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| Number | Title | Issue Date |
| 7427316 | Tropolone complexes as wood preservatives Complexes of tropolone and copper and/or zinc were solubilized in ammoniacal solution providing preservative solutions that fully penetrate wood. With loss of the ammonia from the wood, the complexes were stably retained in the wood providing a long lasting preserva... | 09/23/2008 |
| 7361215 | Material and method for treatment of timber A material and method for treating timber. The material comprises a preservative and a carrier. The carrier is selected such that it remains mobile within the wood and provides for migration of the preservative within the treated wood. By providing a carrier which i... | 04/22/2008 |
| 7297193 | Wax-biocide wood treatment A method for preserving wood by contacting wood with an aqueous composition comprising a paraffin wax, at least one nonionic surfactant, and at least one organic wood preservative. ... | 11/20/2007 |
| 7264886 | Water repellent compositions for wood preservatives Water-based wax emulsions, optionally for use in conjunction with alkaline copper and/or quaternary ammonium based preservatives systems, are described. These emulsions are comprised of natural or synthetic wax, nonionic surfactants having HL B values greater than 1... | 09/04/2007 |
| 7175878 | Cold antireflection layer deposition process The invention concerns a method for making an antiglare stack by vacuum evaporation on an organic substrate (1) at a temperature lower than 150° C., comprising steps which consist in depositing at least a layer of material having a refractive index different... | 02/13/2007 |
| 6821631 | Method and composition for treating substrates A method of treating substrates, such as wood, including the steps of applying an alkali silicate solution to one or more substrates and applying an alkali borate solution with boric oxide (B2O3) content to the substrates. Substrates that have ... | 11/23/2004 |
| 6696102 | Cellulose preservative method and apparatus A method and apparatus for applying a fluid preservative to wood or wood products has a work tank for maintaining a predetermined concentration of preservative in the fluid. The work tank is equipped with a heater to keep the temperature of the fluid and ... | 02/24/2004 |
| 6641927 | Soybean oil impregnation wood preservative process and products A process for treating wood and wood products is disclosed. Wood is impregnated under pressure with soybean oil or a mixture of vegetable oils with soybean oil, which oil is caused to polymerize within the wood. The polymerized oil is effectively fixed wi... | 11/04/2003 |
| 6596063 | Impregnated wood The invention relates to the impregnation of wood by a solvent-free melt of modified natural resin which is solid at ambient temperature. Besides the modified natural resin, melts according to the invention may comprise wax and further additives. The melt... | 07/22/2003 |
| 6503306 | Composition for impregnating porous materials, preparation and use thereof Composition for impregnating porous materials, in which the composition contains at lease one component having preservative properties or which release a component having preservative properties on heating, the composition comprising an emulsion of water ... | 01/07/2003 |
| 6348089 | Compositions and process for the protective treatment of wood Compositions for the protective treatment of wood against rot and attack by insects which comprise at least the following components: a) 10-90 parts of coal-tar oil b) 2-20 parts of a biocidally active quaternary ammonium compound c) 10-90 parts of water. are descr... | 02/19/2002 |
| 6274199 | Wood treatment process A process for treating a wood substrate with a water-based formulation containing a wax in order to confer water repellency to the substrate comprising the steps of: (a) placing the substrate in a treatment vessel and reducing the pressure in the vessel t... | 08/14/2001 |
| 6235403 | Process of treating wood with preservative A wood treatment process is disclosed in which in one aspect the wood is impregnated with a waterborne preservative such as CCA at elevated temperature and pressure. The impregnated wood and excess waterborne preservative are separated while the treatment... | 05/22/2001 |
| 5824370 | Process for treating wood A process for treating wood involving impregnation of the wood with a preservative followed by the heat-fixation of the preservative in the wood using a pre-heated aqueous heat transfer fluid to effect the heat fixation of the preservative. The process pa... | 10/20/1998 |
| 5783258 | Method for treating lumber A method for treating lumber using a treatment composition having white mineral oil. The lumber is submerged in the treatment composition at atmospheric pressure or at an elevated pressure. The white mineral oil replaces moisture removed from the lumber, ... | 07/21/1998 |
