Patents Assigned to Weyerhaeuser NR Company
  • Patent number: 10414945
    Abstract: A composite wood product in accordance with a particular embodiment of the present technology includes a composite substrate and a sealant disposed within a surface portion of the substrate. The substrate includes wood and a binder. The sealant includes photoresponsive molecules present within the surface portion of the substrate at an average concentration greater than 1000 parts per million. In response to a 120-day exposure at 7 inches separation distance to a UV lamp with a UVA (315-400 nm) output of 13.6 W and a UVB (280-315 nm) output of 3.0 W, a CIELab b* value of the substrate decreases by a first amount, a CIELab b* value of the sealant increases by a second amount, and a CIELab b* value of the overall wood product decreases by an amount less than the first amount, increases by an amount less than the second amount, or is unchanged.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: September 17, 2019
    Assignee: Weyerhaeuser NR Company
    Inventors: Jack G. Winterowd, Erik M. Parker, Glen D. Robak, Jeffrey Smith, William D. Brady
  • Patent number: 9830514
    Abstract: A system for analyzing remotely sensed photos of a forest or other areas of interest uses a computer system to increase the variation in NIR data having values that represent items of interest. In one embodiment, a computer system applies a stretching function to the NIR data to increase their variation. The objective spectral stretched NIR data is used to differentiate different types of vegetation in the remotely sensed image. Objective-based Vegetation Index (OVI) values are calculated from the objective spectral stretched NIR data that allow different types of vegetation to be distinguished. In one embodiment, the OVI values are used to differentiate hardwoods from conifers in a digital aerial photo of a forest.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: November 28, 2017
    Assignee: Weyerhaeuser NR Company
    Inventors: Zhenkui Ma, Yuzhen Li
  • Patent number: 9827643
    Abstract: Sawmill auditing and control apparatus and methods employ information from one or more scan zones and/or controllers (e.g., PLCs). Boards may be logically associated with mill equipment which produced the boards, allowing defects or imperfections to be tied to certain equipment. For example, boards may be associated with a primary breakdown machine or a gangsaw, or with a pair of cutters (e.g., saws, chip heads). Such allows auditing of mill operations to identify improperly functioning machinery or out of tolerance conditions, to correct such, and/or provide notification.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: November 28, 2017
    Assignee: Weyerhaeuser NR Company
    Inventor: Earl Barker
  • Patent number: 9777200
    Abstract: Disclosed herein are adhesives, wood-based composites incorporating the adhesives, and methods of forming wood-based composites using the adhesives. Wood-based composites formed using the adhesives demonstrate an optimal combination of characteristics desirable to the wood products industry. Specifically, the wood products formed using the adhesive demonstrate (1) a light appearance when wet; (2) relatively low moisture content after soaking in water; (3) relatively little thickness swelling after soaking in water; and (4) minimal adhesion to metal press platens during press-forming of the wood products.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: October 3, 2017
    Assignee: Weyerhaeuser NR Company
    Inventors: Jack Winterowd, Erik M. Parker
  • Publication number: 20170247839
    Abstract: A pulp in accordance with a particular embodiment includes crosslinked cellulose fibers. The pulp can have high brightness, reactivity, and intrinsic viscosity. The pulp, therefore, can be well suited for use as a precursor in the production of low-color, high-viscosity cellulose derivatives. A method in accordance with a particular embodiment of the present technology includes forming a pulp from a cellulosic feedstock, bleaching the pulp, crosslinking cellulose fibers within the pulp while the pulp has a high consistency, and drying the pulp. The bleaching process can reduce a lignin content of the pulp to less than or equal to 0.09% by oven-dried weight of the crosslinked cellulose fibers. Crosslinking the cellulose fibers can include exposing the cellulose fibers to a glycidyl ether crosslinker having two or more glycidyl groups and a molecular weight per epoxide within a range from 140 to 175.
