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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 |
| 6933016 | Method of increasing latent heat storage of wood products The heat storage capacity of natural cellulosic products is increased by injecting nucleating products and/or heat storing material into unfilled cells thereby increasing the amount of material that can undergo phase change for transferring latent heat. ... | 08/23/2005 |
| 6894099 | Stabilized borax based fire retardant system This invention relates to a novel stabilized borax based fire retardant system. More particularly, this invention pertains to a borax containing fire retardant system which is stabilized and resists leaching and oxidation when combined as a coating or an impregnatio... | 05/17/2005 |
| 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 |
| 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 |
| 6565923 | Method for manufacturing reinforced oriented strand board A method for manufacturing reinforced oriented strand boards includes steps of injecting melamine-formaldehyde resin or phenol-formaldehyde resin in finished oriented stand boards, of heating and pressing them to let the resin harden. As strands of woods ... | 05/20/2003 |
| 6432553 | Method of conserving waterlogged materials A method of preserving waterlogged materials and more specifically, preserving artifacts that have been submerged in water for long periods of time. A method of treating waterlogged materials that have been subjected to preservation techniques using polye... | 08/13/2002 |
| 6426118 | Method for pressure treating wood The present invention is a process for pressure treating wood and includes wood which has been pressure treated by the process. The process comprises infusion into the wood of a solution in water of an anhydride or the analogous acid of an anhydride, foll... | 07/30/2002 |
| 6406749 | Process for producing a modified lignocellulosic material A process of chemically modifying wood by impregnating the wood, under vacuum, with ammonia gas; after removal of residual ammonia, and while under pressure, impregnating the ammonia gas impregnated wood with an impregnating composition containing dicarbo... | 06/18/2002 |
| 6314695 | Stucco wall building arrangement A stucco wall structure for a building. The wall substrate is arranged for receipt of subsequent layers of surface material. The margin or periphery of the wall to be treated has a screed attached thereto. A sprayed-on coating of urethane is applied onto ... | 11/13/2001 |
| 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 |
| 6235349 | Method of pressure treating boards A method for treating wood products is provided wherein wood products are treated in an aqueous solution of a silicate, a rheology modifier, a wetting agent and, optionally, borax and/or a bacteriocide or fungicide; the aqueous solution having a pH of at ... | 05/22/2001 |
| 6235346 | Method for pressure treating wood The present invention is a process for pressure treating wood and includes wood which has been pressure treated by the process. The process comprises infusion into the wood of a solution in water of an anhydride or the analogous acid of an anhydride, foll... | 05/22/2001 |
| 6216898 | Method of manufacturing a stopper A process of manufacturing a stopper comprises impregnating a cork body with an elastomeric substance such as a silicone rubber mixture. The cork is submerged in the mixture and a vacuum is applied to enhance penetration of the mixture into the cork. The ... | 04/17/2001 |
| 6045865 | Process for impregnating solid wood and product obtainable by the process The present invention relates to an enzymatic process for treating a solid wood or laminated solid wood article in a liquid medium containing an oxidase enzyme, an impregnating substance and an oxidizing agent so as to fixate the impregnating substance in... | 04/04/2000 |
| 6022589 | Conservation of organic and inorganic materials The use of certain siloxane and silane materials for the conservation of organic and inorganic materials. More specifically, this invention deals with a method of impregnating organic and inorganic materials with siloxanes and silanes and ultimately curin... | 02/08/2000 |
| 5789087 | Method of conserving waterlogged materials A method of preserving waterlogged materials and more specifically, preserving artifacts that have been submerged in water for long periods of time. A method of treating waterlogged materials that have been subjected to preservation techniques using polye... | 08/04/1998 |
| 5736197 | Method of waterproofing rigid structural materials A novel coating for waterproofing and sealing a rigid structural unit using a styrene polymeric film cast from an organic solvent is disclosed. The coating is easily maintained as damaged areas and imperfections can be repaired by simply applying addition... | 04/07/1998 |
| 5731036 | Method for preserving wood A method is described for preserving wood comprising infiltrating the wood with gaseous carbon disulfide and impregnating the wood with an aqueous solution comprising a copper source, and dimethylamine.... | 03/24/1998 |
