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 by the European agency in the last two years;
2.WO database, patent literature data published by WIPO in the last two years.
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 * *.