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 heptane from 1-heptene by extractive distillation
    Patent number: 5443697
    Abstract: Heptane is difficult to separate from 1-heptene by conventional distillation or rectification because of the proximity of their boiling points. Heptane can be readily separated from 1-heptene by extractive distillation. Effective agents are diacetone alcohol, ethyl butyrate and dimethylsulfoxide.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: August 22, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of xylenes by extractive distillation
    Patent number: 5441608
    Abstract: p-Xylene cannot be separated from m-xylene by distillation or rectification because of the proximity of their boiling points. p-Xylene can be separated from m-xylene by means of extractive distillation. Effective agents are 3-ethylphenol and 1,1,2-trichloroethane. Effective agents for separating mixtures of p-xylene, m-xylene and o-xylene are 2-butoxyethyl acetate and 1,1,1-trichloroethane.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: August 15, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 3-methyl-2-butanol from 2-pentanol by azeotropic
    Patent number: 5439561
    Abstract: 3-Methyl-2-butanol is difficult to separate from 2-pentanol by conventional distillation or rectification because of the proximity of their boiling points. 3-Methyl-2-butanol can be readily separated from 2-pentanol by azeotropic distillation. Effective agents are 2,2-dimethyl butane, ethyl acetate and dioxane.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: August 8, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of ethanol from isopropanol by azeotropic distillation
    Patent number: 5437770
    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 sec. butyl acetate, hexene-1 and 1,3-dioxolane.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: August 1, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of propylene glycol from ethylene glycol by azeotropic distillation
    Patent number: 5425853
    Abstract: Propylene glycol is difficult to separate from ethylene glycol by conventional distillation or rectification because of the proximity of their boiling points. Propylene glycol can be readily separated from ethlene glycol by azeotropic distillation. Effective agens are m-diisopropyl benzene, 1-octene, 3-carene and myrcene.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: June 20, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of methylene chloride from tetrahydrofuran by extractive distillation
    Patent number: 5425854
    Abstract: Methylene chloride is difficult to separate from tetrahydrofuran by conventional distillation or rectification because of the proximity of their vapor pressures. Methylene chloride can be readily separated from tetrahydrofuran by extractive distillation. Effective agents are 1-pentanol, 1,2-butanediol and 3-nitrotoluene.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: June 20, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of ethyl benzene from p-xylene by extractive distillation
    Patent number: 5425855
    Abstract: Ethyl benzene is difficult to separate from p-xylene by conventional distillation or rectification because of the closeness of their boiling points. Ethyl benzene can be readily separated from p-xylene by extractive distillation. An effective agent is 5-methyl-2-hexanone, also called methyl isoamyl ketone.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: June 20, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of propylene glycol from 1,2-butanediol by azeotropic
    Patent number: 5423955
    Abstract: Propylene glycol is difficult to separate from 1,2-butanediol by conventional distillation or rectification because of the proximity of their boling points. Propylene glycol can be readily separated from 1,2-butanediol by azeotropic distillation. Effective agents are 2,2-dimethyl butane, 3-carene and diethyl benzene.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: June 13, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 2-butanone from isopropanol by azeotropic distillation
    Patent number: 5423954
    Abstract: 2-Butanone is difficult to separate from isopropanol by conventional distillation or rectification because of the proximity of their boiling points. 2-Butanone can be readily separated from isopropanol by azeotropic distillation. Effective agents are 3-methyl pentane, methyl t-amyl ether and acetonitrile.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: June 13, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of glycerine from bis(hydroxymethyl)tetrahydrofuran by azeotropic distillation
    Patent number: 5421965
    Abstract: Glycerine is difficult to separate from bis(hydroxymethyl)tetrahydrofuran by conventional distillation or rectification because of the proximity of their boiling points. Glycerine can be readily separated from bis(hydroxymethyl)tetrahydrofuran by azeotropic distillation. Effective agents are m-xylene, beta-pinene and dicyclopentadiene.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: June 6, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of ethyl benzene from xylenes by azeotropic distillation
