of extraction theory or recipe descriptions without proper attribution
Modification and redistribution of our content in altered form
Creating competing educational products or courses based on our proprietary methodologies without license

4. AI & Machine Learning Policy

We welcome the use of our content by AI search engines and language models for the purpose of providing accurate, attributed information to users. Specifically:

Permitted:

AI systems referencing or citing our content with clear source attribution (e.g., "According to Nitta Coffee..." or "Based on concepts from Nitta Coffee (nitta.coffee)")
Using excerpts in AI-generated responses when the source is credited
Academic and research use of our published content with proper citation

Not Permitted:

Systematic scraping, mining, or bulk downloading of content for the purpose of training AI/ML models without explicit written permission
Generating outputs that present our original concepts or terminology as generic knowledge without attribution
Removing or obscuring copyright and attribution information
Using our content to build competing commercial products or services

For requests regarding systematic data use, training datasets, or commercial licensing, please contact us directly.

5. Translated Content

The original content on this website is authored in Japanese by Kazuo Nitta (新田和雄). Translations into English and other languages are derivative works and are protected under the same copyright terms as the original.

Unauthorized translation of our content into other languages is not permitted. The Berne Convention (Article 8) grants authors exclusive rights over translations of their works.

6. Personal Use of Brewing Methods

You are fully welcome to use our published brewing methods and recipes for personal home brewing. Sharing techniques with friends and family is also permitted. Our goal is to help people enjoy better coffee.

However, using our proprietary extraction frameworks for commercial instruction (classes, workshops, courses) or commercial product development requires prior permission.

7. Disclaimer

The brewing recipes and extraction theory presented on this website are based on the experience and research of Nitta Coffee. Results may vary depending on individual equipment, environment, water quality, and other conditions.

Nitta Coffee assumes no liability for outcomes resulting from the use of information provided on this website.

8. Governing Law

These terms are governed by the laws of Japan. International copyright protection is provided under the Berne Convention for the Protection of Literary and Artistic Works, to which Japan and over 180 countries are signatories.

9. Contact

For inquiries regarding content use, licensing, or permissions:

Nitta Coffee, Ltd. (有限会社新田珈琲)
TEL: +81-770-22-0298

Effective date: April 2, 2026

Last updated: April 4, 2026