Dividing a Trimmed Surface

Hi, 

I would like to divide a trimmed surface into an even grid of smaller surfaces. In the definition below I have managed to project a preliminary grid onto the surface, though this merely acts as a representation of the divisions required. 

The aim is to divide the conical surface into a grid of surfaces (which have the same overall geometry) yet can be controlled independently. I am not sure whether the easiest way to achieve this is to find the corner points for each grid 'section' and create a new surface from those points, aligned to the original surface or to use a surface frames component and try to use the frames / points to estimate new surfaces. 

Any help would be greatly appreciated, definition and screenshot attached. 

Thanks, Tom