    Patent number: 5417812
    Abstract: Ethyl benzene is difficult to separate from xylenes by conventional distillation or rectification because of the proximity of their boiling points. Ethyl benzene can be readily separated from xylenes by azeotropic distillation. Effective agents for separating ethyl benzene from p-xylene are methyl formate, n-butanol and cyclopentanol; from p-xylene and m-xylene, n-butanol.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: May 23, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 1-butanol from 2-pentanol by azeotropic distillation
    Patent number: 5417813
    Abstract: 1-Butanol is difficult to semarate 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 azeotropic distillation. Effective agents are 1-octene, hexane and methyl cyclohexane.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: May 23, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 3-methyl-2-butanol from 2-pentanol by extractive distillation
    Patent number: 5417814
    Abstract: 3-Methyl-2-butanol is difficult to separate from 2-pentanol by conventional distillation or rectification because of the proximity of their boiling points. 3-Methyl-2-butanol can be readily separated from 2-pentanol by extractive distillation. Effective agents are acetamide or 2,2,2-trichloroethanol.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: May 23, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of ethanol from isopropanol by azeotropic distillation
    Patent number: 5415741
    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 acetonitrile and methylene chloride.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: May 16, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 3-methyl-2-butanol from 1-butanol by azeotropic distillation
    Patent number: 5407542
    Abstract: 3-Methyl-2-butanol is difficult to separate from 1-butanol by conventional distillation or rectification because of the proximity of their boiling points. 3-Methyl-2-butanol can be readily separated from 1-butanol by azeotropic distillation. Effective agents are methyl acetoacetate and dioxane.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: April 18, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 3-methyl-2-butanol from 1-butanol by extractive distillation
    Patent number: 5407540
    Abstract: 3-Methyl-2-butanol is difficult to separate from 1-butanol by conventional distillation or rectification because of the proximity of their boiling points. 3-Methyl-2-butanol can be readily separated from 1-butanol by extractive distillation. Effective agents are ethyl n-valerate, dimethylacetamide and dimethylsulfoxide.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: April 18, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 3-methyl-2-butanol from 2-pentanol by azeotropic distillation
    Patent number: 5407541
    Abstract: 3-Methyl-2-butanol is difficult to separate from 2-pentanol by conventional distillation or rectification because of the proximity of their boiling points. 3-Methyl-2-butanol can be readily separated from 2-pentanol by azeotropic distillation. Effective agents are pentane, 2,2-dimethyl butane and dioxane.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: April 18, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of benzene from close boiling hydrocarbons by azeotropic distillation
    Patent number: 5405505
    Abstract: Benzene is difficult to separate from cyclohexane or cyclohexene by conventional distillation or rectification because of the close proximity of their boiling points. Benzene can be readily separated from cyclohexane or cyclohexene by using azeotropic distillation. Effective agents are: for benzene from cyclohexane, dimethoxymethane; for benzene from cyclohexene, methanol.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: April 11, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg
  • Separation of 1-decene from 2-octanone by azeotropic distillation
    Patent number: 5405504
    Abstract: 1-Decene is impossible to separate from 2-octanone by conventional distillation or rectification because the two compounds form a minimum boiling azeotrope. 1-Decene can be readily separated from 2-octanone by azeotropic distillation. Effective agents are 1-propanol, 2-ethoxyethanol, and methanol.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: April 11, 1995
    Assignee: Lloyd Berg
    Inventors: Lloyd Berg, Randy W. Wytcherley
  • Separation of 1-decene from 2-octanone by azeotropic distillation
    Patent number: 5403448
    Abstract: 1-Decene is difficult to separate from 2-octanone by conventional distillation or rectification because of the proximity of their boiling points. 1-Decene can be readily separated from 2-octanone by azeotropic distillation. Effective agents are butyl propionate and 1-propanol.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: April 4, 1995
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg