Patents Represented by Attorney, Agent or Law Firm R. L. Schmalz
  • Method of making a composite paperboard structure with a silicon-oxide-coated film for improving the shelf life of oxygen-sensitive products
    Patent number: 6093274
    Abstract: This invention relates to paperboard composite structures with a glass-coated film. Such structures of this type, generally, improve the shelf life of refrigerated and other oxygen-sensitive products and provide a barrier to flavors and fragrances to maintain product quality.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: July 25, 2000
    Assignee: Westvaco Corporation
    Inventors: Christopher Jude Parks, Ralph Scott Peterson
  • Integrated measuring system package
    Patent number: 6089416
    Abstract: This invention relates to packages which are designed to dispense a pre-determined amount of product. Such structures of this type, generally, include a series of internal folds that allow a pre-determined amount of product to be loaded into the dispensing chamber. This pre-determined amount is then dispersed from the dispensing chamber by the end-user until the chamber is empty.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: July 18, 2000
    Assignee: Westvaco Corporation
    Inventor: Mark Mellon
  • Self-locking paperboard pail-like container and product thereof
    Patent number: 6050483
    Abstract: This invention relates to paperboard containers. Such structures of this type, generally, allow for the container to be formed into a self-locking, pail-like container for holding food stuffs.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: April 18, 2000
    Assignee: Westvaco Corporation
    Inventors: Rune Karl Haraldsson, Kenneth James Reeves, Arthur Winfield Twitchell
  • Apparatus and method for sealing of paperboard containers using induction heated metal bands
    Patent number: 6050055
    Abstract: Using induction heaters, two rotating metal bands are heated to a target temperature, continuously sensed by infrared temperature probes and then compressed on either side of a mated pair of paperboard carton flanges in an extended nip. The mated paperboard flange area is then heated by conduction from the metal bands to the activation temperature of the coating material to form a uniform bond between the paperboard surfaces.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: April 18, 2000
    Assignee: Westvaco Corporation
    Inventors: Barry Gene Calvert, Richard Eric Nordgren
  • Bagless barrier paperboard container with a tamper evident reclosable fitment
    Patent number: 6047883
    Abstract: This invention relates to a fin sealed box, an integrate barrier coating and a relockable fitment closure that are combine to create a novel package which is easily formed, filled and sealed by the packager and easily opened and reclosed by the consumer. Such structures of this type, generally, employ reclose feature such as an audibly relockable fitment breakaway button snap, an tear-away tab, to add even more convenience and tamper-evidence for the consumer.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: April 11, 2000
    Assignee: Westvaco Corporation
    Inventors: Barry Gene Calvert, Janice Lynn Kirkham, Jack Leong Hung Lum
  • Unit dose packaging system (UDPS) having a child resistant locking feature
    Patent number: 6047829
    Abstract: This invention relates to a two piece paperboard package that houses a unit dose product on an internal slide card within an outer paperboard shell. This package may have one or more internal or external lock(s) that prevent the slide card from being pulled out without triggering some type of lock release mechanism. This package is focused around providing a child resistant, senior-friendly unit dose package that can be opened and closed numerous times and then finally disposed of.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: April 11, 2000
    Assignee: Westvaco Corporation
    Inventors: Scott Bowen Johnstone, Brad Allen Jones, Mark Mellon, William Roger Rigby
  • Process for making and detecting anti-counterfeit paper
    Patent number: 6045656
    Abstract: This invention relates to a method for producing anti-counterfeit paper. Such processes of this type, generally, add a certain percentage of wood fiber lumens which have been loaded with one or more fluorescent agents. These wood fiber lumens would look normal under regular light, but will glow when exposed to various manners of radiation.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 4, 2000
    Assignee: Westvaco Corporation
    Inventors: James Joseph Foster, Leo Thomas Mulcahy
  • Paperboard carrier for static cling vinyl products
    Patent number: 6015044
    Abstract: This invention relates to paperboard materials for carrying static cling vinyl products for transport to end users. Such structures of this type, generally, provide good adhesion for the static cling vinyl product, but allow the vinyl product to be peeled off easily.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: January 18, 2000
    Assignee: Westvaco Corporation
    Inventor: Ralph Scott Peterson
  • Paperboard laminate for pharmaceutical blister packaging using a hot melt adhesive and calcium carbonate blend
    Patent number: 6010784
    Abstract: This invention relates to paperboard laminates for pharmaceutical blister packaging. Such structures of this type, generally, employ a hot melt adhesive and calcium carbonate (CaCO.sub.3) blend which is capable of sealing to polytrichlorofluoroethylene (Aclar.RTM.). Aclar.RTM. film is commonly used for high moisture barrier packaging in pharmaceutical applications.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: January 4, 2000
    Assignee: Westvaco Corporation
    Inventor: Ralph Scott Peterson
  • Carton sealing method utilizing radiation curable pressure-sensitive adhesives
    Patent number: 6007658
