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Class Information
Number: 156/42
Name: Adhesive bonding and miscellaneous chemical manufacture > Methods > Plaster board making > With embedding of reinforcing material during or subsequent to core formation
Description: Processes which include the envelopment of an additional element by the core material which element imparts additional structural strength to the completed plasterboard.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8413333 Method for making an asymmetrical concrete backerboard Apr. 9, 2013
8323786 Lightweight cement panel Dec. 4, 2012
8137490 Process of manufacturing cement based armor panels Mar. 20, 2012
8062478 Gypsum wood fiber articles and methods of making same Nov. 22, 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
7918950 Low fiber calcination process for making gypsum fiberboard Apr. 5, 2011
7897079 Method and apparatus for scrim embedment into wet processed panels Mar. 1, 2011
7842629 Non-woven glass fiber mat faced gypsum board and process of manufacture Nov. 30, 2010
RE41592 Method of producing gypsum/fiber board Aug. 31, 2010
7776170 Fire-resistant gypsum panel Aug. 17, 2010
7736569 Apparatus and method for dispensing carbon fiber into concrete Jun. 15, 2010
7718019 Methods of and systems for preparing a heat resistant accelerant slurry and adding the accelerant slurry to a post-mixer aqueous dispersion of calcined gypsum May. 18, 2010
7670520 Multi-layer process for producing high strength fiber-reinforced structural cementitious panels with enhanced fiber content Mar. 2, 2010
7617606 Composite door, door core and method of manufacture Nov. 17, 2009
7445738 Multi-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels Nov. 4, 2008
7244328 Composite door, door core and method of manufacture Jul. 17, 2007
6998359 Article and process for maintaining orientation of a fiber reinforced matt layer in a sandwiched urethane construction Feb. 14, 2006
6755925 Method of resisting corrosion in metal reinforcing elements contained in concrete and related compounds and structures Jun. 29, 2004
6632550 Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it Oct. 14, 2003
6547901 Reinforced plasterboard Apr. 15, 2003
6508895 Method of producing gypsum/fiber board Jan. 21, 2003
6488792 Method and apparatus for manufacturing cementitious panel with reinforced longitudinal edge Dec. 3, 2002
6475313 Process for making gypsum board having improved through-penetration strength Nov. 5, 2002
6342284 Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it Jan. 29, 2002
6254817 Reinforced cementitious boards and methods of making same Jul. 3, 2001
6106607 Composition for hydrophobing gypsum and methods for the preparation and use thereof Aug. 22, 2000
6063472 Architectural material and a process of production thereof May. 16, 2000
6054205 Glass fiber facing sheet and method of making same Apr. 25, 2000
5985061 Inorganic board and a method of manufacturing said inorganic board Nov. 16, 1999
5922447 Lightweight gypsum board Jul. 13, 1999
5804003 Method of manufacturing an inorganic board Sep. 8, 1998
5718785 Glass mat with reinforcing binder Feb. 17, 1998
5637362 Thin, sealant-coated, fiber-reinforced gypsum panel Jun. 10, 1997
5520779 Process and apparatus for producing fiber-reinforced plaster plates May. 28, 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
5350554 Method for production of reinforced cementitious panels Sep. 27, 1994
5342566 Method of manufacturing fiber gypsum board Aug. 30, 1994
5320677 Composite material and method of producing Jun. 14, 1994
5264057 Process for the production of a flame resistant to nonflammable composite panel and apparatus for carrying out the process Nov. 23, 1993
5221386 Cement board having reinforced edges Jun. 22, 1993
5151130 Amine-based consistency reducers for gypsum stucco slurries Sep. 29, 1992
5148645 Use of fibrous mat-faced gypsum board in shaft wall assemblies and improved fire resistant board Sep. 22, 1992
5100474 Glass fibre reinforced plaster composition Mar. 31, 1992
5076978 Method of producing gypsum decorative molding Dec. 31, 1991
4948647 Gypsum backer board Aug. 14, 1990
4902348 Reinforced plasterboard and method of forming Feb. 20, 1990
4816091 Method and apparatus for producing reinforced cementious panel webs Mar. 28, 1989

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