Patents Represented by Attorney Peter P. Chevis

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  • Preparation of a lignocellulosic composite
    Patent number: 4186242
    Abstract: A process for the preparation of lignocellulosic composite using urea-formaldehyde adhesive is described characterized by treating the lignocellulosic constituents with ammonium-base lignosulfonate prior to pressing to decrease the emission of formaldehyde.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: January 29, 1980
    Assignee: Georgia-Pacific Corporation
    Inventor: Howard W. Holmquist
  • Pulp washer
    Patent number: 4154644
    Abstract: A horizontal, Fourdrinier foraminous belt type, countercurrent, high-capacity, cellulose pulp washer is described. The described washer is equipped with a hood positioned over a portion of the belt and over vacuum boxes or receptacles under the upper loop of the belt. The gases and vapors drawn into the vacuum boxes or receptacles with the wash liquid are separated from the liquid in the receptacles and recycled to the hood to control the atmosphere in the hood and maintain the desired pressure differential for operation of the washer.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: May 15, 1979
    Assignee: Georgia-Pacific Corporation
    Inventor: Eric O. Ericsson
  • Clarification process
    Patent number: 4110208
    Abstract: A process is described for clarification of an aqueous liquid by imparting magnetic characteristics to flocculated particles by addition of a ferromagnetic organic composition to the liquid to associate the ferromagnetic composition with the flocculated particles.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: August 29, 1978
    Assignee: Georgia-Pacific Corporation
    Inventor: John A. Neal
  • Separation of an aqueous or water-miscible liquid from a fluid mixture
    Patent number: 4108767
    Abstract: A process for the separation of a dispersed aqueous or water-miscible liquid from a fluid mixture by addition of a water-soluble, organically-based, ferromagnetic composition to combine with the dispersed liquid and subjecting the fluid mixture to a magnetic field to separate the aqueous or water-miscible liquid.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: August 22, 1978
    Assignee: Georgia-Pacific Corporation
    Inventor: William D. Cooper
  • Clarification process
    Patent number: 4089779
    Abstract: A process is described for clarification of an aqueous liquid by imparting magnetic characteristics to flocculated particles by addition of a ferromagnetic organic composition to the liquid to associate the ferromagnetic composition with the flocculated particles.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: May 16, 1978
    Assignee: Georgia-Pacific Corporation
    Inventor: John A. Neal
  • Lignin dispersant
    Patent number: 4045421
    Abstract: A process for the preparation and recovery of an effective dispersant from vanillin raffinate by reaction with formaldehyde is described.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: August 30, 1977
    Assignee: Georgia-Pacific Corporation
    Inventors: Donald E. Wenzel, Vincent F. Felicetta
  • Process for the preparation of aqueous magnetic material suspensions
    Patent number: 4019994
    Abstract: A process for the preparation of aqueous magnetic oxide suspensions is described.
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: April 26, 1977
    Assignee: Georgia-Pacific Corporation
    Inventor: Jack R. Kelley
  • Lignosulfonate composition and process for its preparation
    Patent number: 4019995
    Abstract: Lignosulfonate and sulfonated tannin compositions having magnetic properties which may be water soluble and a process for their preparation are described.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: April 26, 1977
    Assignee: Georgia-Pacific Corporation
    Inventors: William Scott Briggs, Niels J. Kjargaard
  • Aryl sulfonate-aldehyde composition and process for its preparation
    Patent number: 4018691
    Abstract: A process for the preparation of aryl sulfonate-aldehyde condensate compositions having magnetic properties which may be water-soluble and compositions thereof are described.