    Abstract: This invention relates sealing of paperboard cartons in order to form an integral structural. Such structures of this type, generally, employ the use of radiation curable, pressure-sensitive adhesives and "spot curing" of the adhesives in order to seal and form the carton.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: December 28, 1999
    Assignee: Westvaco Corporation
    Inventor: Barry Gene Calvert
  • On-line dense paste rheological testing apparatus and method
    Patent number: 5996404
    Abstract: This invention relates to an on-line instrument that is able to sample the contents of a dense paste-like material, isolate the material, measure the material's rheological properties by extruding it under pressure and perform a self-cleaning operation. Such structures of this type, generally, provide precise measurements of the material's rheological properties (deformation and flow under pressure) such as yield stress, yield pressure, viscosity or Bingham number.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: December 7, 1999
    Assignee: Westvaco Corporation
    Inventors: John Craig McCue, Richard Eric Nordgren
  • Adjustable web cutter
    Patent number: 5975456
    Abstract: An adjustable web cutter which allows web samples to be cut in various lengths, width and thickness while employing a disposable cutter blade.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: November 2, 1999
    Assignee: Westvaco Corporation
    Inventors: Elizabeth Tucker Bodkin, Andy Theodore Davis, Clifford Brooks Persinger
  • Paperboard blank for a self-contained, reclosable package
    Patent number: 5954202
    Abstract: This invention relates to paperboard blanks which are used to form self-contained, reclosable packages. Such structures of this type, generally, are comprised of one piece of paperboard that when folded acts as an outer package when sealed and an innovative reclosable package after being opened.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: September 21, 1999
    Assignee: Westvaco Corporation
    Inventor: Mark Mellon
  • Rehydration of once-dried fiber
    Patent number: 5925218
    Abstract: This invention relates to the rehydration of once-dried fiber for use in a papermaking furnish. Such a rehydration of this type, generally, employs temperature, pressure and refining to make the once-dried fiber behave more like a virgin fiber. Thus, higher levels of once-dried fiber can be used without sacrificing paper formation, surface smoothness, and productivity (drainage).
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: July 20, 1999
    Assignee: Westvaco Corporation
    Inventor: Roger Wayne Ogden
  • Method of producing paperboard packaging with an improved sizing layer including a styrene maleic anhydride binder for reduced edgewicking
    Patent number: 5916637
    Abstract: This invention relates to substrates for paperboard packaging having a press-applied barrier coating. Such structures of this type, generally, reduce the edgewick in the paperboard package such that catastrophic failure of the paperboard package is substantially reduced.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: June 29, 1999
    Assignee: Westvaco Corporation
    Inventor: Robinson Camden Perkins Claytor
  • Calendering system using hard and soft nips
    Patent number: 5916419
    Abstract: This invention relates to calendering systems. Such structures of this type, generally, employ the use of hard and soft nips acting on a heated roll to provide excellent smoothness without gloss mottle.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: June 29, 1999
    Assignee: Westvaco Corporation
    Inventors: Stephen Nicholson, Steven Herman Parker, Domenick Larry Raschella, Sharon Rae Stampfl
  • Base stock packaging structure including a colloidal copolymer for increased hold-out
    Patent number: 5882768
    Abstract: This invention relates to the use of a single "hold-out" coating layer including a colloidal copolymer applied by the paper machine on the press-applied barrier side of a paperboard substrate. Such structures of this type, generally, allow paper machine with only one coater on the barrier side to apply a sufficient coating for the desired hold-out.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: March 16, 1999
    Assignee: Westvaco Corp.
    Inventor: Robinson Camden Perkins Claytor
  • Method for producing a self-locking, paperboard pail-like container and product thereof
    Patent number: 5873220
    Abstract: This invention relates to paperboard containers. Such structures of this type, generally, allow for the container to be formed into a self-locking, pail-like container for holding food stuffs.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: February 23, 1999
    Assignee: Westvaco Corporation
    Inventors: Rune Karl Haraldsson, Kenneth James Reeves, Arthur Winfield Twitchell
  • Carton opening feature
    Patent number: 5868307
    Abstract: This invention relates to carton opening features. Such structures of this type, generally, utilize a straight line sealing method and a lid having a specified corner radius, wherein the carton can be easily opened at the specified corner.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: February 9, 1999
    Assignee: Westvaco Corporation
    Inventor: Barry Gene Calvert
  • Debarking wood without introducing contaminants into the wood
    Patent number: 5868186
    Abstract: This invention relates to a wood chip recovery system which removes bark from roundwood or wood chips. It is desirable for such structures of this type to recover the wood chips from the bark without introducing contaminants, such as metal ions like iron, into the debarked roundwood or wood chips.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: February 9, 1999
    Assignee: Westvaco Corporation
    Inventors: David Dwight Mulligan, John Rolfe Hite Martin