Patents Represented by Attorney, Agent or Law Firm Daniel B. Reece, IV
  • Low pressure methane storage with highly microporous carbons
    Patent number: 5626637
    Abstract: A process is disclosed for storing gaseous hydrocarbon fuel in storage containers under relatively low pressure by including in the cylinders highly microporous carbons prepared by further chemical activation of activated carbon comprising activation an active carbon precursor material with an alkali solution, predrying the blend to below about 25% moisture content, heat treating this blend at from about 652.degree. to about 1100.degree. C., and acid washing and drying the microporous activated carbon product, which is characterized by greater than 50% of its total pore volume comprising pores of from above 8 .ANG. to 20 .ANG. in width and greater than 70% of its total pore volume comprising pores of less than 20 .ANG. in width and greater than 95% of its total pore volume comprising pores of less than 50 .ANG. in width.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: May 6, 1997
    Assignee: Westvaco Corporation
    Inventor: Frederick S. Baker
  • Method for production of coniferous isogenic cell lines
    Patent number: 5610051
    Abstract: This invention relates to the production of genetically homogeneous cell lines from coniferous plants. In particular, this invention describes a method for producing isogenic cell lines of embryogenic cultures derived from immature conifer seeds. This method is suited for producing clonal planting stock useful for reforestation.
    Type: Grant
    Filed: June 18, 1991
    Date of Patent: March 11, 1997
    Assignee: Westvaco Corporation
    Inventors: Michael R. Becwar, Thomas D. Blush
  • Slow-setting bituminous emulsions
    Patent number: 5596032
    Abstract: This invention relates to the manufacture and application of uniquely suitable emulsifiers for anionic bituminous emulsions. In particular, this invention relates to emulsifiers for slow-setting aqueous emulsions suitable for use in applications where a high degree of chemical, mechanical, and rheological stability is required (such as in slurry seal applications and thixotropic industrial emulsion applications). In such applications, fine aggregate, clay, or polymer latex is mixed with the emulsion to obtain a homogenous storage-stable composite which can be applied for coatings, floorings, roofings, and as a roadway sealant.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: January 21, 1997
    Assignee: Westvaco Corporation
    Inventors: Peter Schilling, Fredricke S. Starr
  • Polyamine condensates of styrene-acrylic acid rosin copolymers as corrosion inhibitors
    Patent number: 5563198
    Abstract: Corrosion inhibiting compositions for metals subjected to highly acidic environments may be produced by reacting in a condensation reaction a styrene-acrylic acid copolymer with a polyamine (or combination of polyamines) to produce a polyamidoamine inhibitor. A preferred inhibitor product may be produced by replacing up to 80% of the styrene-acrylic acid copolymer with a member selected from the group consisting of: rosin, C.sub.23 -C.sub.24 modified rosins, C.sub.8 -C.sub.20 fatty acids, C.sub.9 -C.sub.22 modified fatty acids, and combinations thereof. These inhibitors exhibit excellent film forming and film persistency characteristics.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: October 8, 1996
    Assignee: Westvaco Corporation
    Inventor: Peter Schilling
  • Tall oil deodorization process
    Patent number: 5543110
    Abstract: A process for deodorizing tall oil rosin and tall oil fatty acids and their derivatives by treating same with an ammonium hydroxide solution under conditions of a steam sparge.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: August 6, 1996
    Assignee: Westvaco Corporation
    Inventors: Fredricke S. Starr, Joseph M. Wong, Norman L. Kennedy
  • Preparation of high activity, high density activated carbon with activatable binder
    Patent number: 5538932
    Abstract: An improved method of manufacturing hard activated carbon pellets is disclosed in which a lignocellulose material is chemically activated to form a char and heated to a temperature above about 360.degree. C. which char is ground and then agglomerated in a pin mixer followed by pelleting the agglomerated acid char in the presence of an activatable binder. The pelleted hard activated carbon is then subjected to a final heat activation to yield a product with high density and activity.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: July 23, 1996
    Assignee: Westvaco Corporation
    Inventors: Zhiquan Q. Yan, John C. McCue, Edward D. Tolles
  • Phosphorus-treated activated carbon composition
    Patent number: 5538929
    Abstract: Disclosed is a phosphorus treated activated carbon composition suitable for use as catalyst support, catalyst, and an adsorbent, which is produced by treating (e.g., by mixing or impregnating) an activated carbon material having a surface area greater than 100 m.sup.2 /g with a phosphorus-containing compound, drying, and heating to a temperature of from 450.degree. C. to about 1200.degree. C., wherein the resulting composition is characterized by a phosphorus compound combined with the carbon in the amount of from above 2.5% to about 10% phosphorus, based on the weight of the composition.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: July 23, 1996
    Assignees: Westvaco Corporation, Texaco, Inc.
