Permedia and GLint were chips from 3Dlabs. They were a british company, I remember working with these chips around 1996, so it's been a while. They are not in the graphics cards business anymore:

"On February 24th 2006, 3DLABS refocused its business and stopped developing its workstation graphics cards for the PC and announced it would focus on its new DMS(TM) low-power media-rich application processors." ... http://www.3dlabs.com/content/Legacy/