    Type: Application
    Filed: March 11, 2016
    Publication date: August 31, 2017
    Applicant: WEYERHAEUSER NR COMPANY
    Inventor: Mengkui Lou
  • Publication number: 20170247833
    Abstract: A pulp in accordance with a particular embodiment includes crosslinked cellulose fibers. The pulp can have high brightness, reactivity, and intrinsic viscosity. The pulp, therefore, can be well suited for use as a precursor in the production of low-color, high-viscosity cellulose derivatives. A method in accordance with a particular embodiment of the present technology includes forming a pulp from a cellulosic feedstock, bleaching the pulp, crosslinking cellulose fibers within the pulp while the pulp has a high consistency, and drying the pulp. The bleaching process can reduce a lignin content of the pulp to less than or equal to 0.09% by oven-dried weight of the crosslinked cellulose fibers. Crosslinking the cellulose fibers can include exposing the cellulose fibers to a glycidyl ether crosslinker having two or more glycidyl groups and a molecular weight per epoxide within a range from 140 to 175.
    Type: Application
    Filed: March 11, 2016
    Publication date: August 31, 2017
    Applicant: WEYERHAEUSER NR COMPANY
    Inventor: Mengkui Lou
  • Publication number: 20170191028
    Abstract: Methods of developing plant somatic embryos include incubating the plant somatic embryos at a first temperature for a first period of time followed by storing the plant somatic embryos at a second temperature for a second period of time. The first temperature can be in the range of about 23° C. to 30° C. and leads to rapid plant somatic embryo growth. The second temperature can be in the range of about 8° C. to 15° C. and slows plant somatic embryo development. Plant somatic embryos developed in this manner and implanted in artificial seeds show germination rates similar to zygotic embryos implanted in artificial seeds.
    Type: Application
    Filed: November 9, 2016
    Publication date: July 6, 2017
    Applicant: Weyerhaeuser NR Company
    Inventor: Pramod K. GUPTA
  • Publication number: 20170183817
    Abstract: Methods of forming crosslinked cellulose include mixing a crosslinking agent with cellulose mat fiber fragments composed of hydrogen-bonded cellulose fibers and having a solids content of about 45-95% to form a substantially homogenous mixture of non-crosslinked, individualized cellulose fibers, drying the resulting mixture to 85-100% solids, then curing the dried mixture under conditions effective to crosslink the cellulose fibers. Some of such methods may include fragmenting a cellulose fiber mat to form the mat fragments. Systems include a mixing unit (such as a high-consistency mixer) configured to form, from the mat fragments and a crosslinking agent, a substantially homogenous mixture of non-crosslinked, individualized cellulose fibers and crosslinking agent, at ambient conditions, a drying unit to dry the substantially homogenous mixture to a consistency of 85-100%, and a curing unit and to cure the crosslinking agent to form dried and cured crosslinked cellulose fibers.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Applicant: WEYERHAEUSER NR COMPANY
    Inventors: Charles E. Miller, Alan D. Lovas
  • Patent number: 9688953
    Abstract: Separating and singulating embryos employs a spray module configured to spray a plurality of embryos which are loaded on a porous substrate so as to separate and singulate the plurality of embryos, and a drying module configured to dry the plurality of separated and singulated embryos retained on the porous substrate while the porous substrate is moved across the drying module. A robotic arm operates to transfer the porous substrate from module to module, and a control device controls the operation of the system of separating and singulating embryos.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: June 27, 2017
    Assignee: Weyerhaeuser NR Company
    Inventors: Anthony P. Swanda, Henry M. Givens
  • Publication number: 20170175076
    Abstract: Provided is a method of improving plant embryo development and/or germination. The method comprises developing plant embryos in the presence of nitric oxide (NO). The method entails the step of incubating plant embryogenic suspensor mass (ESM) in, or on, a development medium containing a nitric oxide donor for a period of time to develop mature somatic embryos. The method disclosed herein improves the yield and/or the germination frequency of plant embryos as compared to plant embryos developed by conventional methods without a nitric oxide donor in the medium.