    Inventors: Chakka Sudhakar, Robert K. Beckler, James R. Miller, Mahendra S. Patel
  • Basal nutrient medium for in vitro cultures of loblolly pines
    Patent number: 5534433
    Abstract: A basal nutrient culture medium for the in vitro culture of Pinus taeda, loblolly pine, is disclosed. The medium contains nitrate, ammonium, potassium, phosphorate, calcium, magnesium, sulfate, chlorine, sodium, borate, manganese, iron, zinc, copper, iodine, molybdenum oxide, cobalt, thiamine and EDTA.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 9, 1996
    Assignee: Westvaco Corporation
    Inventor: Jay E. Coke
  • Basal nutrient medium for in vitro cultures of loblolly pines
    Patent number: 5534434
    Abstract: A basal nutrient culture medium for the in vitro culture of Pinus taeda, loblolly pine, is disclosed. The medium contains nitrate, ammonium, potassium, phosphorate, calcium, magnesium, sulfate, chlorine, sodium, borate, manganese, iron, zinc, copper, iodine, molybdenum oxide, cobalt, thiamine and EDTA.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 9, 1996
    Assignee: Westvaco Corporation
    Inventor: Jay E. Coke
  • Magnetic deinking of waste papers
    Patent number: 5527426
    Abstract: An improved process is disclosed for deinking waste paper which contains laser, electrostatic, and other non-impact printing toners/inks to produce high quality (high brightness, little to no dirt content) pulp with little or no fiber loss. The process involves attachment of ink particles in the waste paper pulp to a magnetic carrier material with the help of an agglomeration agent followed by removal of the attached ink particles by magnetic separation. The magnetic treatment preferably is conducted at ambient or greater temperature, at neutral to alkaline pH, and at a low pulp consistency. Agglomeration and magnetite addition, followed by exposure of the repulped waste paper to a magnetic field provides near complete ink removal over exposure to the magnetic field without such pretreatment.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: June 18, 1996
    Assignee: Westvaco Corporation
    Inventors: Nipun Marwah, Allen A. Gold
  • Polyamine condensates of styrene-acrylic acid copolymers as corrosion inhibitors
    Patent number: 5516826
    Abstract: Corrosion inhibiting compositions for metals subjected to highly acidic environments may be produced by reacting in a condensation reaction a styrene-acrylic acid copolymer with a polyamine (or combination of polyamines) to produce a polyamidoamine inhibitor. A preferred inhibitor product may be produced by replacing up to 80% of the styrene-acrylic acid copolymer with a member selected from the group consisting of: rosin, C.sub.23 -C.sub.24 modified rosins, C.sub.8 -C.sub.20 fatty acids, C.sub.9-C.sub.22 modified fatty acids, and combinations thereof. These inhibitors exhibit excellent film forming and film persistency characteristics.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: May 14, 1996
    Assignee: Westvaco Corporation
    Inventor: Peter Schilling
  • Method for regeneration of coniferous plants by somatic embryogenesis
    Patent number: 5506136
    Abstract: This invention relates to a method for regeneration of coniferous plants. In particular, this invention relates to the development of a multi-step method that is able to complete the entire somatic embryogenesis regenerative process, from explant collection to planting, for plants of the genus Pinus and Pinus hybrid plants. This method is well suited for producing clonal planting stock useful for reforestation.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: April 9, 1996
    Assignee: Westvaco Corporation
    Inventors: Michael R. Becwar, Emily E. Chesick, Levis W. Handley, III, Mark R. Rutter
  • Paper coating composition
    Patent number: 5500191
    Abstract: Paper coating formulations comprising sulfated oleic acid as a lubricant additive thereto are disclosed and are characterized by improved healing properties which permit coating at higher solids levels over formulations containing prior art lubricants when applied to the paper with a blade coater.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: March 19, 1996
    Assignee: Westvaco Corporation
    Inventor: Michael L. DeMatte
  • Binder for chemical-resistant inks
    Patent number: 5498661
