| Patents for E04G 23 - Working measures on existing buildings (7,015) |
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| 09/12/1989 | CA1259162A1 Repairing utility poles |
| 09/08/1989 | WO1989008082A1 Devices for treating waste water |
| 09/06/1989 | EP0331197A1 Projecting structure for façades |
| 09/06/1989 | EP0331166A2 Process for separation of asbestos-containing material and prevention of floating of dust |
| 09/06/1989 | EP0331136A1 Installations for waste water disposal |
| 08/30/1989 | EP0330114A1 Injection anchor to be set in a predrilled hole of a multi-shelled building wall |
| 08/29/1989 | US4861401 Method of injecting adhesives into cracks |
| 08/29/1989 | US4860450 Surface stripper |
| 08/29/1989 | US4860400 Device capable of adhering to a wall surface by suction and treating it |
| 08/16/1989 | EP0328228A1 Process for covering a concrete wall with a plastic layer |
| 08/16/1989 | EP0327573A1 A device for crushing structures |
| 08/09/1989 | EP0327437A1 Expansion dowel for double masonry |
| 08/09/1989 | CN2042494U Double-wedged device for adjusting transform of constructions |
| 08/01/1989 | US4852687 Method and apparatus for hazardous material containment and disposal |
| 08/01/1989 | US4852661 Portable concrete hammer |
| 07/27/1989 | WO1989006731A1 Injection device for introducing fluids under pressure into cracked structures |
| 07/27/1989 | WO1989006589A1 Surface levelling device and method |
| 07/26/1989 | CN1034241A Leakage mending technique by beating, extruding and compressing |
| 07/18/1989 | US4848671 High pressure water/abrasive jet cutting nozzle |
| 07/18/1989 | US4848056 Hole repairing device |
| 07/13/1989 | WO1989006171A1 Heavy duty plate shear |
| 06/27/1989 | US4841703 Floor with co-operation between wood and concrete |
| 06/22/1989 | DE3726819A1 Apparatus for producing a joint |
| 06/21/1989 | EP0320855A2 Wrecking arrangement for chimneys, particularly for convergent chimneys |
| 06/14/1989 | EP0320445A2 Implements for pulling down walls, concrete floors and the like |
| 06/13/1989 | US4837933 Machine for removing tiles and like covering material from roof surfaces |
| 06/01/1989 | WO1989004898A1 Method and construction elements for readapting dwellings |
| 05/31/1989 | CN1033206A Construction technology of preventing and controlling seepage in buildings |
| 05/30/1989 | CA1254820A1 Composition for the desulphatizing cleaning of carbonatic stone surfaces |
| 05/30/1989 | CA1254706A1 Building roughcasting installation |
| 05/23/1989 | US4832803 Removal of chlorides from concrete |
| 05/17/1989 | EP0316199A1 Method & means for fixing building components together |
| 05/16/1989 | US4830338 Window opening facilitator |
| 05/16/1989 | CA1254335A1 Crack resistant coating for masonry structures |
| 05/11/1989 | DE3737084A1 Demountable formwork and process for introducing corrosion-protection material into the interspaces between the ropes of a rope cable of roof or bridge structures in use |
| 05/11/1989 | DE3736291A1 Process and apparatus for replacing the pressurised liquid medium in a hydraulic press, in particular a capsule press, by a curing material |
| 05/10/1989 | EP0315500A1 Enclosure to render building façades |
| 05/03/1989 | DE3735008A1 Process and device for disposing of asbestos-containing used building materials |
| 05/02/1989 | US4826373 Pin for injecting a grout material |
| 04/20/1989 | WO1989003456A1 Washing device mounted on a motor vehicle and comprising a rotary washing arm which delivers jets of pressurized hot water for cleaning various surfaces |
| 04/20/1989 | WO1989003254A1 High pressure water/abrasive jet cutting nozzle |
| 04/18/1989 | US4821958 Mobile pressure cleaning unit |
| 04/18/1989 | US4821609 Shingle cutting tool |
| 04/13/1989 | DE3733537A1 Process for repairing concrete foundations on masts and the like |
| 04/11/1989 | US4820564 Blind-side repair patch kit |
| 03/30/1989 | DE3800670C1 Process for repairing washed-concrete surfaces |
| 03/22/1989 | CN1031876A Improved pole repair system |
| 03/21/1989 | US4813313 Apparatus for demolishing a reactor shield wall |
| 03/16/1989 | DE3729917A1 Method of lifting structures by means of jacking piles |
| 03/16/1989 | DE3729135A1 Process for cutting, storing or detaching materials, e.g. structural parts |
| 03/16/1989 | DE3718281A1 Process and apparatus for producing a joint between two buildings |
| 03/09/1989 | WO1989001828A1 Mobile pressure cleaning unit |
| 03/08/1989 | EP0305393A1 Inhibiting corrosion in reinforced concrete. |
| 03/07/1989 | US4809478 Foam wall and ceiling hole repair method |
