1, quick search 1, quick search: there are only 1 search items, but you can choose from two search fields;
2. Advanced search: there are 10 search items.
3. Number search: only 1 search items.
There are three kinds of databases in espcenet retrieval system:
1, EP database: patent literature data published for the European agency;
2.WO database, patent literature data published by WIPO.
3. Database of patent literature data published in more than 70 countries around the world.
(a) espcenet quick search function: one search item and two search field options: invention name or abstract applicant or inventor.
(2) espcenet number retrieval features: one retrieval item: application number, WeChat official account, priority number including family option 9.
(3) espcenet advanced retrieval strategy: And or not double quotation mark "washing machine" wildcard, and, representing characters of any length, 0 or 1 character and 1 character respectively. Non-patent literature XP serial number name format: last name, first name, middle name, 10 retrieval strategy: input letters are case-insensitive, and each field can only input up to 4 items. All search fields are a * *.