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 ethanol, isopropanol and water mixtures by extractive distillation
    Patent number: 5800681
    Abstract: Ethanol, isopropanol and water cannot be separated from each other by distillation or rectification because of minimum azeotropes. They are readily separated by extractive distillation. Effective agents are: dimethylsulfoxide for ethanol, phenol for isopropanol.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: September 1, 1998
    Inventor: Lloyd Berg
  • Separation of 2-butanol from isobutanol by extractive distillation
    Patent number: 5795447
    Abstract: 2-Butanol cannot be separated from isobutanol by distillation or rectification because of the closeness of their boiling points. 2-Butanol is readily separated from isobutanol by extractive distillation. Effective agents are propylene glycol propyl ether, 2-methoxyethanol and ethyl acetate.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: August 18, 1998
    Inventor: Lloyd Berg
  • Separating 3-methyl-1-butanol from 1-pentanol using certain organic compounds as the agent in extractive distillation
    Patent number: 5789629
    Abstract: 3-Methyl-1-butanol is difficult to separate from 1-pentanol by conventional distillation or rectification because of the proximity of their boiling points. 2 Methyl-1-butanol can be easily separated from 1-pentanol by extractive distillation. Effective agents are phenol, anisole and methyl salicylate.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: August 4, 1998
    Inventor: Lloyd Berg
  • Separation of 2-methyl-1-butanol and 3-methyl-1-butanol from 1-pentanol by azeotropic distillation
    Patent number: 5779862
    Abstract: 2-Methyl-1-butanol and 3-methyl-1-butanol are difficult to separate from 1-pentanol by conventional distillation or rectification because of the proximity of their boiling points. 2-Methyl-1-butanol and 3-methyl-1-butanol can be easily separated from 1-pentanol by azeotropic distillation. Effective agents are toluene, methyl acetate and tetrahydrofuran.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: July 14, 1998
    Inventor: Lloyd Berg
  • Separation of 4-methyl-2-pentanol from 3-methyl-1-butanol by azeotropic distillation
    Patent number: 5776322
    Abstract: 4-Methyl-2-pentanol cannot be separated from 3-methyl-1-butanol by distillation because of the closeness of their boiling points. 4-Methyl-2-pentanol can be easily separated from 3-methyl-1-butanol by azeotropic distillation. Effective agents are m-xylene and cumene.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: July 7, 1998
    Inventor: Lloyd Berg
  • Separation of t-amyl alcohol from 1-propanol by azeotropic distillation
    Patent number: 5776321
    Abstract: 1-Propanol cannot be separated from t-amyl alcohol by distillation or rectification because of the closeness of their boiling points. 1-Propanol is readily separated from t-amyl alcohol by azeotropic distillation. Effective agents are heptane, ethyl acetate and tetrahydrofuran.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: July 7, 1998
    Inventor: Lloyd Berg
  • Separation of 1-propanol from t-amyl alcohol by extractive distillation
    Patent number: 5772853
    Abstract: 1-Propanol and t-amyl alcohol cannot be separated by distillation or rectification because of the closeness of their boiling points. 1-Propanol is readily separated from t-amyl alcohol by extractive distillation. Effective agents are dipentene, amyl acetate and 1,4-dioxane.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: June 30, 1998
    Inventor: Lloyd Berg
  • Separation of 3-methyl-1-butanol from 1-pentanol by extractive distillation
    Patent number: 5763695
    Abstract: 3-Methyl-1-butanol cannot be separated from 1-pentanol by distillation or rectification because of the closeness of their boiling points. 3-Methyl-1-butanol is readily separated from 1-pentanol by extractive distillation. Effective agents are butyl benzoate, 2-undecanone and diethylene glycol methyl ether.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: June 9, 1998
    Inventor: Lloyd Berg
  • Separation of ethanol, isopropanol and water mixtures by azeotropic distillation
    Patent number: 5762765
    Abstract: Ethanol, isopropanol and water cannot be separated from each other by rectification because of the presence of minimum azeotropes. They are readily separated by azeotropic distillation. Effective agents are cyclopentane for ethanol from water, methyl acetate for isopropanol from water.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: June 9, 1998
    Inventor: Lloyd Berg
  • Separating 3-methyl-1-butanol from 1-pentanol by azeotropic distillation
    Patent number: 5763694
    Abstract: 3-Methyl-1-butanol cannot be separated from 1-pentanol by distillation or rectification because of the closeness of their boiling points. 3-Methyl-1-butanol is readily separated from 1-pentanol by azeotropic distillation. Effective agents are methylcyclohexane, methyl formate and tetrahydrofuran.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: June 9, 1998