    Type: Application
    Filed: November 8, 2016
    Publication date: June 22, 2017
    Applicant: Weyerhaeuser NR Company
    Inventor: Pramod Gupta
  • Patent number: 9663943
    Abstract: A building product having improved fire resistance by virtue of solid fire-resistant cladding material attached to at least a portion of one or more surfaces of the building product. The solid fire-resistant cladding material includes wood fiber and binder. The building product can be a wood-based building product, and can be in the form of an I-joist. When an I-joist is used, the solid fire-resistant cladding material can be attached to, for example, the web of the I-joist.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: May 30, 2017
    Assignee: Weyerhaeuser NR Company
    Inventors: Alkiviadis George Dimakis, Travis E. Bjorkman, Glen Robak, Jack G. Winterowd, Erik M. Parker, Derik Rieger
  • Patent number: 9606236
    Abstract: Disclosed is a system and method for processing LiDAR return data prior to analyzing the data to detect planted trees. LiDAR return data for an area in question is filtered to remove data that are not within a predetermined area of where trees have been planted. Planting data such as GPS data that is collected by tractors or other equipment records the location of where trees are planted. The planting data is used to filter the LiDAR return data by eliminating or ignoring LiDAR return data that are not within a buffer zone around the location where the trees have been planted. Once filtered, the LiDAR return data can be analyzed to detect trees or other items of interest in the LiDAR return data.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: March 28, 2017
    Assignee: Weyerhaeuser NR Company
    Inventor: Julio C. Rojas
  • Patent number: 9606098
    Abstract: A moisture content indicator for visually indicating the moisture content of a wood substrate and methods of making the moisture content indicator are provided.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 28, 2017
    Assignee: Weyerhaeuser NR Company
    Inventors: Jack G. Winterowd, Erik M. Parker, Malinda J. De Lashmutt, Wayne Lindell, Tri Tran
  • Publication number: 20170081844
    Abstract: A building product having improved fire resistance by virtue of solid fire-resistant cladding material attached to at least a portion of one or more surfaces of the building product. The solid fire-resistant cladding material includes wood fiber and binder. The building product can be a wood-based building product, and can be in the form of an I-joist. When an I-joist is used, the solid fire-resistant cladding material can be attached to, for example, the web of the I-joist.
    Type: Application
    Filed: September 23, 2015
    Publication date: March 23, 2017
    Applicant: WEYERHAEUSER NR COMPANY
    Inventors: Alkiviadis George DIMAKIS, Travis E. BJORKMAN, Glen ROBAK, Jack G. WINTEROWD, Erik M. PARKER, Derik Rieger
  • Publication number: 20170066865
    Abstract: Grafted, crosslinked cellulosic materials include cellulose fibers and polymer chains composed of at least one monoethylenically unsaturated acid group-containing monomer (such as acrylic acid) grafted thereto, in which one or more of said cellulose fibers and said polymer chains are crosslinked (such as by intra-fiber chain-to-chain crosslinks). Some of such materials are characterized by a wet bulk of about 10.0-17.0 cm3/g, an IPRP value of about 1000 to 7700 cm2/MPa·sec, and/or a MAP value of about 7.0 to 38 cm H2O. Methods for producing such materials may include grafting polymer chains from a cellulosic substrate, followed by treating the grafted material with a crosslinking agent adapted to effect crosslinking of one or more of the cellulosic substrate or the polymer chains. Example crosslinking mechanisms include esterfication reactions, ionic reactions, and radical reactions, and example crosslinking agents include pentaerythritol, homopolymers of the graft species monomer, and hyperbranched polymers.
