Creosote, Wax, Oil, Asphalt, Or Bitumen Coating Patents (Class 427/298)
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Publication number: 20150132492Abstract: A method of preserving wood is provided. The method comprises the step of contacting the wood with an aqueous composition comprising (a) a wax having melting point higher than 75° C. and an average particle size no greater than 1 micron, (b) greater than 0.08% by weight, based on the weight of said aqueous composition, a nonionic surfactant having the formula R—O?CH2CH2O?xH ?wherein said R is an aliphatic group having 10 to 16 carbon atoms; wherein the average value of x is 4.5 to 5.5, and (c) one or more organic wood preservative.Type: ApplicationFiled: April 9, 2013Publication date: May 14, 2015Applicant: Rohm and Haas CompanyInventors: John W. Ashmore, David Laganella
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Patent number: 7993756Abstract: A composition is disclosed comprising a long-chain quaternary ammonium compound and a wood preservative active agent or a mixture thereof. The long-chain quaternary ammonium compound includes at least one alkyl moiety having from 16 to 50 carbon atoms, unsubstituted or substituted with one or more N, O, S, or halogen atoms. A method of treating wood is disclosed, comprising impregnating wood with the above composition in an amount effective to reduce the preservative active ingredient loss in the treated wood or to increase the resistance of the wood to decay. Treated wood and wood products are disclosed comprising wood impregnated with the above composition, including a treatment level of the long-chain quaternary ammonium compound effective to reduce the preservative active ingredient loss in the treated wood or to increase the resistance of the wood to decay.Type: GrantFiled: May 4, 2005Date of Patent: August 9, 2011Assignee: Viance, LLCInventors: Lehong Jin, Alan F. Preston, Kevin J. Archer, Futong Cui, Andrew R. Zahora, Paul J. Walcheski
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Publication number: 20100058694Abstract: The present invention discloses the composition of a one-component, solvent-free water repellent for sealing joint and cut edges and tongue and groove of laminate and parquet floor elements laid without adhesive. The water repellent consists of saturated fatty acids having at least 10 carbon atoms in proportions by mass of 60 to 95%, preferably stearic acid, and plasticizers in proportions by mass of 5 to 40%, and optionally dyes, wetting agents and preservatives. Paraffinic white oils and silicone oils are used as plasticizers.Type: ApplicationFiled: December 27, 2007Publication date: March 11, 2010Applicant: Bostik, S.A.Inventor: Franz Eiden
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Patent number: 7632567Abstract: Use of micronized zinc compounds in wood preservation treatments containing micronized copper compounds significantly increases the efficacy of the treatment with respect to that of the copper compounds alone. Micronized copper compounds used at a retention in the range of from 0.005 to 1 pounds per cubic foot (pcf) expressed as CuO equivalent, and zinc compounds are used at a retention in the range of from 0.005 to 1 pcf expressed as ZnO equivalent, the increase in wood preservation efficacy over similar retentions of copper compounds alone can be seen in as little as 24 months.Type: GrantFiled: August 31, 2007Date of Patent: December 15, 2009Assignee: Osmose, Inc.Inventors: Jun Zhang, Wenjin Zhang
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Patent number: 7427316Abstract: 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 preservative.Type: GrantFiled: December 21, 2006Date of Patent: September 23, 2008Assignee: E.I. du Pont de Nemours and CompanyInventors: Albert Gordon Anderson, John Feaster, Damini Patel, Mark Scialdone
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Patent number: 7297193Abstract: 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.Type: GrantFiled: January 22, 2007Date of Patent: November 20, 2007Assignee: Rohm and Haas CompanyInventors: John William Ashmore, David Michael Laganella
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Patent number: 7264886Abstract: 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 11, anionic surfactants, and water. Certain emulsion compositions as described in this specification posses the unique property of maintaining emulsion stability in wood preservatives during extended use in typical wood treatment processes. Water-repellant wood treated with the wax emulsions are described. A method of treating wood, comprising providing wood and treating the wood with the wax emulsion under conditions effective to increase its water repellency is also disclosed.Type: GrantFiled: May 14, 2003Date of Patent: September 4, 2007Assignee: Viance, LLCInventors: Futong Cui, Alan F. Preston, Kevin J. Archer, Paul Walcheski
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Patent number: 7175878Abstract: 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 from that of MgF2 (4, 4?), preparing the surface of the thus coated substrate, and depositing an outer MgF2 layer (5) without ionic assistance. The resulting antiglare stack on organic substrate exhibits good adherence and good scratch resistance. The invention is applicable to ophthalmic lenses.Type: GrantFiled: November 26, 2001Date of Patent: February 13, 2007Assignee: Essilor InternationalInventors: Yvon Helmstetter, Jean-Daniel Bernhard, Frederic Arrouy
