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 mesitylene from 1,2,4-trimetyhlbenzene by azeotropic distillation
    Patent number: 6136155
    Abstract: Mesitylene is difficult to separate from 1,2,4-Trimethylbenzene because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are isopropyl acetate, 2-pentanol and acetonitrile.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: October 24, 2000
    Inventor: Lloyd Berg
  • Separation of 9,11-Diene C18 fatty acid from 10,12-Diene C18 fatty acid by azeotropic distillation
    Patent number: 6042697
    Abstract: 9,11- Diene C18 fatty acid cannot be separated from 10,12-Diene C18 fatty acid by conventional rectification because of the proximity of their boiling points. 9,11-Diene C18 fatty acid can be readily separated from 10,12-Diene fatty acid by azeotropic distillation. Effective agents are propyl formate, butyl ether, methyl pivalate and cyclopentanone.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: March 28, 2000
    Inventor: Lloyd Berg
  • Separation of 3-methyl-2-pentenal from n-butanol by azeotropic distillation
    Patent number: 6039846
    Abstract: 3-Methyl-2-pentenal cannot be separated from 1-butanol by conventional rectification because of the proximity of their boiling points. 3-methyl-2-pentenal can be readily separated from n-butanol by azeotropic distillation. Effective agents are dimethoxymethane, petroleum ether and tetramethylortho-silicate.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: March 21, 2000
    Inventor: Lloyd Berg
  • Separation of mesitylene from 4-ethyl toluene by azeotropic distillation
    Patent number: 6033529
    Abstract: Mesitylene cannot be separated from 4-ethyl toluene by distillation because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are isopropyl palmitate, triacetin and methyl salicylate.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: March 7, 2000
    Inventor: Lloyd Berg
  • Separation of 2-methyl-1-butanol and 3-methyl-1-butanol from 1-pentanol by extractive distillation
    Patent number: 6024841
    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 extractive distillation. Effective agents are 3-carene, propylene glycol phenyl ether and dimethylsulfoxide.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: February 15, 2000
    Inventor: Lloyd Berg
  • Separation of conjugated linoleic acids by azeotropic distillation
    Patent number: 6019874
    Abstract: Conjugated linoleic acids cannot be separated by distillation or rectification because of the closness of their boiling points. Conjugated linoleic acids can be separated by azeotropic distillation. Effective agents are butyraldehyde, butyl ether and 1-methyl-2-pyrrolidinone.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: February 1, 2000
    Inventors: Lloyd Berg, Terry Brix
  • Separation of 3-methyl-2-pentenal from N-butanol by extractive distillation
    Patent number: 6017423
    Abstract: 3-Methyl-2-pentenal cannot be separated from n-butanol by conventioal rectification because of the proximity of their boiling points. 3-methyl-2-pentenal can be readily separated from n-butanol by extractive distillation. Effective agents are 1-methyl-2-pyrrolidinone, 1,4-butanediol and phenol.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: January 25, 2000
    Inventor: Lloyd Berg
  • Separation of cumene from 3-ethyl toluene by azeotropic distillation
    Patent number: 6004435
    Abstract: Cumene cannot be separated from 3-ethyl toulene by distillation because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are methyl salicylate, diethylene glycol butyl ether and 3-nitrotoluene.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: December 21, 1999
    Inventor: Lloyd Berg
  • Separation of ethyl acetate from ethanol by azeotropic distillation
    Patent number: 5993610
    Abstract: Ethyl acetate cannot be separated from ethanol by distillation or rectification because of the closeness of their boiling points. Ethyl acetate is readily separated from ethanol by azeotropic distillation. Effective agents are ethyl ether, methyl formate and cyclohexane.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: November 30, 1999
    Inventor: Lloyd Berg
  • Separation of 1,2,4-trimethylbenzene from 1,2,3-trimethylbenzene by extractive distillation
    Patent number: 5972172
    Abstract: 1,2,4-Trimethylbenzene is difficult to separate from 1,2,3-trimethylbenzene by conventional distillation or rectification because of the proximity of their boiling points. 1,2,4-trimethylbenzene can be readily separated from 1,2,3-trimethylbenzene by extractive distillation. Effective agents are 3-nitrotoluene, m-cresol and sulfolane.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: October 26, 1999
    Inventor: Lloyd Berg
  • Separation of t-amyl alcohol from n-butanol by extractive distillation
