(under the class definition) Processes in which fibrous or laminated mineral material (e.g., mica, asbestos, etc.) is the material being comminuted or disintegrated.
(1) Note. This subclass includes physical steps of separation of the laminations of material when combined with the comminuting or disintegrating step.
(2) Note. See FIBROUS AND LAMINATED MATERIAL of the class definition of this class for notes to related art and a statement of the lines followed with other classes relative to fibrous or laminated mineral material.
SEE OR SEARCH CLASS
19, Textiles: Fiber Preparation,
.56, for methods of and means for opening bundles of substantially parallel stapled fibers in combination with a stapilizing step or device, and subclasses 66 and 80+ for fiber mass opening processes and apparatus of general application.
125, Stone Working, 23.01+, for processes and apparatus for splitting mineral laminated material without comminution.
252, Composition,
378, for processes of exfoliating or expanding mineral laminated material where no comminution or disintegration is involved or processes in which comminution or disintegration is a step, but including operations not provided for in this class (241).
264, Plastic and Nonmetallic Article Shaping or Treating: Processes, appropriate subclasses, see reference in the class definitions of this class (241), COATING OR SHAPING OF MATERIAL, B.
432, Heating,
13, for a heating process including a melting, expanding or comminution step.
