How to find the date and time of weblogic patch applied

How to find when is the last time patch applied in weblogic product

To find out when is the last time weblogic patch applied on the server or to know the date/time of the patch applied recently

1) Go to <installation_dir > , if you dont know how to find the weblogic installation dir, follow the link How to find weblogic home directory

2) Go to <installation_dir>/Opatch folder

3) Execute the command ./opatch lsinv | grep -i applied

4) It will list out the patches applied along with date