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Patent number: 6821631Abstract: 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 been treated using the present method include a borate-silicate polymer within the substrate. When the present substrates are wood, wood products, or green lumber, they may be used to build structures.Type: GrantFiled: October 28, 2002Date of Patent: November 23, 2004Assignee: Wood treatment Products, Inc.Inventors: Robert N. Grantham, Robert R. Weaver, III
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Patent number: 6696102Abstract: 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 the preservative in the work tank at a predetermined level. Hot fluid and preservative is drawn under a vacuum, initially from the work tank. On filling a pressure vessel, a pressure pump then supplies the preservative and fluid mixture under pressure to the pressure vessel in which the wood or wood product is being treated. As the treatment process depletes the preservative in the fluid, through absorption in the wood, the depleted fluid is circulated back to the work tank where it is heated and more preservative is added to restore the concentration of preservative in the fluid to a desired level. The fluid, replenished with preservative, is then pumped into the pressure vessel.Type: GrantFiled: January 19, 2001Date of Patent: February 24, 2004Assignee: Premier Wood Treating, L.L.C.Inventor: James N. Ray
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Patent number: 6641927Abstract: 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 within the wood. The oil may be treated in advance of impregnation to initiate polymerization. Further, the wood may be surface treated with a more fully polymerized coating of oil. Pressure and vacuum may be applied in selected sequence to promote impregnation, and heat, blowing air, oxygen, Ultraviolet light, and other agents may be employed to promote polymerization of the treated wood within the pressure chamber during the impregnation process or outside of the pressure chamber after impregnation. Additional additives may be used to prevent pest infestations and the growth of fungi or to promote the migration of the oil into the wood.Type: GrantFiled: August 27, 2002Date of Patent: November 4, 2003Inventor: Lou A. T. Honary
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Patent number: 6596063Abstract: 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 melting point of the wax is preferably above 80° C. The addition of wax elevates the softening point and reduces the viscosity of the melt. Melts according to the invention do not tend to discolor even at the given temperatures of the loading treatment so that the wood treated with a melt of modified natural resin mainly retains its natural appearance.Type: GrantFiled: May 18, 2001Date of Patent: July 22, 2003Inventors: Markus Rettenbacher, Norbert Mundigler
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Publication number: 20030121445Abstract: A wood treatment composition for the preservation of wood comprises a mixture of creosote and a polymer which is miscible with the creosote at about 200° F. and does not substantially phase-separate when the wood treatment composition is under ambient conditions. The polymer may include, but is not limited to, ethylene vinyl acetate copolymers, ethylene methyl acrylate copolymers, ethylene ethyl acrylate copolymers, ethylene butyl acrylate copolymers, ethylene acrylic acid copolymers, ethylene methacrylic acid copolymers, ethylene methyl methacrylic acid copolymers, ethylene styrene interpolymers, styrene acrylic acid copolymers, styrene methacrylic acid copolymers, styrene methyl acrylate copolymers, styrene butadiene styrene block copolymers, styrene ethylene butylene styrene block copolymers, or a blend thereof. Preferably, the creosote is present in an amount of at least 50 percent by weight of the composition.Type: ApplicationFiled: August 8, 2002Publication date: July 3, 2003Applicant: Dow Global Technologies Inc.Inventors: Kenneth H. Herbert, David C. Kelley, Brad M. Moncla, Michelle Williamson
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Patent number: 6503306Abstract: 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 and oil containing a primary surfactant and an amphoteric additive, the pH of the emulsion being equal or approximately equal to the iso-electric point of the amphoteric additive. The compositions of the invention are particularly useful in the preservation of timber.Type: GrantFiled: November 27, 2000Date of Patent: January 7, 2003Assignee: Monash University Act 1958Inventor: John Bernard Watkins
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Patent number: 6348089Abstract: 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 described. The compositions according to the invention are easily preparable stable emulsions which are distinguished, inter alia, by good penetrability, strongly reduced odour of the treated woods, absence of annoying tar oil enrichments at the surface and strongly reduced “bleeding” of the treated wood at hot temperatures, considerably enhanced activity in spite of a lower coal-tar oil content and reduced toxicity compared to pure coal-tar oil.Type: GrantFiled: October 6, 2000Date of Patent: February 19, 2002Assignees: Lonza AG, Impragnierwerk Wulknitz GmbHInventors: Hans-Norbert Marx, Tilo Vogel, Oliver Arlt, Florian Lichtenberg
