THE MOUSE THAT ROARED. A small company has received a big patent covering financial transactions from home computers. While industry giants have bickered over who's on first in home banking, shopping, entertainment, etc., Online Resources & Communications Corporation of Fairfax, Va., has received what appears to be an enormously broad patent covering financial transactions made from home computers. "The patented payment process potentially applies to a wide range of nonbanking services, from pay-per-view television to stock trading done from home terminals." (New York Times 8/9/93 C2)