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This paper details the development of Cool Particulate Regeneration™, CPR™, an ultra-efficient non-thermal active particulate filter regeneration technology for gasoline and diesel particulate filters. In the technologies simplest form, mechanical two-way regeneration valves are sequentially and in rapid succession pneumatically actuated to induce a reverse flow filter cleaning. Their operation generates exhaust pressure by sealing off the exhaust system preventing filtered engine exhaust from exiting the tailpipe. The filtered and pressurized gases are then released to a separate low pressure particulate matter (PM) reservoir upstream of the filter. The reverse flow of high pressure filtered exhaust gases pass back though the filter physically dislodging the particulate and transporting it to the low pressure storage chamber. Innovative utilization of the particulate matter is discussed. CPR has undergone bench testing and two generations of research and development.