Patent retrieval system of China Patent Information Center.
3. Unlimited patent network patent retrieval platform
4. Chinese and foreign patent database of National Science and Technology Library
50,000 square meters patent technology database 1. 1. ⒈esp@cenet website
The world patent database contains patent description data of 72 countries and organizations, English abstracts of 33 countries and organizations and full-text patents of 32 countries and organizations, with a literature volume of 45 million articles.
13. 13. WIPO patent database, which contains descriptive data, abstracts and full-text descriptions of PCT international applications published within 24 months.
2. European patent database, including descriptive data, abstracts and full-text descriptions of European special applications published within 24 months. Patent retrieval system of the United States Patent and Trademark Office.
4. Search the granted patents.
13. Apply for public search.