Patents Assigned to Lloyd Berg
  • Separation of 1-octene from octane by azeotropic distillation
    Patent number: 5382330
    Abstract: 1-Octene is difficult to separate from octane by conventional distillation or rectification because of the proximity of their boiling points. 1-Octene can be readily separated from octane by azeotropic distillation. Effective agents are ethyl formate, ethyl acetate and t-amyl methyl ether.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: January 17, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of alpha-phellandrene from 3-carene by azeotropic distillation
    Patent number: 5380405
    Abstract: alpha-Phellandrene is difficult to separate from 3-carene by conventional distillation or rectification because of the proximity of their boiling points. alpha-phellandrene can be readily separated from 3-carene by azeotropic distillation. Effective agents are methyl formate, nitroethane and acetal.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: January 10, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 2-butanol from t-amyl alcohol by extractive distillation
    Patent number: 5360520
    Abstract: 2-Butanol is difficult to separate from t-amyl alcohol by conventional distillation or rectification because of the proximity of their boiling points. 2-Butanol can be readily separated from t-amyl alcohol by extractive distillation. Effective agents are methyl caproate, adiponitrile and cyclopentanone.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: November 1, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 1-propanol from 2-butanol by extractive distillation
    Patent number: 5358608
    Abstract: 1-Propanol is difficult to separate from 2-butanol by conventional distillation or rectification because of the proximity of their boiling points. 1-Propanol can be readily separated from 2-butanol by extractive distillation. Effective agents are isobutyl acetate, isobornyl methyl acetate and ethyl butyrate.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: October 25, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of ethanol from isopropanol by extractive distillation
    Patent number: 5348625
    Abstract: Ethanol is difficult to separate from isopropanol by conventional distillation or rectification because of the proximity of their boiling points. Ethanol can be readily separated from isopropanol by extractive distillation. Effective agents are methyl caproate, cyclopentane and isobutyl acetate.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: September 20, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of ethanol from isopropanol by azeotropic distillation
    Patent number: 5338411
    Abstract: Ethanol is difficult to separate from isopropanol by conventional distillation or rectification because of the proximity of their boiling points. Ethanol can be readily separated from isopropanol by azeotropic distillation. Effective agents are methyl ethyl ketone, cyclopentane and 2-pyrrolidinone.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: August 16, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 2-butanol from t-amyl alcohol by azeotropic distillation
    Patent number: 5338410
    Abstract: 2-Butanol is difficult to separate from t-amyl alcohol by conventional distillation or rectification because of the proximity of their boiling points. 2-Butanol can be readily separated from t-amyl alcohol by azeotropic distillation. Effective agents are ethyl acetoacetate, nitroethane and 3-pentanone.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: August 16, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Solution of certain five and six carbon atom carbohydrates
    Patent number: 5334253
    Abstract: A method for dissolving sorbitol, xylitol, mannitol, glucose and gluconic acid. Effective agents are dimethylsulfoxide, dimethylformamide or dimethylacetamide.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: August 2, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 1-propanol from 2-butanol by azeotropic distillation
    Patent number: 5332478
    Abstract: 1-Propanol is difficult to separate from 2-butanol by conventional distillation or rectification because of the proximity of their boiling points. 1-Propanol can be readily separated from 2-butanol by azeotropic distillation. Effective agents are t-butyl methyl ether, 1,4-dioxane and ethyl formate.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: July 26, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 1-pentanol from cyclopentanol by extractive distillation
    Patent number: 5320715
    Abstract: 1-Pentanol is difficult to separate from cyclopentanol by conventional distillation or rectification because of the closeness of their boiling points. 1-Pentanol can be readily separated from cyclopentanol by extractive distillation. Effective agents are ethylene glycol and sulfolane.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: June 14, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of methylene chloride from n-pentane by extractive distillation
    Patent number: 5304700