    Inventor: Lloyd Berg
  • Separation of 2-butanol from tert.amyl alcohol by azeotropic distillation
    Patent number: 5759359
    Abstract: 2-Butanol cannot be separated from t-amyl alcohol by distillation or rectification because of the closeness of their boiling points. 2-Butanol is readily separated from t-amyl alcohol by azeotropic distillation. Effective agents are methyl acetate, ethyl propionate and octane.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: June 2, 1998
    Inventor: Lloyd Berg
  • Separation of 2-methyl-1-propanol from 2-methyl-1-butanol by extractive distillation
    Patent number: 5738763
    Abstract: 2-Methyl-1-propanol is difficult to separate from 2-methyl-1-butanol by conventional distillation or rectification because of the proximity of their boiling points. 2-Methyl-1-propanol can be readily separated from 2-methyl-1-butanol by extractive distillation. Effective agents are hexyl formate, 2-heptanone and dipropyl amine.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: April 14, 1998
    Inventor: Lloyd Berg
  • Separation of T-Amyl alcohol from 2-methyl-1- propanol by azeotropic distillation
    Patent number: 5738764
    Abstract: T-Amyl alcohol is difficult to separate from 2-methyl-1-propanol by conventional distillation or rectification because of the proximity of their boiling points. T-Amyl alcohol can be easily separated from 2-methyl-1-propanol by azeotropic distillation. Effective agents are triethyl amine, ethyl ether and acetone.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: April 14, 1998
    Inventor: Lloyd Berg
  • Separation of 2-methyl-1-propanol from 1-butanol by extractive distillation
    Patent number: 5723024
    Abstract: 2-Methyl-1-propanol is difficult to separate from 1-butanol by conventional distillation or rectification because of the proximity of their boiling points. 2-Methyl-1-propanol can be readily separated from 1-butanol by extractive distillation. Effective agents are ethyl benzene, amyl acetate and propoxypropanol.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: March 3, 1998
    Inventor: Lloyd Berg
  • Separation of 2-methyl-1-propanol from 2-butanol by extractive distillation
    Patent number: 5723025
    Abstract: 2-Methyl-1-propanol is difficult to separate from 2-butanol by conventional distillation or rectification because of the proximity of their boiling points. 2-Methyl-1-propanol can be readily separated from 2-butanol by extractive distillation. Effective agents are hexyl acetate, dimethyl phthalate and p-xylene.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: March 3, 1998
    Inventor: Lloyd Berg
  • Separation of 1,2,4-trimethylbenzene from 1,2,3-trimethylbenzene by azeotropic distillation
    Patent number: 5720857
    Abstract: 1,2,4-Trimethylbenzene is difficult to sepparate from 1,2,3-trimethylbenzene because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are 1-propanol, methyl formate and 1-nitropropane.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: February 24, 1998
    Inventor: Lloyd Berg
  • Separation of t-amyl alcohol from 2-methyl-1-propanol by extractive distillation
    Patent number: 5718809
    Abstract: T-Amyl alcohol and 2-methyl-1-propanol are difficult to separate by conventional distillation or rectification because of the proximity of their boiling points. T-Amyl alcohol can be easily separated from 2-methyl-1-propanol by extractive distillation. Effective agents are N,N-dimethylacetamide, cyclohexyl amine and glycerol.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: February 17, 1998
    Inventor: Lloyd Berg
  • Separation of 2-methyl-1-propanol from 1-butanol by azeotropic distillation
    Patent number: 5716499
    Abstract: 2-Methyl-1-propanol is difficult to separate from 1-butanol by conventional distillation or rectification because of the proximity of their boiling points. 2-Methyl-1-propanol can be easily separated from 1-butanol by azeotropic distillation. Effective agents are isobutyl acetate, methyl cyclohexane and 2-nitropropane.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: February 10, 1998
    Inventor: Lloyd Berg
  • Separation of 1-butanol from 2-pentanol by extractive distillation
    Patent number: 5709781
    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 easily separated from 2-pentanol by extractive distillation. Effective agents are anisole, ethyl nonanate and butyl ether.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: January 20, 1998
    Inventor: Lloyd Berg
  • Separation of phellandrene from limonene by extractive distillation
    Patent number: 5705038
    Abstract: Phellandrene is difficult to separate from limonene by conventional distillation or rectification because of the proximity of their boiling points. Phellandreneecan be readily separated from limonene by extractive distillation. Effective agents are o-cresol, tripropylene glycol and isophorone.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: January 6, 1998
    Inventor: Lloyd Berg