Patents Assigned to Weyerhaeuser
  • Patent number: 6709203
    Abstract: An apparatus for directing objects carried serially by a fluid to a desired designation is provided. The apparatus includes an upstream fluid conduit and first and second downstream conduits. The apparatus also includes a sensor associated with the upstream fluid conduit operable to provide information regarding an object at a location in the upstream conduit. A switch is coupled to the upstream fluid conduit and selectively operable to deliver the object from the upstream fluid conduit to either the first or second downstream fluid conduit according to the information by applying a force to at least one of the upstream or downstream fluid conduits.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: March 23, 2004
    Assignee: Weyerhaeuser
    Inventor: Michael McKinnis
  • Patent number: 6471121
    Abstract: A container is described having a series of bottom panels and a center divider. The center divider divides the container into compartments. Extended outer end panels are provided at the end edges of one compartment, and unextended outer end panels are provided at the end edges of an adjacent compartment. The unextended end panels have inner end panels attached to their outermost edges. Each of the extended outer end panels includes an extension portion. As assembled, these extension portions are sandwiched between their respective unextended outer end panel and its inner end panel. Various embodiments are presented, including one in which minor end flaps are used at the end edges of a center divider panel and inner end panels are attached to the outer edges of the extended end panels. As assembled, the minor end panels are sandwiched between their respective extended outer end panel and its inner end panel.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: October 29, 2002
    Assignee: Weyerhaeuser
    Inventor: Roderick S. Nielsen
  • Patent number: 6461553
    Abstract: A binder is applied to particles which are then combined with fibers to bind the particles to the fibers. The particles have functional sites for forming a hydrogen bond or a coordinate covalent bond. The fibers have hydrogen bonding functional sites. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers may be adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder in turn may be adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: October 8, 2002
    Assignee: Weyerhaeuser
    Inventors: Michael R. Hansen, Richard H. Young, Sr.
  • Patent number: 6455622
    Abstract: An anticorrosion formulation for coating wood based panels to inhibit the corrosion of metallic members in contact with the panel is disclosed. In one embodiment, the formulation includes water, a binding agent, boric acid, and a group II metal hydroxide selected from beryllium hydroxide, magnesium hydroxide, calcium hydroxide, strontium hydroxide, and barium hydroxide. A wood-based panel coated with the anticorrosion formulation and a method for forming the coated panel are provided.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: September 24, 2002
    Assignee: Weyerhaeuser
    Inventors: Jack G. Winterowd, Jerry D. Izan, Charles E. Lewis, Roger M. Shantz
  • Patent number: 6444314
    Abstract: The present invention is directed to lyocell fibers having a high hemicellulose content of at least 5%, a low lignin content as measured by a kappa number less than 2.0 and including cellulose that has a low average degree of polymerization (D.P.) in the range of 200 to 1100. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: September 3, 2002
    Assignee: Weyerhaeuser
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Patent number: 6440523
    Abstract: The present invention provides lyocell fibers made from compositions having a high hemicellulose content of at least 5% by weight, a low kappa number of less than 2.0 and including cellulose that has a low average degree of polymerization (D.P.) value of about 200 to 1,100, and a narrow molecular weight distribution ( R) of less than 2.8.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: August 27, 2002
    Assignee: Weyerhaeuser
    Inventors: James E. Sealey, II, W. Harvey Persinger, Jr., Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi
  • Patent number: 6440547
    Abstract: The present invention provides lyocell films, having a high hemicellulose content of at least 5%, a low copper number of less than 2, and including cellulose that has a low average degree of polymerization (D.P.) in the range of about 200 to 1100.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: August 27, 2002
    Assignee: Weyerhaeuser
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Patent number: 6436231
    Abstract: An apparatus is disclosed for preparing a quantity of individual treated fibers from one or more fiber mats. The apparatus comprises a fiber treatment zone, and a conveyor for conveying each mat through the fiber treatment zone. In the treatment zone each mat is impregnated by an applicator with a treatment material, such as a crosslinking substance, and conveyed directly to an attrition device. The attrition device fiberizes the mats to form a fiber output having a low nit level, such as no more than about three, and a dryer both dries the fiber output and cures the crosslinking substance. The fiberizer is configured to minimize the accumulation of fiber at locations therein. Fiber is transported from the attrition device to the dryer at a high velocity under reduced pressure to promote drying. A heated retention bin is provided after drying to increase curing time in the system. A thermobonding agent may be added to the dried and cured fibers to enhance the wet strength of webs made from the fiber.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: August 20, 2002
    Assignee: Weyerhaeuser
    Inventors: Peter A. Graef, Colin Elston, Fred E. Olmstead, Clifford R. Bolstad, Mark W. Bowns, Frank R. Hunter, Allan R. Carney
  • Patent number: 5759828
    Abstract: The present invention provides the nucleotide sequences of Acetobacter operons, cdg operons encoding genes for the biosynthesis and degradation of cyclic diguanosine monophosphate (c-di-GMP). Specifically, the nucleotide sequences and deduced amino acid sequences of 3 phosphodiesterases isozymes, 3 diguanylate cyclase isozymes, and 2 polypeptides of unidentified function are provided. Also provided for are various strains of microorganisms, including Acetobacter cells genetically manipulated so as to produce elevated and/or reduced levels of one or more cdg operon encoded proteins.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: June 2, 1998
    Assignee: Weyerhaeuser
    Inventors: Rony Tal, David H. Gelfand, Roger D. Calhoon, Arie Ben-Bassat, Moshe Benziman, Hing Cheung Wong