Publications in Open Access (OA) are digitized. They are available online and free of charge and free of most copyright laws and licensing restrictions. OA is also a global movement bringing together many groups of users such as researchers, students, librarians, cultural workers or publisher.

Search engines of Open Access resources:

We suggest using Google Patents search engine, which indexes patents and patents applications registered by United States Patent and Trademark Office (USPTO). Database ensure access to full texts of over 8 milion patents.