if rambus actually made this product and used it, then what is the problem, it is okay to just take someone else's idea and use it, and make money from it.
i thought in order to get a patent you had to have a working version?
To get a patent you just need to provide a 1 paragraph explanation of what the thing does and a very basic sketch of the object.
Where patents are bad is when they are for items that follow a logical conclusion to a series of events. Sure you should get the jump on others but not forever, a patent should only last 3-5 years then go open to the public. If it took you more then 3 years to go from paper to production you were not even trying.