It has been rumoured over time that the fuel industry has purchased from inventors, processes which would supply cheaper or more efficient fuel products. Products which, if produced, would reduce the fuel industries profits. Now would be a good time for these procecces to be used, although it is possible the fuel industry would be censured or accused of 'profitering'.

Has anybody been looking through old/expired patents to find possible 'gems' with regards to procedures/processes that assist in fuel production, including reversing the oil to plastics set-up, with reasonable financial savings.  Or even modifying such processes, so that they are even remotely affordable, as well as being remotely environmental.