| Patent Number |
Title Of Patent |
Date Issued |
| 5795447 |
Separation of 2-butanol from isobutanol by extractive distillation |
Aug. 18, 1998 |
| 5789629 |
Separating 3-methyl-1-butanol from 1-pentanol using certain organic compounds as the agent in extractive distillation |
Aug. 4, 1998 |
| 5779862 |
Separation of 2-methyl-1-butanol and 3-methyl-1-butanol from 1-pentanol by azeotropic distillation |
Jul. 14, 1998 |
| 5776321 |
Separation of t-amyl alcohol from 1-propanol by azeotropic distillation |
Jul. 7, 1998 |
| 5776322 |
Separation of 4-methyl-2-pentanol from 3-methyl-1-butanol by azeotropic distillation |
Jul. 7, 1998 |
| 5772853 |
Separation of 1-propanol from t-amyl alcohol by extractive distillation |
Jun. 30, 1998 |
| 5772909 |
Process for separation of vanillin from other chemicals by means of azeotropic distillation with dibenzyl ether and mixtures of vanillin and dibenzyl ether used in such process |
Jun. 30, 1998 |
| 5763694 |
Separating 3-methyl-1-butanol from 1-pentanol by azeotropic distillation |
Jun. 9, 1998 |
| 5763695 |
Separation of 3-methyl-1-butanol from 1-pentanol by extractive distillation |
Jun. 9, 1998 |
| 5762765 |
Separation of ethanol, isopropanol and water mixtures by azeotropic distillation |
Jun. 9, 1998 |
| 5759359 |
Separation of 2-butanol from tert.amyl alcohol by azeotropic distillation |
Jun. 2, 1998 |
| 5738763 |
Separation of 2-methyl-1-propanol from 2-methyl-1-butanol by extractive distillation |
Apr. 14, 1998 |
| 5723024 |
Separation of 2-methyl-1-propanol from 1-butanol by extractive distillation |
Mar. 3, 1998 |
| 5723025 |
Separation of 2-methyl-1-propanol from 2-butanol by extractive distillation |
Mar. 3, 1998 |
| 5720857 |
Separation of 1,2,4-trimethylbenzene from 1,2,3-trimethylbenzene by azeotropic distillation |
Feb. 24, 1998 |
| 5718809 |
Separation of t-amyl alcohol from 2-methyl-1-propanol by extractive distillation |
Feb. 17, 1998 |
| 5716499 |
Separation of 2-methyl-1-propanol from 1-butanol by azeotropic distillation |
Feb. 10, 1998 |
| 5709781 |
Separation of 1-butanol from 2-pentanol by extractive distillation |
Jan. 20, 1998 |
| 5698080 |
Separation of phellandrene from limonene by azeotropic distillation |
Dec. 16, 1997 |
| 5693194 |
Separation of butyraldehyde from ethanol by extractive distillation |
Dec. 2, 1997 |
| 5693193 |
Process for recovering propylene oxide |
Dec. 2, 1997 |
| 5658435 |
Separation of 2-methyl -1-propanol from 2-butanol by azeotropic distillation |
Aug. 19, 1997 |
| 5645695 |
Separation of 2-methyl-1-propanol from 2-methyl-1-butanol by azeotropic distillation |
Jul. 8, 1997 |
| 5645696 |
Process for preparing unsaturated carboxylic acid esters and apparatus for preparing the same |
Jul. 8, 1997 |
| 5602294 |
Separation of o-xylene from p-xylene and m-xylene by extractive distillation |
Feb. 11, 1997 |
| 5597455 |
Separation of 3-carene and limonene by extractive distillation |
Jan. 28, 1997 |
| 5582693 |
Separation of 3-carene and limonene by azeotropic distillation |
Dec. 10, 1996 |
| 5580427 |
Separation of butyraldehyde from ethanol by azeotropic distillation |
Dec. 3, 1996 |
| 5562863 |
Methods and compositions for inhibiting vinyl aromatic monomer polymerization |
Oct. 8, 1996 |
| 5470443 |
Separation of isopropanol from 2-butanone by extractive distillation |
Nov. 28, 1995 |
| 5470440 |
Method for inhibiting vinyl aromatic monomer polymerization |
Nov. 28, 1995 |
| 5466345 |
Separation of o-xylene from p-xylene and m-xylene by azeotropic distillation |
Nov. 14, 1995 |
| 5460700 |
Separation of 1-hexene from hexane by extractive distillation |
Oct. 24, 1995 |
| 5458741 |
Separation of benzene from close boiling hydrocarbons by extractive distillation |
Oct. 17, 1995 |
| 5453166 |
Separation of ethanol from 2-butanone by extractive distillation |
Sep. 26, 1995 |
| 5453167 |
Separation of xylenes by extractive distillation |
Sep. 26, 1995 |
| 5447608 |
Separation of 2-pentanol, 3-methyl-2-butanol and 1-butanol by azeotropic distillation |
Sep. 5, 1995 |
| 5445716 |
Separation of ethanol from isopropanol by extractive distillation |
Aug. 29, 1995 |
| 5445715 |
Separation of m-xylene from xylenes by azeotropic distillation |
Aug. 29, 1995 |
| 5443697 |
Separation of heptane from 1-heptene by extractive distillation |
Aug. 22, 1995 |
| 5441608 |
Separation of xylenes by extractive distillation |
Aug. 15, 1995 |
| 5439561 |
Separation of 3-methyl-2-butanol from 2-pentanol by azeotropic |
Aug. 8, 1995 |
| 5437770 |
Separation of ethanol from isopropanol by azeotropic distillation |
Aug. 1, 1995 |
| 5425854 |
Separation of methylene chloride from tetrahydrofuran by extractive distillation |
Jun. 20, 1995 |
| 5425853 |
Separation of propylene glycol from ethylene glycol by azeotropic distillation |
Jun. 20, 1995 |
| 5423953 |
Process for recovering column bottom residues produced by fractional distillation of ethylene glycol |
Jun. 13, 1995 |
| 5423954 |
Separation of 2-butanone from isopropanol by azeotropic distillation |
Jun. 13, 1995 |
| 5421965 |
Separation of glycerine from bis(hydroxymethyl)tetrahydrofuran by azeotropic distillation |
Jun. 6, 1995 |
| 5417812 |
Separation of ethyl benzene from xylenes by azeotropic distillation |
May. 23, 1995 |
| 5417813 |
Separation of 1-butanol from 2-pentanol by azeotropic distillation |
May. 23, 1995 |
