| Patents for C04B 20 - Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups  and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups  specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials (4,429) | 
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| 12/12/1989 | US4886448 Shaft installation for processing of fuel-containing solid materials | 
| 11/29/1989 | CN1037497A Production of ca-increasing slag from calcium-rich industrial dregs (calcium carbide dreg, white sludge and red sludge) | 
| 11/23/1989 | EP0342197A1 Process for preparing a composite material | 
| 11/02/1989 | DE3813445A1 Concrete spraying process and also dry mix for carrying out the process | 
| 10/19/1989 | WO1989009751A1 Process for treating granular slag formed during the production of hematite iron and phosphoric iron | 
| 10/19/1989 | WO1989003805A3 Production of low-fluorine calcium phosphate and phosphoric acid and of silica | 
| 10/18/1989 | EP0337931A1 Shrink controlled low-temperature-curable polyester resin compositions | 
| 10/18/1989 | EP0337792A2 Flowable joint sealant for concrete highway | 
| 10/10/1989 | US4873207 Ceramic aggregate for roadway composition and method of producing same | 
| 10/10/1989 | US4873145 Resin-coated aggregates | 
| 10/05/1989 | WO1989009250A1 Process for producing fluorescent or phosphorescent pigments coated with glass | 
| 10/05/1989 | WO1989009122A1 Coloured stearates | 
| 10/05/1989 | DE3809937A1 Verfahren zur herstellung von baustoffen mit farbgebenden eigenschaften Process for the manufacture of building materials with coloring properties | 
| 09/27/1989 | EP0334413A1 Process for the production of solid agglomerates from mineral sludges | 
| 09/26/1989 | CA1261609A1 Process for water proofing soils, and products used in said process | 
| 09/21/1989 | WO1989008623A1 Filler for a building material | 
| 09/20/1989 | EP0333506A2 Flame retardant vegetable fibre material and the process of the same | 
| 09/19/1989 | CA1259533A1 Inorganic fibrous material as reinforcement for composite materials and process for production thereof | 
| 09/13/1989 | EP0182793B1 High porosity body used for adsorption or absorption purposes, particularly for animal litters, method for producing it and utilization thereof | 
| 08/29/1989 | US4861659 High tenacity acrylonitrile fibers and a process for production thereof | 
| 08/22/1989 | US4859243 Carbon fiber-reinforcing gypsum models and forming molds, gypsum powder materials for making such models and molds, and a method for producing them | 
| 08/17/1989 | DE3803786A1 Mineral binder and process for its production and processing | 
| 08/15/1989 | US4857244 Exposing reinforcing fibers to electrostatic field before impregnation with vulcanizable liquid matrix; mechanical properties | 
| 07/25/1989 | US4851047 Process for preparing water-repellent articles from gypsum powder containing hydrophobic agents | 
| 07/18/1989 | US4848973 Grout material and grouting method using same | 
| 07/11/1989 | CA1257421A1 Retroreflective materials and methods for their production and use | 
| 07/05/1989 | EP0323292A1 Process for coating fibres and its use in the production of composite materials | 
| 06/27/1989 | CA1256628A1 Electrically conductive microspheres and compositions incorporating same | 
| 06/08/1989 | DE3824180C1 Process for producing ceramic shaped parts | 
| 05/24/1989 | DE3738818A1 Method of producing a yielding body of construction material | 
| 05/18/1989 | DE3836584A1 Method for disposing of coarse-grained rock material containing oil and/or grease | 
| 05/16/1989 | US4830797 Foamed perlite or glass | 
| 05/16/1989 | CA1254330A1 Electroconductive element, precursor conductive composition and fabrication of same | 
| 05/05/1989 | WO1989003805A2 Production of low-fluorine calcium phosphate and phosphoric acid and of silica | 
| 05/02/1989 | US4826628 Vapor/thermal method of delaminating and stabilizing a phyllosilate and product | 
| 04/25/1989 | US4824810 Highly porous ceramic material for absorption and adsorption purposes, particularly for animal litter/bedding, process for the production thereof and the use thereof | 
| 04/18/1989 | US4822679 Precoated with organic polymer binder; adhesion | 
| 04/18/1989 | US4822422 Geothermal wells | 
| 04/13/1989 | DE3732328A1 Process for landfilling waste materials from boiler furnaces | 
| 04/06/1989 | DE3731993A1 Light-weight (breeze) concrete for construction | 
| 03/14/1989 | US4812204 Process for obtaining boric acid treated asbestos fiber | 
| 03/14/1989 | CA1251223A1 Ceramic spheroids having low density and high crush resistance | 
| 03/08/1989 | EP0306172A1 Stabilized phyllosilicates and method for their production | 
| 02/07/1989 | US4802923 Resistance to salt induced breakdown and high alkali environment; paving | 
| 01/31/1989 | US4801563 Thermal insulating expanded silicate-hydrate product and method of forming | 
| 01/04/1989 | CN1030087A Constituents of coloured quartz sand and its preparation | 
