I dont know how up to date the following info is but it may be of help.
The following site has the makers of oil filters and other things:
http://www.tourtimemedia.com/fzr/
Click on "Dont be a sucker" on the left to find the info.Keep in mind that he is talking of filters to fit a motorcycle,however,this may hold true for some automotive filters too.
"Delphi makes: ACDelco, Amoco,
Atlas , BlueStar, Delkor, Double Eagle, Dura-Power, Ford, Freedom, IntelleGuard, Sams Club, Shell, Western Auto, Advance Auto, International, Dynavolt and dozens of others"
[ May 21, 2005, 01:04 PM: Message edited by: motorguy222 ]