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Class Information
Number: 156/46
Name: Adhesive bonding and miscellaneous chemical manufacture > Methods > Plaster board making > With subsequent treatment of plaster board > Perforating
Description: Processes in which the modification is the formation of an aperture.

Patents under this class:

Patent Number Title Of Patent Date Issued
8147629 Ceiling tile construction Apr. 3, 2012
5151130 Amine-based consistency reducers for gypsum stucco slurries Sep. 29, 1992
4614553 Method of manufacturing acoustic panels for controlling reverberation of sound in enclosed environments Sep. 30, 1986
4495235 Process for the preparation of fiber-reinforced flat bodies containing a hardenable binder Jan. 22, 1985
3954543 Label applicator May. 4, 1976

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