R&D Expenses and Patents

I put this together just for fun. I can't guarantee the accuracy. Patents acquired instead of generated in-house are not included.

As a percentage of revenue, Apple's R&D expense looks puny. And it looks like Microsoft Research is our modern day Xerox PARC lab, just what Nathan Myhrvold wanted.

(source: USPTO and Google Finance)

* Oracle: including Sun Microsystems patents.