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Patent number: 6274199Abstract: 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 to remove air in the pores of the substrate; (b) contacting the substrate in the vessel, while reduced pressure is present in the vessel, with the formulation to allow the formulation to flow into said pores, said contacting being carried out at a temperature at or above that required to cause the wax to change into a molten state; (c) applying a positive pressure to the vessel to force the formulation into said pores; and (d) releasing the pressure in the vessel and removing the resultant wood substrate from the vessel.Type: GrantFiled: January 19, 1999Date of Patent: August 14, 2001Assignee: Chemical Specialties, Inc.Inventors: Alan F. Preston, Futong Cui, Andrew R. Zahora
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Patent number: 6235403Abstract: 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 vessel (8) is pressurized, for example by blowing the preservative out of the vessel at the treatment pressure using a pump (10). Kickback may be segregated from the wood once pressure is reduced after the separation of wood and preservative. In another aspect the wood is impregnated with a waterborne preservative and with oil, each of the impregnating steps being performed under pressure and the oil being heated. If the preservative is one such as CCA which is capable of being fixed to the wood the hot oil may enhance this as well as providing water repellency. The oil may be a process oil.Type: GrantFiled: May 5, 1998Date of Patent: May 22, 2001Assignees: The University of Melbourne, Chemica LimitedInventors: Peter Vinden, Peter R. S. Cobham, Francisco J. Romero
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Patent number: 5824370Abstract: 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 particularly relates to steps which are taken to reduce the level of any contamination of the aqueous heat transfer fluid resulting from any wood extractives, any unfixed preservative and/or any particulate matter (i.e. "sludge") that may be present in the fluid. The contamination is preferably reduced by incorporating in the heat transfer fluid an oxidant which will preferentially oxidize any wood extractives resulting from the contact of the treated wood with the fluid without any significant reaction occurring between the oxidant and the preservative. Useful oxidants include inorganic chlorate salts such as sodium chlorate.Type: GrantFiled: February 26, 1997Date of Patent: October 20, 1998Assignee: Chemical Specialties, Inc.Inventors: Anthony J. Bergervoet, James L. Marcinko, Paul Joseph Walcheski
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Patent number: 5783258Abstract: 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, and thus lubricates the cell structure of the wood. The method is particularly well suited to the treatment of wood flooring blocks, since the white mineral oil is non-toxic and does not pose health or environmental hazards. A fungicide may be added to the treatment composition to inhibit the formation of mold.Type: GrantFiled: March 6, 1997Date of Patent: July 21, 1998Inventor: Ronald T. Garapick
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Patent number: 5652023Abstract: 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; contacts the treated wood in the fixation vessel with an aqueous liquid heating medium preheated to a temperature of about 130.degree. to no more than about 200.degree. F. for a period of thirty minutes to about two hours; removes the aqueous liquid heating medium from the fixation vessel; applies a vacuum in the range of 10-30" Hg for a duration of up to about 30 minutes; and rinses the treated and fixed wood in said fixation vessel with heated clean water, heated to a temperature of about 200.degree. F.Type: GrantFiled: February 29, 1996Date of Patent: July 29, 1997Assignee: Chemical Specialties, Inc.Inventors: Anthony J. Bergervoet, James L. Marcinko, Paul Joseph Walcheski
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Patent number: 5281439Abstract: 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 divided particles dispersed in a carrier liquid, which preferably contains an organic compound,placing a substrate inside an enclosure,creating a vacuum inside the enclosure, andcausing the slurry to pass through the substrate by means of a pressure difference.Uniformity of charge integration is ensured by forcing the slurry to pass through the substrate several times, in successively opposite directions. The concentration of solid charge in the slurry can be determined as a function of an intended charge percentage by volume in said substrate.Type: GrantFiled: June 16, 1992Date of Patent: January 25, 1994Assignee: Societe Europeenne de PropulsionInventors: Jean-Luc Leluan, Jacques Rey, Christian Bertone, Bruno Bernard
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Patent number: 4668539Abstract: 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 the process and returning said recovered naphthalene portion to the impregnation phase of said process.Type: GrantFiled: December 30, 1985Date of Patent: May 26, 1987Assignee: Kerr-McGee Chemical CorporationInventors: Robert E. Leonard, William H. Lamansky
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Patent number: 4542046Abstract: 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 tank being capable of supporting a pressure difference between the interior space and the exterior of the tank. The apparatus contains a device for supplying liquid to and receiving from the interior space of the tank, a device for establishing a pressure difference between the interior space and the exterior of the tank, a structure which is disposed in the interior space for holding wood to be treated and a structure supporting the holding structure to permit rotation of the holding structure about a non-vertical axis while holding wood to be treated.Type: GrantFiled: June 29, 1982Date of Patent: September 17, 1985Inventor: Niels Moldrup
