"...The term "tampered dosage form" is defined for purposes of the present invention to mean that *****the dosage form has been manipulated by mechanical, thermal, and/or chemical means which changes the physical properties of the dosage***** for, e.g., to liberate the opioid agonist forimmediate release if it is in sustained release form, or to make the opioid agonist available for inappropriate use such as administration by an alternate route, e.g., parenterally. The tampering can be, e.g., by means of crushing, shearing, grinding, chewing, dissolution in a solvent, heating, (e.g., greater than about 45.degree. C.), or any combination thereof. ..."

http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=...

Good luck from Oso ¶:^)