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: April 19, 1977
    Assignee: Georgia-Pacific Corporation
    Inventor: John A. Neal
  • Cationic bituminous emulsions
    Patent number: 4017419
    Abstract: A cationic bitumen emulsion stabilized with a polyamine-lignin reaction product is described.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: April 12, 1977
    Assignee: Georgia-Pacific Corporation
    Inventors: Charles H. Ludwig, Larry B. Fiske
  • Lignin composition and a process for its preparation
    Patent number: 4017475
    Abstract: Aminoalkylated hydroxyphenylated lignosulfonate is described. The composition is prepared by reacting a hydroxyphenylated lignosulfonate with a nitrogen compound and an aldehyde.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: April 12, 1977
    Assignee: Georgia-Pacific Corporation
    Inventor: Charles H. Ludwig
  • Coating composition
    Patent number: 4017430
    Abstract: Coating compositions prepared from phenolated lignosulfonates and polyunsaturated carboxylic acids are described.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: April 12, 1977
    Assignee: Georgia-Pacific Corporation
    Inventor: William Scott Briggs
  • Process for recovery of dissolved mercury salts from aqueous solutions
    Patent number: 3989623
    Abstract: A process for recovery of dissolved mercury salts from aqueous solution is described which involves precipitating the mercury as mercury sulfide and contacting the solution with zinc sulfide particles.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: November 2, 1976
    Assignee: Georgia-Pacific Corporation
    Inventor: John A. Neal
  • Drilling fluid composition
    Patent number: 3985659
    Abstract: An aqueous drilling fluid comprising bentonite, or subbentonite and a water-soluble copolymer of lignosulfonate and a polyacrylate in a sufficient amount to increase the yield of the clay.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: October 12, 1976
    Assignee: Georgia-Pacific Corporation
    Inventors: Vincent F. Felicetta, Donald E. Wenzel
  • Paperboard laminating adhesive containing polyvinyl acetate/styrenebutadine polymers; paraffin wax; clay; and polyalkyleneglycol
    Patent number: 3985937
    Abstract: A polymeric latex emulsion adhesive for lamination of paperboard is described.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: October 12, 1976
    Assignee: Georgia-Pacific Corporation
    Inventor: Rodger L. Fife
  • Preparation of a wax containing paper sheet
    Patent number: 3982993
    Abstract: A process for treatment of a cellulosic paper sheet in which the cellulosic fibers are treated with a polyamine or polyamide and a mixture of wax emulsion, urea-formaldehyde and an aldehyde donor such as a tris nitromethane or an oxazolidine.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: September 28, 1976
    Assignee: Georgia-Pacific Corporation
    Inventor: Rodger L. Fife
  • Plywood adhesive and use thereof
    Patent number: 3957703
    Abstract: A phenolic-aldehyde plywood adhesive containing as an extender a water-insoluble, acid-polymerized lignosulfonate.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: May 18, 1976
    Assignee: Georgia-Pacific Corporation
    Inventors: Charles H. Ludwig, Albert W. Stout, deceased
  • Phenolic adhesives
    Patent number: 3956207
    Abstract: A ready-to-use phenolic adhesive for the manufacture of plywood containing heat treated spent sulfite liquor solids is described. The spent sulfite liquor solids are heat treated in a dry form until from 20% to 50% of the dry heated solids are insoluble in an aqueous 0.5 molar sodium carbonate solution.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: May 11, 1976
    Assignee: Georgia-Pacific Corporation
    Inventors: Kenneth A. E. Blackmore, Albert W. Stout, deceased
  • Separation of mannitol from galactitol
    Patent number: 3944625
    Abstract: A process for the separation of mannitol from galactitol is disclosed which comprises selectively crystallizing mannitol from an alkanol-water solution of the mixture to which a small amount of a soluble salt of an iron, nickel, or cobalt has been added.
    Type: Grant
    Filed: April 17, 1975
    Date of Patent: March 16, 1976
    Assignee: Georgia-Pacific Corporation
    Inventor: John A. Neal
  • Clarification process
    Patent number: 3935101
    Abstract: A clarification process using a water-soluble lignin-di-epoxide composition as a flocculating agent is described. The lignin-di-epoxide compositions are prepared by cross-linking of lignin with a di-epoxide.
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: January 27, 1976
    Assignee: Georgia-Pacific Corporation
    Inventor: William Scott Briggs