Patents by Inventor Lloyd Berg

Lloyd Berg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Separation of 1-butanol from 2-pentanol by extractive distillation
    Patent number: 5401366
    Abstract: 1-Butanol is difficult to separate from 2-pentanol by conventional distillation or rectification because of the proximity of their boiling points. 1-Butanol can be readily separated from 2-pentanol by extractive distillation. Effective agents are ethyl benzene, d-limonene and terpinolene.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: March 28, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Process to recover benzene from mixed hydrocarbons by extractive distillation
    Patent number: 5399244
    Abstract: Benzene and other aromatics are separated from a stream of mixed hydrocarbons containing both aromatics and non-aromatics by extractive distillation with a solvent system containing dimethyl sulfoxide and optionally a co-solvent, preferably water, followed by distillation stripping of the aromatics from the enriched solvent system, and recycle of the lean solvent system to the extractive distillation step.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: March 21, 1995
    Assignee: Glitsch, Inc.
    Inventors: Joseph C. Gentry, Lloyd Berg, John C. McIntyre, Randa W. Wytcherley
  • Separation of ethyl benzene from o-xylene by extractive distillation
    Patent number: 5397441
    Abstract: Ethyl benzene is difficult to separate from o-xylene by conventional distillation or rectification because of the closeness of their boiling points. Ethyl benzene can be readily separated from o-xylene by extractive distillation. Effective agents are phenol, cresols, nitrotoluenes and cyclododecanol.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: March 14, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of hexane from vinyl acetate and methyl acrylate by extractive distillation
    Patent number: 5393385
    Abstract: Hexane is difficult to separate from vinyl acetate and/or methyl acrylate by conventional distillation or rectification because of the closeness of their boiling points. Hexane can be readily separated from vinyl acetate and/or methyl acrylate by extractive distillation. Effective agents are dimethylsulfoxide and dimethylformamide.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: February 28, 1995
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Randi W. Wytcherley
  • Separation of alpha-Phellandrene from d-limonene by azeotropic distillation
    Patent number: 5391264
    Abstract: alpha-Phellandrene is difficult to separate from d-limonene by conventional distillation or rectification because of the proximity of their boiling points. alpha-Phellandrene can be readily separated from d-limonene by azeotropic distillation. Effective agents are n-butyl acetate and sulfolane.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: February 21, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 1-hexene from hexane by azeotropic distillation
    Patent number: 5385649
    Abstract: 1-Hexene is difficult to separate from hexane by conventional distillation or rectification because of the proximity of their boiling points. 1-Hexene can be readily separated from hexane by azeotropic distillation. Effective agents are 2-ethyl-1-butanol and diacetone alcohol.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: January 31, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 1-decene from decane by azeotropic distillation
    Patent number: 5382329
    Abstract: 1-Decene is difficult to separate from decane by conventional distillation or rectification because of the proximity of their boiling points. 1-Decene can be readily separated from decane by azeotropic distillation. Effective agents are methyl propionate, ethyl butyrate and methyl t-butyl ether.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: January 17, 1995
    Assignee: Lloyd Berg
    Inventor: 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 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
  • 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
  • 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