(under subclass 101) Process wherein the meeting faces are heated to a prescribed temperature below the melting point and are subjected to intimate engagement such that the molecules of one face intermix with those of the other face.
(1) Note. A solid filler material may or may not be used in the process of this subclass; however, the filler is heated up to but below its melting point and/or any molten filler produced during the process must be substantially absorbed by the work parts to fall within the scope of this subclass.
(2) Note. Most of the patents including a claim proper for this subclass include specific reference to the time period of exposure of the meeting faces to heat and pressure; e.g., the parts will be subjected to heat and pressure for approximately half hour.