    Abstract: The invention relates to ink binders. In particular, the invention relates to acrylic latex binders for use in preparing zinc-containing water-based inks for printing on plastic films. Inks containing these binders exhibit increased chemical resistance to commonly-used cleaning formulations and excellent heat resistance and water-crinkle resistance properties.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: March 12, 1996
    Assignee: Westvaco Corporation
    Inventor: G. Frederick Hutter
  • Rosin carboxypyrrolidinone adducts
    Patent number: 5498653
    Abstract: This invention relates to rosin carboxypyrrolidinone adducts. In particular, this invention relates to water-soluble resins derived from the reaction product of a modified rosin with a hydroxyl-containing carboxypyrrolidinone derivative. These resins can be used to make acrylic latex compositions which can, in turn, be utilized to produce water-based flexographic and gravure ink formulations.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: March 12, 1996
    Assignee: Westvaco Corporation
    Inventor: G. Frederick Hutter
  • Rosin carboxypyrrolidinone adducts
    Patent number: 5491215
    Abstract: This invention relates to rosin carboxypyrrolidinone adducts. In particular, this invention relates to water-soluble resins derived from the reaction product of a modified rosin with a hydroxyl-containing carboxypyrrolidinone derivative. These resins can be used to make acrylic latex compositions which can, in turn, be utilized to produce water-based flexographic and gravure ink formulations.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: February 13, 1996
    Assignee: Westvaco Corporation
    Inventor: G. Frederick Hutter
  • Embryogenic coniferous liquid suspension cultures
    Patent number: 5491090
    Abstract: This invention relates to a method for regeneration of coniferous plants. In particular, this invention relates to an improved method for establishing and maintaining embryogenic liquid suspension cultures for use in somatic embryogenesis processes from plants of the genus Pinus and Pinus interspecies hybrids. This method is well suited for producing clonal planting stock useful for reforestation.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: February 13, 1996
    Assignee: Westvaco Corporation
    Inventors: Levis W. Handley, III, Alice P. Godbey
  • Polyvinyl alcohol-modified rosin-based emulsion polymers
    Patent number: 5473006
    Abstract: The invention relates to polyvinyl alcohol-modified, rosin-based, resin-fortified emulsion polymer compositions having improved properties which are useful in formulating gravure and flexographic printing inks. Additionally, the invention relates to the method of preparing these emulsion polymer compositions.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: December 5, 1995
    Assignee: Westvaco Corporation
    Inventors: G. Frederick Hutter, Paul J. Zuraw
  • Postforming decorative laminates
    Patent number: 5443902
    Abstract: Improvements in the construction of postformable laminates are disclosed by the provision of a single high basis weight, high coarseness, high kappa number sheet formed predominantly of softwood pulp, preferably southern loblolly pine, which pulp has been treated in a mechanical device that effectively imparts kinking and curling to the individual pulp fibers. The sheet is intended as a replacement for the highly extensible sheet(s) currently located on the back of the laminate farthest away from the core.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: August 22, 1995
    Assignee: Westvaco Corporation
    Inventors: David E. Knox, J. Donato Fortin, Harold L. Hintz
  • Cationic aqueous bituminous emulsion-aggregate slurries
    Patent number: 5443632
    Abstract: The present invention relates to mixing-grade, quick-setting, and slow-setting cationic aqueous bituminous emulsion-aggregate paving slurry seal mixtures. More particularly, this invention relates to paving slurry seal mixtures formed with cationic emulsions prepared by emulsifying bitumen (e.g. asphalt) in water with a cation-active emulsifier. The emulsifier is the product of the reaction of polyamines with certain fatty acids and rosins, and a quaternizing agent such as 2,3-epoxy-propyl-trimethyl ammonium chloride or 3-chloro-2-hydroxy propyl-trimethyl ammonium chloride.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: August 22, 1995
    Assignee: Westvaco Corporation
    Inventor: Peter Schilling