| Patents for C04B 11 - Calcium sulfate cements (2,042) |
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| 03/04/1993 | WO1993003899A1 Process and device for producing multi-layered, fibre-reinforced plaster plates |
| 03/04/1993 | CA2116132A1 Process and device for producing multilayered, fiber-reinforced plaster plates |
| 03/03/1993 | CN1069472A Quick-producing method for gypsum used in cement by using fluorine residue |
| 02/25/1993 | DE4127932A1 Fibre-reinforced plasterboard mfr. - using by=product gypsum and waste paper |
| 02/25/1993 | DE4127930A1 Continuous mfr. of fibre-reinforced plasterboard - using waste paper fibres by=prod. gypsum of controlled particle size and density |
| 02/25/1993 | DE4127929A1 Continuous mfr. of fibre-reinforced plasterboard - from waste paper fibres and gypsum of controlled density and particle size |
| 02/25/1993 | DE4124984A1 Verwendung einer misch-, granulier- und trocknungsvorrichtung The use of a mixing, granulating and drying device |
| 02/24/1993 | WO1993004008A1 Process and device for producing fibre-reinforced plaster plates |
| 02/24/1993 | CA2116137A1 Process and device for producing fiber-reinforced plaster plates |
| 02/23/1993 | CA1313748C Method and apparatus for calcination |
| 02/23/1993 | CA1313747C Calcination apparatus |
| 02/18/1993 | WO1993002984A1 Use of mixing, granulating and drying device |
| 01/13/1993 | CN1067876A Method for improving gypsum product performance |
| 01/05/1993 | US5176195 High permeability metal casting plaster and method of making same |
| 12/08/1992 | US5169617 Method of treating produced gypsum |
| 12/08/1992 | US5169444 Process for preparing calcium sulfate anhydrite |
| 11/25/1992 | EP0306511B1 Process for converting calcium sulphate dihydrate into alpha-hemihydrate |
| 11/19/1992 | EP0513779A2 Process and device for manufacturing free-flowing anhydrite flooring plaster |
| 11/17/1992 | US5164004 Mixture of alpha and beta hemihydrate gypsum |
| 10/15/1992 | WO1992017413A1 Silica-containing cement and concrete composition |
| 10/15/1992 | CA2131906A1 Silica-containing cement and concrete composition |
| 10/01/1992 | WO1992016468A1 Process for calcining moist gypsum |
| 10/01/1992 | DE4109743A1 Verfahren zum kalzinieren von feuchtem gips A method for calcining of moist gypsum |
| 09/26/1992 | CA2083824A1 Method for the calcination of moist gypsum |
| 09/16/1992 | EP0503451A1 Flowing plaster |
| 09/16/1992 | EP0503450A1 Dry powdery plaster composition |
| 08/18/1992 | US5139749 For preheating incoming solids by use of hot exhaust gases |
| 07/08/1992 | CN1062518A Method for making model with high-strength gypsum |
| 07/01/1992 | EP0492567A2 Burned anhydrite, procedure for its production and its use |
| 05/30/1992 | CA2036329A1 Absorption of liquids by calcium sulphate |
| 05/13/1992 | CN1016598B Process of sulfuic acid from supse |
| 05/12/1992 | CA1300649C Cementitious compositions |
| 05/06/1992 | EP0483193A1 Process for the production of a filler for pvc moulding materials, the use of the filler produced by this process and pvc moulding materials containing the filler produced by this process |
| 04/04/1992 | WO1992006049A1 High permeability metal casting plaster and method of making same |
| 04/04/1992 | CA2070382A1 High permeability metal casting plaster and method of making same |
| 03/03/1992 | US5093093 Milling, granulation, fruit acid as retarder, injection mortar |
| 02/19/1992 | CN1058764A Installation for treatment of pulverulent raw material such as calcium sulfate, for preparation of hydraulic binder |
| 02/12/1992 | EP0470288A2 Continuous production of gypsum board |
| 01/29/1992 | EP0309506B1 Installation for the preparation of high-strength plaster |
| 01/29/1992 | EP0277208B1 Highly efficient calcination of gypsum to hemihydrate |
| 01/09/1992 | WO1992000252A1 Fluidized calcining process |
| 01/08/1992 | CN1057635A Preparation process of plaster die powder |
| 12/27/1991 | EP0462678A1 Apparatus for treating pulverulent raw material such as calcium sulphate for the preparation of a hydraulic binder |
| 12/22/1991 | WO1991019685A1 Apparatus for treating a powdered base material such as calcium sulphate in order to produce a binder |
| 12/22/1991 | CA2064775A1 Processing plant of pulverulent materials such as calcium sulfate for producing cementing material |
| 11/22/1991 | CA2042806A1 Heat reclamation apparatus |
| 11/19/1991 | WO1991017968A1 A silica fume hydrating and plasticizing admixture for concrete |
| 11/19/1991 | CA2063985A1 Silica fume hydrating and plasticizing admixture for concrete |
| 11/14/1991 | DE4014553A1 Dry mortar mixt. prodn. - by simultaneous calcination of gypsum, drying moist additives and homogenisation of the mixt. |
| 11/13/1991 | CN1056094A Process for treating deposit gypsum |
| 10/10/1991 | DE4011366A1 Flue gas desulphurisation - with simultaneous prodn. of alpha-hemi-hydrate |