| 5652023 | Fixation process for heat-fixable preservative treated wood An improved process for the fixation of preservatives in wood is disclosed which initiates the fixation process in the fixation vessel by the application of sufficient pressure to substantially obviate a thermal expansion effect of the treated wood; conta... | 07/29/1997 |
| 5281439 | Process for uniformly integrating a solid charge within a porous substrate The process is particularly well suited to the manufacture of composite materials, where a fibrous reinforcement texture is to be impregnated by a densifying matrix, and comprises the steps of: preparing a slurry containing a solid charge in the form of finely... | 01/25/1994 |
| 4668539 | Process for the preservation of wood products The present invention relates to improvements in impregnated wood preserving processes utilizing naphthalene containing preservative agents comprising recovering that portion of the naphthalene stripped from the preservative agent during a drying phase in... | 05/26/1987 |
| 4542046 | Impregnation tank for wood The apparatus and the method for impregnation of wood. The apparatus has a closable tank which defines our interior space and comprises a vessel with at least one door for closing the vessel to isolate the interior space from the exterior of the tank. The... | 09/17/1985 |
| 4464424 | Concrete joint sealant plate and process for manufacturing thereof A method for preparing a concrete joint sealant plate, comprising the steps of impregnating asphalt emulsion into fibrous plate under a reduced pressure and then drying it by means of a heating presser; and a concrete joint sealant plate produced therefro... | 08/07/1984 |
| 4371572 | Process for the treatment of wood An improved process for the drying/coloring of wood is disclosed wherein the wood is contacted with a drying/coloring oil. At least the outer surface layer of the wood has a moisture content in excess of the fiber saturation point of the wood. The treatme... | 02/01/1983 |
| 4364975 | Method of and apparatus for producing asphalt saturated fiberboard A tank having a hinged top and sealing means is provided with a series of heaters mounted on the inside of the front, rear and side walls and also the bottom of the tank. A rack containing fiberboards placed in upright, spaced position is set on the botto... | 12/21/1982 |
| 4323602 | Water repellent and preservative for wood products A combined water repellent and preservative for wood prepared in a concentrate for mixing with water and utilizing 3-iodo-2-propynyl butyl carbamate.... | 04/06/1982 |
| 4305978 | Process for treatment of wood An improved wood preservation process is disclosed wherein wood is contacted with an emulsion of an oil-based perservative in water.... | 12/15/1981 |
| 4233929 | Apparatus for the treatment of timber An apparatus for the treatment of timber comprises a vessel having at least three chambers arranged in series for passage of the timber therethrough on conveyor belts or the like. There is means for drawing a vacuum in each of the end chambers and means f... | 11/18/1980 |
| 4174412 | Structures and structural members made wholly or partly of wood A wooden part of a structure or structural member, e.g. a telegraph pole, that is exposed to the atmosphere is impregnated with wood preservative by a vacuum impregnation process. The exposed wooden part of the pole is surrounded by a closely fitting, flu... | 11/13/1979 |
| 4142009 | Method of treating timber with composition having a colloidal pigment An agent for stabilization of a decorative finish is incorporated in a timber preservative composition comprising a preservative e.g. fungicide, insecticide or fire retardant in an organic solvent e.g. white spirit, chlorinated hydrocarbon such as methyle... | 02/27/1979 |
| 4062991 | Treatment of wood An agent for stabilization of a decorative finish is incorporated in a timber preservative composition comprising a preservative e.g., fungicide, insecticide or fire retardant in an organic solvent e.g. white spirit, chlorinated hydrocarbon such as methyl... | 12/13/1977 |
| 3995077 | Process for treatment of wood Wood is impregnated with a solution of a preservative in a vaporizable, water-free, organic solvent and thereafter treated with a warm high-boiling oil composition under subatmospheric pressure conditions effecting evaporation of the solvent used in the i... | 11/30/1976 |
| 3953642 | Pressure sensitive recording sheet A pressure sensitive recording sheet adapted for imaging under the pressure of a typewriter key or other writing instrument. The sheet comprises a ply of high surface area polyolefin fibers masking a colored medium therein. The ply of polyolefin fibers wh... | 04/27/1976 |
