30 April 2008
On inputs, which are lying in stock or in process or are included in final product, on date when final product cease to be exempted goods or become excisable, cenvat is allowed.
CCR 2004, clause 3(2)
As after registration final product will become excisable, so i think cenvat on input (lying in above conditions) should be available.
02 May 2008
See ruling given by bomaby cegat in CCE v.s thermax which clarifies that you can take credit on cap goods even if the prmises was not registered Matter covered under rule 3is only for inputs.