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Patent number: 4464424Abstract: 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 therefrom.Type: GrantFiled: December 22, 1981Date of Patent: August 7, 1984Assignee: Aoi Chemical, Inc.Inventors: Hazime Niwa, Saburo Furukawa
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Patent number: 4371572Abstract: 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 treatment process is carried out until the moisture content of the wood decreases below the fiber saturation point.Type: GrantFiled: February 18, 1981Date of Patent: February 1, 1983Inventor: Bror O. Hager
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Patent number: 4364975Abstract: 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 bottom heaters and a solution of solvent and asphalt or the like is pumped into the tank, then removed. The top of the tank is sealed and a heating medium is pumped through the heaters, while a vacuum pump is started to produce a vacuum inside the tank and suction exerted for evaporating solvent. One or two condensers, between the tank and the vacuum pump, condense the solvent vapors for collection and reuse. With one condenser, an excess condensate tank is connected to the lower condensate section of the condenser. A valved pipe connecting with the pipe between a lower condensate section of the condenser and the vacuum pump is utilized to bleed air into the tank after treatment and may be used to control the initial vacuum applied.Type: GrantFiled: June 29, 1981Date of Patent: December 21, 1982Assignee: W. R. Meadows, Inc.Inventors: Dale J. Cork, Russell Pellman, deceased
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Patent number: 4323602Abstract: A combined water repellent and preservative for wood prepared in a concentrate for mixing with water and utilizing 3-iodo-2-propynyl butyl carbamate.Type: GrantFiled: May 14, 1980Date of Patent: April 6, 1982Assignee: Roberts Consolidated Industries, Inc.Inventor: Thomas G. Parker
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Patent number: 4305978Abstract: An improved wood preservation process is disclosed wherein wood is contacted with an emulsion of an oil-based perservative in water.Type: GrantFiled: February 29, 1980Date of Patent: December 15, 1981Inventor: Bror O. Hager
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Patent number: 4233929Abstract: 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 for spraying the timber with a preservative liquid in an intermediate chamber, the vacuums being maintained during passage of the timber through the end chambers, by means of seals which are arranged to close and open automatically as the timber enters and leaves the respective vacuum chambers.Type: GrantFiled: January 8, 1979Date of Patent: November 18, 1980Assignee: Protim International LimitedInventors: Robert G. Hurst, Alan L. Pinner
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Patent number: 4142009Abstract: 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 methylene chloride or a liquified butane or propane for use in a double vacuum treatment of the timber. The agent may be an alkyd resin or colloidal pigment of a defined mean particle size, or both.Type: GrantFiled: May 24, 1977Date of Patent: February 27, 1979Assignee: Fosroc International LimitedInventors: Colin T. Kyte, Geoffrey J. Lewis, Edgar Pearce, Keith Hume
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Patent number: 4062991Abstract: 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 methylene chloride or a liquified butane or propane for use in a double vacuum treatment of the timber. The agent may be an alkyd resin or colloidal pigment of a defined mean particle size, or both.Type: GrantFiled: August 13, 1974Date of Patent: December 13, 1977Assignee: Fosroc A.G.Inventors: Colin Trevor Kyte, Geoffrey John Lewis, Edgar Pearce, Keith Hume
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Patent number: 3995077Abstract: 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 impregnation step.Type: GrantFiled: July 24, 1975Date of Patent: November 30, 1976Assignee: Hager AktiebolagInventor: Bror Olof Hager
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Patent number: 3953642Abstract: 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 when subjected to the localized pressure of a writing instrument becomes relatively transparent in the region where the pressure is applied, to make distinct the colored medium distributed in the recording sheet.Type: GrantFiled: January 9, 1974Date of Patent: April 27, 1976Assignee: Crown Zellerbach CorporationInventors: Dennis L. Forbess, John E. Hanby
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Patent number: RE30658Abstract: An apparatus for treating work pieces in a closed space having a collapsible material. The treatment utilizes a period of subpressure and a period of pressure, in which cavities in the pieces are more or less filled with liquid. Prior to this the cavities are wholly or partially filled with a surface-tension reducing gas and/or solution.Type: GrantFiled: November 1, 1978Date of Patent: June 30, 1981Inventor: Karl E. Arvidsson