I've posted about this a few times on here, but Merck is pretty damn picky in its recruiting, generally only recruiting from top tier schools in the various scientific disciplines we hire into (I don't know as much about the business/sales side, but assume it's similar there) - and those schools vary a bit between disciplines. I know eng'g recruiting extremely well, having been the lead for all eng'g recruiting at RU for the past 12 years and being one of the co-leads for our overall eng'g recruiting program at Merck. I know chemistry recruiting pretty well, since we work very closely with chemists.
So, in eng'g and especially chem eng'g (probably 75% of our engineers are chem engineers, since we manufacture chemicals and biochemicals), we recruit from top tier eng'g schools like MIT, Michigan, Cal, Princeton, Cornell, Delaware, NC State, Ga Tech, PSU, UVA, Penn, Purdue, and Villanova - that's a somewhat national list, but we also try to focus on the NE, too, since most of our engineers work in NJ/PA. In eng'g maybe 30-40% of our new hires have PhDs with the rest being mostly BS level.
And while RU is not rated quite as highly as those schools, we recruit engineers heavily from RU, since it's a very good school, close to the top tier schools and it's so close and we've done so well with RU grads - in fact, of our 8 person senior staff, half of us have RU degrees, including my boss, our department head (about 125 people), and there are probably 10-12 RU grads in the dept - so even though there's some occasional snobbery, I always say to look at the results.
In chemistry, the top schools we recruit from are Harvard, Stanford, Princeton, Cal, Northwestern, MIT, Oxford, Wisconsin, Cambridge and a few others. We do recruit from RU, but not nearly as heavily as from those other schools. And 95% of the people hired into chemistry (and the other "hard" sciences, like biology, biochemistry, materials science, etc.) have PhDs and most of those have finished post-docs somewhere with someone very well known in those fields. The pedigree tends to matter more in those areas than eng'g.
Hope that helps.