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Class Information
Number: 156/45
Name: Adhesive bonding and miscellaneous chemical manufacture > Methods > Plaster board making > With subsequent treatment of plaster board
Description: Processes in which the unitary body formed by the association of the facing sheets and core material is thereafter subjected to a chemical and/or mechanical modification.

Sub-classes under this class:

Class Number Class Name Patents
156/46 Perforating 5

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8685188 Apparatus and method for fractionating gypsum slurry and method of producing gypsum board Apr. 1, 2014
8568544 Water resistant cementitious article and method for preparing same Oct. 29, 2013
8530064 Mold-inhibiting method and composition comprising dehydroacetic acid or salt thereof Sep. 10, 2013
8413333 Method for making an asymmetrical concrete backerboard Apr. 9, 2013
8277586 Production process for hydraulic binder-based boards with four tapered edges, production line of such boards Oct. 2, 2012
8147629 Ceiling tile construction Apr. 3, 2012
8137490 Process of manufacturing cement based armor panels Mar. 20, 2012
8128767 Process for manufacturing gypsum board faced with non-woven glass fiber mat Mar. 6, 2012
8092858 Gypsum panel having UV-cured moisture resistant coating and method of making same Jan. 10, 2012
8070895 Water resistant cementitious article and method for preparing same Dec. 6, 2011
8038915 Panel smoothing process and apparatus for forming a smooth continuous surface on fiber-reinforced structural cement panels Oct. 18, 2011
7927420 Light weight metal fire door core Apr. 19, 2011
7877953 Process for sticking edging material onto lightweight building boards and a lightweight building board produced by means of said process Feb. 1, 2011
7431783 Method and apparatus for production of plaster plates having 4 tapered edges Oct. 7, 2008
7393424 Gypsum composition Jul. 1, 2008
7381261 Expanded perlite annealing process Jun. 3, 2008
7223311 Method and apparatus for fabricating gypsum board May. 29, 2007
7037572 Trough-edge building panel and method of manufacture May. 2, 2006
6893752 Mold-resistant gypsum panel and method of making same May. 17, 2005
6878321 Method of manufacture of glass reinforced gypsum board and apparatus therefor Apr. 12, 2005
6682617 Method for making wallboard or backerboard sheets including aerated concrete Jan. 27, 2004
6547901 Reinforced plasterboard Apr. 15, 2003
6340388 Strengthened, light weight wallboard and method and apparatus for making the same Jan. 22, 2002
6319312 Strengthened, light weight wallboard and method and apparatus for making the same Nov. 20, 2001
6197235 Method of manufacture for textured surface panels and panel products made therefrom Mar. 6, 2001
6153040 Gypsum board paper that reduces roll up during lamination, and board comprising such paper Nov. 28, 2000
6063472 Architectural material and a process of production thereof May. 16, 2000
6059907 Process for preparing incombustible board for interior decoration and facing of architectures May. 9, 2000
5985061 Inorganic board and a method of manufacturing said inorganic board Nov. 16, 1999
5594986 Method for obtaining an electrical connection with a thin monoface conductive strip and connection thus obtained Jan. 21, 1997
5573829 Laminated board having gypsum core and wood veneer lamination with debossed designs Nov. 12, 1996
5531946 Process for the production of staff panels according to a semidry method and installation for implementing the process Jul. 2, 1996
5510198 Re-usable cement forms Apr. 23, 1996
5507894 Composite panels having two outer layers and a core Apr. 16, 1996
5391245 Fire-resistant building component Feb. 21, 1995
5368663 Process for producing plate-shaped bodies made of a mixture of plaster and fibrous materials and installation for implementing Nov. 29, 1994
5264057 Process for the production of a flame resistant to nonflammable composite panel and apparatus for carrying out the process Nov. 23, 1993
5256222 Lightweight building material board Oct. 26, 1993
5198052 Method of reshaping a gypsum board core and products made by same Mar. 30, 1993
5135805 Method of manufacturing a water-resistant gypsum composition Aug. 4, 1992
5085929 Gypsum board Feb. 4, 1992
4994113 Mixture for the preparation of building materials Feb. 19, 1991
4966739 Process for making gypsum fiberboard Oct. 30, 1990
4840688 Method for the production of fibrous plaster boards Jun. 20, 1989
4584224 Tapered edge board Apr. 22, 1986
4477300 Cementitious board manufacture Oct. 16, 1984
4421704 Method of treatment for plaster articles to improve wear and water resistance and article of manufacture Dec. 20, 1983
4336294 Coated boards of wooden material in particular for use in furniture Jun. 22, 1982
4298413 Method and apparatus for producing concrete panels Nov. 3, 1981
4214027 Process for the production of fiber-containing plaster boards Jul. 22, 1980

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