Enter the patent office prefix, e.g. US or EP or WO.
and then the patent application number or patent number
The patent office prefix is:
US for US patents/applications
EP for European patents
WO for published PCT applications
PCT for PCT applications
Go to "Batch Download" if you have multiple patents to download
Use these sites to perform a keyword search of published patents. e.g. piezoelectric, transistor, gasket, mesothelioma, etc
Examples:
US patent 6,907,404 is entered as us6907404
US patent publication 2004/0215708 is entered as us2004/0215708
US patent application 10/447,493 is entered as us10/447493
European application EP 1 661 800 is entered as ep1661800
WIPO publication WO 2004/057274 is entered as wo2004057274