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Applicant: WEYERHAEUSER NR COMPANY
    Inventors: Karen Brogan, Charles E. Miller, Angel Stoyanov, Torsten Linder, Maike Siemons
  • Patent number: 9572300
    Abstract: Methods of transferring a plurality of plant somatic embryos to germination medium are provided.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: February 21, 2017
    Assignee: Weyerhaeuser NR Company
    Inventors: Amy M. Jamruszka-Lewis, Robert A. Starr
  • Publication number: 20170022314
    Abstract: Grafted, crosslinked cellulosic materials include cellulose fibers and polymer chains composed of at least one monoethylenically unsaturated acid group-containing monomer (such as acrylic acid) grafted thereto, in which one or more of said cellulose fibers and said polymer chains are crosslinked (such as by intra-fiber chain-to-chain crosslinks). Some of such materials are characterized by a wet bulk of about 10.0-17.0 cm3/g, an IPRP value of about 1000 to 7700 cm2/MPa·sec, and/or a MAP value of about 7.0 to 38 cm H2O. Methods for producing such materials may include grafting polymer chains from a cellulosic substrate, followed by treating the grafted material with a crosslinking agent adapted to effect crosslinking of one or more of the cellulosic substrate or the polymer chains. Example crosslinking mechanisms include esterfication reactions, ionic reactions, and radical reactions, and example crosslinking agents include pentaerythritol, homopolymers of the graft species monomer, and hyperbranched polymers.
    Type: Application
    Filed: July 24, 2015
    Publication date: January 26, 2017
    Applicant: WEYERHAEUSER NR COMPANY
    Inventors: Karen BROGAN, Charles E. MILLER, Angel STOYANOV, Torsten LINDER, Maike SIEMONS
  • Patent number: 9532501
    Abstract: A conveyor includes a frame, at least two arms at least one of which is movably mounted to the frame, at least two rails wherein each rail is coupled to an end of one of said at least two arms, at least two belts wherein each belt is rotatably mounted on one of said at least two rails such that the belts are capable of engaging plants therebetween and moving the plants along a conveyor axis, and one or more bias members which are configured to bias said at least one movable arm toward the other one of said at least two arms. The conveyor further comprises an expanding mechanism which is configured to exert an outward force on said at least one movable arm upon engagement so that said at least one movable arm move away from another arm.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: January 3, 2017
    Assignee: Weyerhaeuser NR Company
    Inventors: Bruce Francis, William Wells, Jimmy Lee Stokes
  • Publication number: 20160369454
    Abstract: Methods of forming crosslinked cellulose include mixing a crosslinking agent with an aqueous mixture of cellulose fibers containing little to no excess water (e.g., solids content of 25-55%), drying the resulting mixture to 85-100% solids, then curing the dried mixture to crosslink the cellulose fibers. Systems include a mixing unit to form, from an aqueous mixture of unbonded cellulose fibers having a solids content of about 25-55% and a crosslinking agent, a substantially homogenous mixture of non-crosslinked, unbonded cellulose fibers and crosslinking agent; a drying unit to dry the substantially homogenous mixture to a consistency of 85-100%; and a curing unit and to cure the crosslinking agent to form dried and cured crosslinked cellulose fibers. Intrafiber crosslinked cellulose pulp fibers produced by such methods and/or systems have a chemical on pulp level of about 2-14% and an AFAQ capacity of at least 12.0 g/g.
    Type: Application
    Filed: August 31, 2016
    Publication date: December 22, 2016
    Applicant: WEYERHAEUSER NR COMPANY
    Inventor: Charles E. Miller
  • Patent number: 9518185
    Abstract: Disclosed herein are adhesives, wood-based composites incorporating the adhesives, and methods of forming wood-based composites using the adhesives. In some embodiments, an adhesive emulsion includes a continuous phase having an aqueous, alkaline solution that includes a melamine/urea/formaldehyde (“MUF”) resin, and a dispersed phase that includes a multifunctional aromatic isocyanate component. The solution including the MUF resin has a percent solids content of about 1.0% to about 90.0%, and the MUF resin and the multifunctional aromatic isocyanate component are present in a ratio of about 92:8 to about 40:60 on a solids mass basis. Wood-based composites formed using the adhesives demonstrate an optimal combination of characteristics desirable to the wood products industry.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: December 13, 2016
    Assignee: Weyerhaeuser NR Company
    Inventors: Jack G. Winterowd, Erik M. Parker