    Abstract: Methylene chloride cannot be completely separated from n-pentane by conventional distillation or rectification because of the minimum boiling azeotrope. Methylene chloride can be readily separated from n-pentane by extractive distillation. Typical effective agents are 2-pentanone, isopropyl acetate or methanol.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: April 19, 1994
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Zuyin Yang
  • Separation of n-heptane from vinyl acetate by extractive distillation
    Patent number: 5277766
    Abstract: Heptane cannot be removed from heptane-vinyl acetate mixtures by distillation because of the minimum boiling azeotrope. Heptane can be readily removed from vinyl acetate by extractive distillation. Typical effective agents are dimethylsulfoxide, phenol, diisobutyl ketone and hexyl acetate.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: January 11, 1994
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of formic acid from acetic acid by azeotropic distillation
    Patent number: 5264086
    Abstract: Formic acid difficult to separate from acetic acid by conventional distillation or rectification because of the close proximity of their boiling points. Formic acid can be readily separated from acetic acid by using azeotropic distillation. Effective agents are cyclopentane and tetrachloroethylene.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: November 23, 1993
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Randi W. Wytcherley
  • Separation of octene-1 from its isomers by azeotropic and extractive distillation
    Patent number: 5262015
    Abstract: Octene-1 is difficult to separate from several of its isomers by conventional distillation or rectification because of the closeness of their boiling points. Octene-1 can be readily separated from its close boiling isomers by azeotropic or extractive distillation. Effective agents are: for azeotropic distillation, t-amyl methyl ether; for extractive distillation, isophorone.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: November 16, 1993
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Randi W. Wytcherley
  • Separation of heptane from vinyl acetate by azeotropic distillation
    Patent number: 5258102
    Abstract: Heptane cannot be separated from vinyl acetate by conventional distillation or rectification because of the minimum boiling azeotrope. Heptane can be readily separated from vinyl acetate by using azeotropic distillation. Typical examples of effective agents are methyl acetate, ethanol, ethyl formate or t-amyl methyl ether.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: November 2, 1993
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of hexane from vinyl acetate by azeotropic distillation
    Patent number: 5256259
    Abstract: Hexane cannot be separated from vinyl acetate by conventional distillation or rectification because of the minimum boiling azeotrope. Hexane can be readily separated from vinyl acetate by using azeotropic distillation. Typical examples of effective agents are acetone, acetonitrile or methyl t-butyl ether.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: October 26, 1993
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Randi W. Wytcherley
  • Separation of toluene from methyl isobutyl ketone by azeotropic distillation
    Patent number: 5250157
    Abstract: Toluene cannot be separated from methyl isobutyl ketone by conventional distillation or rectification because of the minimum boiling azeotrope. Toluene can be readily separated from methyl isobutyl ketone by using azeotropic distillation. Typical examples of effective agents are 1-butanol, 2-methoxyethanol and n-heptane.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: October 5, 1993
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Randi W. Wytcherley
  • Removal of sulfur from coal and pitch with dolomite
    Patent number: 5246470
    Abstract: The sulfur in bituminous coal can be converted to calcium sulfate instead of sulfur dioxide during combustion when it is mixed with petroleum pitch and calcium oxide, calcium carbonate or dolomite.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: September 21, 1993
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, John W. Berg, John C. Orth
  • Separation of vinyl acetate from methyl acrylate by extractive distillation
    Patent number: 5240567
    Abstract: The separation of vinyl acetate from methyl acrylate by distillation is difficult because of the closeness of their boiling points. Vinyl acetate can be readily removed from methyl acrylate by extractive distillation. Typical effective agents are phenol, methoxyethanol and isobutyl vinyl ether.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: August 31, 1993
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Randi W. Wytcherley
  • Separation of hexane from vinyl acetate and methyl acrylate by extractive distillation
    Patent number: 5236559
    Abstract: Hexane cannot be removed from hexane--vinyl acetate--methyl acrylate mixtures because of the ternary azeotrope. Hexane can be readily removed from hexane--vinyl acetate--methyl acrylate mixtures by extractive distillation. Typical effective agents are phenol, diethylene glycol methyl ether and 2-nitropropane.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: August 17, 1993
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Randi W. Wytcherley