My questions were motivated by definition #4 in the patent which refers to deuterating the crystal, but it is clear (I think) from the context that this is still just as part of proposed small, conventional (hot) impact fusion - not really cold fusion, at all. Fusion is not claimed to take place within the deuterated crystal.
So I think their claims strictly cover conventional fusion, and will not relate to CF/LENR in any way, unless the pyroelectric crystals can be mixed in with, or coated on, say Ni or Pd to catalyze more intense CF/LENR reactions, since these crystals can generate intense, localized EM-fields (> 25 V/nm).