| 5686146 | Method of and apparatus for injecting treating-liquid into wood material and porous inorganic material, and method for destroying ray parenchyma cell walls and aspirated pit pair A method for injecting a treating liquid into a wood or stone material. The liquid is injected in an initial pressure-applying/injecting step in which the wood or stone material is immersed at ambient temperature in a treating liquid under an initial liqu... | 11/11/1997 |
| 5612142 | Preservation of wood with phenol formaldehyde resorcinol resins Wood and other cellulose-based products are preserved with a water-based treating solution containing a phenolic resin prepolymer such as phenol formaldehyde resin prepolymer, a resorcinol formaldehyde resin prepolymer and water. The treatment is carried ... | 03/18/1997 |
| 5609915 | Hardened and fire retardant wood products Wood products impregnated with from 30 to 80% of a polymerizable monomer selected from the group consisting of hexanediol diacrylate and hexanediol dimethacrylate have excellent indent resistance. The wood products are impregnated with the monomer solutio... | 03/11/1997 |
| 5318802 | Modifying a wood material utilizing formaldehyde polymer and sulfur dioxide In a method of treating a raw wood material with a formaldehyde polymer in the presence of sulfur dioxide at a reaction temperature within a reaction vessel to obtain a modified wood material, sulfur dioxide is supplied into the reaction vessel when a gas... | 06/07/1994 |
| 5246739 | Method for the treatment of wood with metal-lignin salts A method for treatment of wood, whereby the wood is impregnated with a wood preservative composition consisting essentially of an aqueous solution of ammonium salt of lignin and ammonia complexes of certain metal cations such as Cu(NH3)4 | 09/21/1993 |
| 5080935 | Process for post-treatment of preservative-treated wood Oil-borne preservative-impregnated wood is post-treated by: (A) contacting the preservative-impregnated wood in a closed vessel with steam and collecting a water-containing condensate generated in the vessel; (B) applying a vacuum which is sufficient to reflux... | 01/14/1992 |
| 5078912 | Wood preservative An agent for impregnating solid wood by the pressure process, based on a water-dilutable formulation of a copper salt, excess alkanolamine and, if required, a salt with a fungicidal anion, has a pH of not less than 8 in the concentration usually employed ... | 01/07/1992 |
| 4971125 | Shake fabricating process A shake fabricating process for producing roofing shakes from wood is provided. In accordance with the process a log is stripped of its bark and cut into bolts having a preselected length corresponding to the desired length of the shakes to be produced. T... | 11/20/1990 |
| 4871473 | Wood preservative Wood preservatives which are based on a zinc compound and an aliphatic carboxylic acid and additionally contain a polyamine and processes for preserving wood with these preservatives.... | 10/03/1989 |
| 4486475 | Method of modifying wood According to the invention, a method of modifying wood comprises the steps of impregnating wood with a modifying system, d drying the impregnated wood in a hydrophobic heat transfer agent, and curing the impregnating system in the wood, the drying and cur... | 12/04/1984 |
| 4466998 | Wood impregnation Water-borne preservative salts are used to impregnate wood by the empty-cell pressure impregnation method without the precipitation of water-borne salts such as chromium, copper and arsenic when wood sugars enter the treating solution during the kickback ... | 08/21/1984 |
| 4413024 | Method for chemical treatment of woods Disclosed is a method for the chemical treatment of woods, which comprises introducing a chemical solution into a pressure vessel charged with wood so that the wood is entirely dipped in the chemical solution, heating the chemical solution to a temperatur... | 11/01/1983 |
| 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 |
| 4343840 | Method and apparatus for treating cellulosic products A method and apparatus for impregnating low density fiberboard with asphalt is disclosed, and which includes stacking the sheets, placing the stacks in a sealable chamber, and flooding the chamber with a treating solution composed of a mixture of asphalt ... | 08/10/1982 |
| 4325993 | Wood preservation process The present invention relates to a process for preserving wood, in particular hardwoods, against attack by living organisms, e.g. fungi and insects, which destroy wood. In particular, the present invention provides a one or two step process for preserving... | 04/20/1982 |
| 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 |
| 4303705 | Treatment of wood with water-borne preservatives A process for the treatment of wood is disclosed in which water-borne wood treatment materials, such as CCA salts, are forced into the wood under pressure and the water-borne wood treatment materials are held within the wood under pressure until they are ... | 12/01/1981 |
| 4301217 | Method of flameproofing wood with inorganic ammonium salts and dicyandiamide/formaldehyde reaction products A process for flameproofing wood is claimed, which comprises treating the wood with aqueous preparations which contain (a) at least one water-soluble ammonium salt of a non-volatile inorganic acid, e.g. ammonium sulfate or ammonium phosphate, (b) at least one ... | 11/17/1981 |
