Gilbert T Gavlin

US Patent:

43168469, Feb 23, 1982

Filed:

May 22, 1978

Appl. No.:

5/908275

Inventors:

Gilbert Gavlin - Lincolnwood IL
Romas Cesas - Chicago IL

Assignee:

Custom Organics, Inc. - Chicago IL

International Classification:

C07C103127
C07C10334
C07C10336
C07D20706

US Classification:

26032645

Abstract:

The present invention relates to the recovery of three aprotic amide solvents from their water solutions by extraction with a selected class of organic solvents characterized generally by having two electron withdrawing substituents, exemplified by fluorine and chlorine, located on a carbon atom which also contains a hydrogen atom.

US Patent:

57256373, Mar 10, 1998

Filed:

Oct 31, 1996

Appl. No.:

8/741615

Inventors:

Gilbert Gavlin - Lincolnwood IL
Boris Goltsin - Skokie IL

Assignee:

Gas Research Institute - Chicago IL

International Classification:

B01D 1900

US Classification:

95231

Abstract:

A process for dehydrating gaseous fluids, such as natural gas, in which the gaseous fluid is contacted with a dehydrating composition having a glycol and a dissolved salt of at least one alkali metal carboxylate. The glycol is preferably ethylene glycol, diethylene glycol, triethylene glycol and mixtures thereof. The dissolved salt preferably constitutes up to about 33% by weight of the dehydrating composition.

US Patent:

54625840, Oct 31, 1995

Filed:

May 4, 1994

Appl. No.:

8/237764

Inventors:

Gilbert Gavlin - Lincolnwood IL

Assignee:

Gas Research Institute - Chicago IL

International Classification:

B01D 1900

US Classification:

95231

Abstract:

A process for dehydrating natural gas involving the use of a water absorbing composition containing a glycol and an aromatic solubility depressant.

US Patent:

57256365, Mar 10, 1998

Filed:

Sep 26, 1996

Appl. No.:

8/722862

Inventors:

Gilbert Gavlin - Lincolnwood IL
Boris Goltsin - Skokie IL

Assignee:

Gas Research Institute - Chicago IL

International Classification:

B01D 1900

US Classification:

95231

Abstract:

A process for dehydrating gaseous fluids, such as natural gas, in which the gaseous fluid is contacted with a substantially anhydrous composition having a glycol and an aromatics solubility depressant. The glycol is preferably ethylene glycol, diethylene glycol, triethylene glycol, and mixtures thereof.

US Patent:

53342917, Aug 2, 1994

Filed:

Jul 9, 1993

Appl. No.:

8/089691

Inventors:

Gilbert Gavlin - Lincolnwood IL
William M. Langdon - late of Green Valley AZ
Boris Goltsin - Skokie IL
Gunther Erlebacher - Skokie IL
Douglas A. Larson - River Forest IL

Assignee:

Safety-Kleen Corp. - Elgin IL

International Classification:

B01D 302
B01D 342

US Classification:

202234

Abstract:

An apparatus for removing non-volatile residues and impurities from a used solvent includes a self-scrubbing heating distillation subassembly for separating purified solvent for reuse and a controlled waste collector subassembly for overflowing concentrated residues and impurities stripped from the used solvent into an easy-to-service container. The apparatus may be disposed in a parallel in-line relationship with a circulating solvent flow circuit, such as in a dry cleaning operation, to continuously withdraw and purify aliquot portions of the circulating solvent stream, returning good solvent back to the flow circuit and concentrating non-volatile residues and impurities to a removable, environmentally sound serviceable container. The new and improved self-scrubbing heater assembly causes a rapid turbulent reboiling flow of solvent within a confined column and substantially avoids build up of residues on heat exchange surfaces for prolonged heater life and longer uninterrupted service life before service is needed.

US Patent:

52307786, Jul 27, 1993

Filed:

May 1, 1992

Appl. No.:

7/878185

Inventors:

Gilbert Gavlin - Lincolnwood IL
Boris Goltsin - Skokie IL

Assignee:

Gavlin Associates - Lincolnwood IL
Halocarbon Product Corporation - N. Augusta SC

International Classification:

B01D 340

US Classification:

203 58

Abstract:

A method for the separation of Isoflurane from its admixture with other compounds produced in the chlorination of 2-difluoromethoxy-1,1,1-trifluoroethane including subjecting the mixture to distillation, distilling off the Isoflurane and effecting said distillation as an extractive distillation employing an extractive solvent which retards the vapor pressure of Isoflurane.

US Patent:

39593711, May 25, 1976

Filed:

Oct 8, 1974

Appl. No.:

5/513106

Inventors:

Gilbert Gavlin - Lincolnwood IL
Abid Hashim Bengali - Chicago IL

Assignee:

Custom Organics, Inc. - Chicago IL

International Classification:

B01D 334
C07C10204
C07C10334

US Classification:

260561R

Abstract:

The present invention relates to the recovery of N,N-dimethylacetamide from a mixture containing N,N-dimethylacetamide and acetic acid. Potassium hydroxide is added to the mixture to neutralize the acetic acid and form potassium acetate having a low solubility in N,N-dimethylacetamide and a high affinity for water. The water concentration is adjusted to a desired range and a water non-solvent such as benzene is added to effect separation of an aqueous solution of potassium acetate from the dimethylacetamide as two distinct phases. The phases are then separated and the dimethylacetamide removed from the solvent phase by distillation.

US Patent:

58534580, Dec 29, 1998

Filed:

Aug 18, 1997

Appl. No.:

8/916732

Inventors:

Gilbert Gavlin - Lincolnwood IL
Boris Goltsin - Skokie IL

Assignee:

Gavlin Associates, Inc - Lincolnwood IL

International Classification:

B01D 4706

US Classification:

95231

Abstract:

A solvent composition comprising a glycol, a potassium carboxylate and a neopentyl alcohol having improved dehydrating capacity and reduced absorbency for aliphatic and aromatic hydrocarbons.