| 03/07/1989 | US4809436 Shingle stripping tool |
| 03/07/1989 | US4809383 Device capable of adhering to a wall surface by suction and treating it |
| 03/02/1989 | DE3736052C1 Process and apparatus for grouting cracks in a double-leaf wall |
| 02/28/1989 | US4807530 Expansive demolition agent |
| 02/21/1989 | US4806172 Jetting water from rotating nozzle at high pressure |
| 02/15/1989 | EP0303365A2 Improved pole repair system |
| 02/14/1989 | US4804693 Crack resistant coating for masonry structures |
| 02/02/1989 | DE3735044A1 Process and apparatus for producing a structure with a positively locking connection of its load-bearing reinforced-concrete structural parts |
| 01/31/1989 | CA1249672A1 Apparatus for demolishing a reactor shield wall |
| 01/26/1989 | DE3723813A1 Mobile device for flame cleaning |
| 01/26/1989 | DE3722546A1 Process for cutting, scoring or detaching materials, e.g. structural parts |
| 01/25/1989 | EP0300956A1 Method of strengtening cracked building structures |
| 01/25/1989 | CN1030628A Using elastic or plastic foundation to protect buildings influenced by exploitation |
| 01/18/1989 | EP0299860A1 Cutoff method and device for cracks in concrete structures |
| 01/18/1989 | EP0299121A1 Fluid injection apparatus |
| 01/17/1989 | US4798502 Corner grouting nozzle |
| 01/12/1989 | DE3744534A1 Verfahren zum einbringen von dichtungsmasse A method for mass yield of seal |
| 12/29/1988 | WO1988010349A1 Improvements in ties for building structures |
| 12/28/1988 | EP0185744B1 A method and a tool for increasing the width in the clear of a chimney |
| 12/27/1988 | US4793734 Apparatus for removing structural concrete |
| 12/21/1988 | EP0295274A1 Process and device for detaching bonded coverings |
| 12/20/1988 | US4792066 Chemical liquid injector |
| 12/13/1988 | US4790114 Masonry anchor |
| 12/08/1988 | DE3718000A1 Verfahren zur sanierung von gebaeuden durch umweltfreundliches deponiefaehigmachen von gesundheitsschaedlichen, staubenden feststoffen, insbesondere von saemtlichen im baugewerbe eingesetzten alten isoliermaterialien, spritzputzen und anderen beschichtungen auf basis von asbest-, glas-, stein- und/oder anderen mineralfasern sowie asbestzementwaren Process for the rehabilitation of buildings with environmentally friendly deponiefaehigmachen of gesundheitsschaedlichen, dust-tight materials, particularly of all EMTeachline used in the building industry old insulating materials, injection cleaning and other coatings on the basis of asbestos glass-, stone and / or other mineral fibers and asbestos-cement were |
| 12/07/1988 | EP0294192A1 Device and method for handling injurious materials |
| 12/01/1988 | WO1988009228A1 Process for cleansing of buildings by rendering noxious dust-forming solids suitable for pollution-free disposal |
| 11/24/1988 | DE3815551A1 Einrichtung zum ausfuehren eines ankers zwischen zwei oder mehr mauerelementen, insbesondere maueranker Means for executing a ankers between two or more wall elements, in particular wall anchor |
| 11/22/1988 | US4786341 Method for manufacturing concrete structure |
| 11/22/1988 | US4785893 Boom operated demolition apparatus and method of breaking composite material |
| 11/08/1988 | US4782844 Texture removal apparatus |
| 11/08/1988 | US4782642 Method and apparatus for panel edge coupling |
| 11/08/1988 | US4782634 Building construction |
| 11/02/1988 | CN87102845A Leak-prevention treatment and repair material for roofing and other concrete works and application technique thereof |
| 10/25/1988 | US4779301 Scraper |
| 10/20/1988 | DE3711475A1 Process and apparatus for the subsequent fastening of frost-resistant masonry work (fair-faced masonry work) or an engineering-brick facing shell |
| 10/20/1988 | DE3710547A1 Process and apparatus for demolishing high, narrow structures |
| 10/19/1988 | CN87102320A Application of initial stress technique of steel pipe concrete structures |
| 10/18/1988 | CA1243199A1 Apparatus for removing internal tiles from chimneys |
| 10/11/1988 | US4776906 Die cutting patch from heat-shrinkable plastic film of defined surface area to cover crack; heating to cause contraction |
| 10/11/1988 | US4776769 System for removing material with a high velocity jet of working fluid |
| 10/11/1988 | US4776524 Crusher |
| 10/04/1988 | US4775423 Prior spraying of foam |
| 09/28/1988 | EP0284391A1 Stripping machine cutter finger assembly |
| 09/27/1988 | US4773794 Injection anchors for placement in pre-drilled holes |
| 09/21/1988 | EP0283022A2 Floor preparation machine and method |
| 09/20/1988 | US4772166 Dual expansion anchor |