| 12/27/1988 | US4793980 Hollow porous microspheres as substrates and containers for catalyst | 
| 12/20/1988 | CA1247153A1 Accelerator for gypsum plaster and process of manufacture | 
| 12/13/1988 | CA1246517A1 Sand producing method and apparatus | 
| 12/08/1988 | DE3718091A1 Device for the heat treatment of predominantly mineral material having a residual calorific value, in particular for ceramicising tailings arising in coal production | 
| 12/07/1988 | CN88210263U Burning device for pearlstone powder | 
| 11/22/1988 | CA1245399A1 Expandable phenolic resin-coated composite beads, a process for production thereof and a process for molding thereof | 
| 11/17/1988 | EP0291108A1 Process for producing high-strength mortar | 
| 11/16/1988 | CN88102976A Method for manufacturing expanded perlite fireproof board and its heat insulating material | 
| 11/15/1988 | US4784691 Dry cement composition | 
| 11/09/1988 | EP0290394A1 Improved hyraulic cement | 
| 11/08/1988 | CA1244484A1 Process and apparatus for producing an expanded mineral material | 
| 11/01/1988 | US4781982 Dentifrices | 
| 11/01/1988 | CA1244170A1 Lightweight joint compound | 
| 11/01/1988 | CA1243908A1 Metal-coated hollow microspheres | 
| 10/26/1988 | EP0288070A2 Clay-containing material and method for its preparation | 
| 10/25/1988 | US4780433 Insulating ceramic building material and method with fired clay and garbage mixture | 
| 10/12/1988 | EP0285623A1 Shaft kilns for processing fuel-containing solid materials | 
| 10/12/1988 | EP0174970B1 Shaft arrangement for thermal and/or material transfer processes between a gas and bulk material | 
| 10/12/1988 | CN88101137A Production of mixed cement materials from wet-drained coal ash | 
| 10/11/1988 | US4777154 Hollow microspheres made from dispersed particle compositions and their production | 
| 10/06/1988 | WO1988007503A1 Method for manufacturing fine porous member | 
| 10/06/1988 | WO1988005375A3 Process for preparing a composite material | 
| 09/20/1988 | US4772328 Or acrylonitrile copolymer, length, denier, modulus, strength, extensibility | 
| 09/14/1988 | EP0282240A1 Cement compositions and use thereof | 
| 09/13/1988 | US4770935 Inorganic fibrous material as reinforcement for composite materials and process for production thereof | 
| 08/30/1988 | CA1241153A1 Method of increasing the volume yield of exfoliated vermiculite | 
| 08/25/1988 | DE3704783A1 Process for producing expanding mortar mixtures | 
| 08/23/1988 | US4765547 Apparatus for separating fiber from fiber aggregate | 
| 08/23/1988 | CA1240882A1 Coated glass microbubbles | 
| 08/17/1988 | EP0278518A1 Process for the preparation of water-repellent gypsum articles and gypsum powder containing a hydrophobic agent | 
| 08/16/1988 | US4764218 Process for the preparation of micro inorganic foamed granules | 
| 08/16/1988 | US4764107 Shaft arrangement for thermal and/or material transfer processes between a gas and bulk material | 
| 08/11/1988 | WO1988005765A1 Process for producing lightweight concrete | 
| 08/09/1988 | US4762443 Method of rendering soils impervious | 
| 07/28/1988 | WO1988005375A2 Process for preparing a composite material | 
| 07/27/1988 | EP0276041A2 Process for preparing composite material including vulcanized products notably tires, ceramics and electrodes and products obtained with said process | 
| 07/26/1988 | US4759988 Grain for construction material | 
| 07/21/1988 | DE3700382A1 Process for foaming glass-forming mineral materials, in particular waste materials such as fly ashes, mud, gravel sludge, flotation residues, ashes from waste etc. | 
| 07/14/1988 | DE3723117C1 Shaped inorganic article | 
| 07/12/1988 | US4756931 Retroreflective materials and methods for their production and use | 
| 07/05/1988 | US4755313 Enclosure containing insulating material mixture of totally reflecting non-metallic glass, plastic or ceramic fibers coated with aluminum and insulating powder of silica, alumina and/or titania | 
| 06/28/1988 | US4753679 Cement products containing surface treated inorganic particulates | 
| 06/22/1988 | EP0271825A2 Hydraulic cementitious compositions reinforced with fibers containing polymerized polyacrylonitrile | 
| 06/22/1988 | EP0271794A2 Material and process for jointing tiles | 
| 06/08/1988 | EP0269715A1 Compact reinforced composite. | 
| 06/01/1988 | EP0268645A1 Process for colouring concrete. | 
| 05/19/1988 | DE3638524A1 Additive for reinforcing the effect of cement in mortar and concrete | 
| 05/16/1988 | EP0190286A4 Hollow microspheres made from dispersed particle compositions and methods and apparatus for producing them. | 
| 05/05/1988 | DE3636202A1 Composite material | 
| 05/03/1988 | US4741773 Silicone oil and paraffin oil with surfactant | 
| 05/03/1988 | CA1236127A1 Reinforced cement | 
| 04/26/1988 | US4740486 Ceramic composition to make cement with insulating properties | 
| 04/20/1988 | CN86106748A Superlight ceramsites and their compounding process | 
| 04/13/1988 | EP0263723A2 A process for manufacture of fibre-reinforced shaped articles |