    Patent number: 5961789
    Abstract: T-Amyl alcohol cannot be separated from n-butanol by distillation or rectification because of the closeness of their boiling points. T-Amyl alcohol is readily separated from n-butanol by extractive distillation. Effective agents are dimethylsulfoxide, N.N.dimethyl formamide and ethanolamine.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: October 5, 1999
    Inventor: Lloyd Berg
  • Separation of linoleic acid from linolenic acid by azeotropic distillation
    Patent number: 5928478
    Abstract: Linoleic acid cannot be separated from linolenic acid by distillation or rectification because of the closeness of their boiling points. Linoleic acid is readily separated from linolenic acid by azeotropic distillation. Effective agents are nonane, dimethyl formamide, 2-nitropropane and pentyl propionate.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: July 27, 1999
    Inventor: Lloyd Berg
  • Separation of T-amyl alcohol from 2- methyl-1 -propanol azeotropic distillation
    Patent number: 5908538
    Abstract: 2-Methyl-1-propanol cannot be separated from t-amyl alcohol by distillation or rectification because of the closeness of their boiling points. 2-Methyl-1-propanol is readily separated from t-amyl alcohol by azeotropic distillation. Effective agents are butyl propionate, cyclohexane and 2,2-dimethoxypropane.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: June 1, 1999
    Inventor: Lloyd Berg
  • Separation of t-amyl alcohol from n-butanol by azeotropic distillation
    Patent number: 5904815
    Abstract: t-Amyl alcohol cannot be separated from n-butanol by distillation or rectification because of the closeness of their boiling points. t-Amyl alcohol is readily separated from n-butanol by azeotropic distillation. Effective agents are propyl acetate, tetrahydrofuran and heptane.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: May 18, 1999
    Inventor: Lloyd Berg
  • Separation of acetone from isopropanol-water mixtures by extractive distillation
    Patent number: 5897750
    Abstract: Acetone cannot be separated from a mixture of isopropanol and water because of the closeness of their boiling points. Acetone can be easily separated from isopropanol and water by extractive distillation. Effective extractive agents are 1-nitropropane, 3-carene, dimethylsulfoxide and 3-pentanone.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: April 27, 1999
    Inventor: Lloyd Berg
  • Method for separating 2-butanol from t-amyl alcohol using certain organic compounds as the agent in extractive distillation
    Patent number: 5879517
    Abstract: 2-Butanol cannot be sparated 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 extractive distillation. Effective agents are butyl ether, benzyl acetate and 1,2,4-trimethyl benzene.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: March 9, 1999
    Inventor: Lloyd Berg
  • Separation of methyl ethyl ketone from ethanol by extractive distillation
    Patent number: 5876569
    Abstract: Methyl ethyl ketone cannot be separated from ethanol by distillation or rectification because of the closeness of their boiling points. Methyl ethyl ketone is readily separated from ethanol by extractive distillation. Effective agents are methyl benzoate, phenol, glycerol and nitroethane.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: March 2, 1999
    Inventor: Lloyd Berg
  • Separation of methyl ethyl ketone from ethanol by azeotropic distillation
    Patent number: 5868907
    Abstract: Methyl ethyl ketone cannot be separated from ethanol by distillation or rectification because of the closeness of their boiling points. Methyl ethyl ketone is readily separated from ethanol by azeotropic distillation. Effective agents are amyl acetate, methyl formate, 2,2-dimethyl butane and 2,3-dimethyl butane.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: February 9, 1999
    Inventor: Lloyd Berg
  • Separation of 4-methyl-2-pentanol from 3-methyl-1-butanol by extractive distillation
    Patent number: 5851362
    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 extractive distillation. Effective agents are dodecane, dimethylformamide and dimethylsulfoxide.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: December 22, 1998
    Inventor: Lloyd Berg
  • Separation of 3-carene from limonene by extractive distillation
    Patent number: 5840160
    Abstract: 3-Carene is difficult to separate from limonene by conventional distillation or rectification because of the proximity of their boiling points. 3-Carene can be readily separated from limonene by extractive distillation. Effective agents are o-cresol, 2,6-dimethyl-4-heptanone and triethylene glycol.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: November 24, 1998
    Inventor: Lloyd Berg