| 10/02/1991 | CN1054960A Method for making carbonized silicate building materials products using boiler flue gas |
| 09/25/1991 | EP0447800A1 Process for the treatment of gypsum |
| 09/25/1991 | EP0258384B1 Lightweight joint compound having improved paintability |
| 08/20/1991 | US5041333 Lightweight wallboard and insulating boards |
| 07/04/1991 | DE3943339A1 Desulphurising exhaust gas plaster recovery - uses flotation of output from hydro cyclone to separate discoloured particles and leave bright plaster for recycling |
| 06/13/1991 | DE3940471A1 Stable anhydrite-II prodn. |
| 05/29/1991 | CN1051719A New phospho-gypsum cementing agent, and production and application thereof |
| 05/14/1991 | US5015450 Process for making calcium sulfate alpha-hemihydrate from calcium sulfate dihydrate |
| 05/14/1991 | US5015449 Process for making construction grade calcium sulfate alpha-hemihydrate from moist finely divided gypsum obtained from a power plant flue gas desulfurization |
| 05/07/1991 | US5013237 Oven for dehydrating pulverulents, sand or granules |
| 04/30/1991 | US5011668 Reducing the proportion of insoluble anhydrite formed by reducing temperature of hot gas |
| 04/16/1991 | US5007825 Heat reclamation apparatus |
| 03/07/1991 | DE4020786A1 Working-up fine particulate gypsum into form for making products - by separating particles from off-gas and allowing to fall into screw feed in which binder is passed |
| 03/06/1991 | EP0414937A1 Process for the preparation of curable calcium sulphates from calcium sulphate dihydrate |
| 02/28/1991 | DE3927927A1 Fibre-reinforced gypsum article prodn. e.g. for fibre board - by moulding autoclave-treated slurry of di:hydrate and fibres |
| 02/13/1991 | CN1049146A Alpha-semi water plaster stone producing method and equipment |
| 02/12/1991 | US4992103 Cementitious compositions |
| 02/07/1991 | WO1991001349A1 Process for the production of a filler for pvc moulding materials, the use of the filler produced by this process and pvc moulding materials containing the filler produced by this process |
| 02/05/1991 | CA1279877C High-strength, fire-resistant gypsum composition |
| 01/24/1991 | DE3923934A1 Filler for PVC moulding materials - by heating gypsum with dilute dehydrating acid, neutralising with alkali- or alkaline earth-carbonate, removing water, and carbon di:oxide |
| 01/22/1991 | CA1279333C Hydraulic binders and building elements formed of non- traditional materials |
| 01/22/1991 | CA1279332C Volume-stable hardened hyraulic cement |
| 01/16/1991 | CN1011219B Process for the production of highly concentrated phosphoric acid |
| 12/12/1990 | CN1047667A Inorganic water-proof plaster stone ceiling |
| 12/05/1990 | EP0400836A1 Coal fired power plant with pollution control and useful byproducts |
| 12/04/1990 | US4974334 Gas flow through vibrating atea |
| 11/20/1990 | US4971627 Calcium sulfate, calcium sulfite, calcium hydroxide, calcium carbonate desulfurized product, mixing flue ash or flue dust, oxidation and roasting |
| 11/15/1990 | DE3915432A1 Standard cement mfr. - using high pressure roller press, sieve and gypsum dehydration heat supply |
| 10/23/1990 | US4965031 Forming aqueous suspension, calcining, adding nonfibrous calcium sulfate hemihydrate |
| 10/03/1990 | EP0294415B1 Process for the in situ recovery of calcium sulfate hemihydrate and/or calcium sulfate (anhydrite) from the scrubber units of a wet flue gas desulphurating plant |
| 09/20/1990 | DE3908964A1 Process for producing foamed gypsum plaster |
| 09/04/1990 | US4954134 Agglomeration of gypsum, limestone, or gypsum-limestone mix |
| 07/26/1990 | WO1990008111A1 Process for producing calcium sulphate anhydrite |
| 07/26/1990 | DE3901428A1 Process for preparing calcium sulphate anhydrite |
| 07/25/1990 | EP0379266A2 Production method for anhydrous gypsum |
| 06/19/1990 | US4935211 Fluorogypsum waste solidification material |
| 06/12/1990 | US4932862 Suspended gas reactor |
| 06/05/1990 | US4931099 Self-levelling mortar mixture |
| 05/31/1990 | WO1990005709A1 Composite material and method of producing |
| 05/30/1990 | EP0370703A1 Composite material and method of producing |
| 04/24/1990 | US4919613 Method and apparatus for calcination |
| 04/18/1990 | EP0286636B1 Process and device for drying and/or burning powdery materials |
| 04/17/1990 | US4917024 Coal fired power plant with pollution control and useful byproducts |
| 04/10/1990 | US4915623 Calcination apparatus |
| 03/28/1990 | CN1040778A Apparatus for producing high-strength plaster |
| 03/22/1990 | DE3831671A1 Water-resistant gypsum or gypsum cement |
| 02/28/1990 | CN1040009A Process of sulfuric acid from gupse |
| 02/15/1990 | DE3827613A1 Binder and ready-mix mortar for anhydrite flow flooring and flow flooring therefrom |
| 02/15/1990 | DE3827612A1 Building material for use in underground operation |