Hi, I developed the following query to extract the annual number of nanotech patents whose first inventor is Chinese. SELECT count(*) FROM (SELECT t207.person_id, t207.appln_id FROM tls207_pers_appln AS t207 WHERE (t207.appln_id IN (SELECT t201temp.appln_id FROM (SELECT t201.appln_id FROM tls201_app...

Hi, Previously I used the Advanced Search service on Espacenet and the search page only has "Publication Date." When I started to use PATSTAT online, I wonder how should I select the proper 'date' to get a similar output as the Espacenet results? For example, if my Espacenet query is DB=EP...