when search for an installed edir patch I use:
# zypper se edirectory

Than I found some available patches the lines have a leading 'i' so it seems
the patches are installed.

Now I want to get more details and add -s to my zypper line:
# zypper se -s edirectory

Than I get the same result. But the difference is that no leading 'i' is

How I can check which patches are installed sure?