Robert H Driver

US Patent:

7695626, Apr 13, 2010

Filed:

Aug 1, 2008

Appl. No.:

12/184974

Inventors:

Daniel G. Dueppen - Lexington KY, US
Samuel G. Zeller - Severn MD, US
Sandra I. Diltz - Severn MD, US
Robert H. Driver - New Canaan CT, US

Assignee:

Martek Biosciences Corp. - Columbia MD

International Classification:

B01D 11/00

US Classification:

210634, 210737, 210806, 426424, 426429, 426601, 435134, 554 12, 554 14, 554 20, 554175

Abstract:

A process for purifying a lipid composition having predominantly neutral lipid components having at least one long chain polyunsaturated fatty acid is disclosed. The process employs contacting the lipid composition with a polar solvent, such as acetone, wherein the solvent is selected such that contaminants are less soluble in the solvent than is the long chain polyunsaturated fatty acid. The process is typically conducted at cooler temperatures, including about 0 C. Upon precipitation of the contaminants from the lipid composition, a separation is conducted to remove the precipitated material from the lipid composition. The long chain polyunsaturated fatty acids can include ARA, DPA, EPA, and/or DHA. The process of the present invention effectively winterizes lipid compositions, thereby reducing the tendency of such compositions to become hazy.

US Patent:

8012354, Sep 6, 2011

Filed:

Apr 9, 2010

Appl. No.:

12/757383

Inventors:

Daniel G. Dueppen - Lexington KY, US
Samuel G. Zeller - Severn MD, US
Sandra I. Diltz - Severn MD, US
Robert H. Driver - New Canaan CT, US

Assignee:

Martek Biosciences Corporation - Columbia MD

International Classification:

B01D 11/00
C11B 1/10

US Classification:

210634, 210639, 210702, 210774, 210787, 210806, 554 12, 554 20, 435134, 426439, 426430, 426601

Abstract:

A process for purifying a lipid composition having predominantly neutral lipid components having at least one long chain polyunsaturated fatty acid is disclosed. The process employs contacting the lipid composition with a polar solvent, such as acetone, wherein the solvent is selected such that contaminants are less soluble in the solvent than is the long chain polyunsaturated fatty acid. The process is typically conducted at cooler temperatures, including about 0 C. Upon precipitation of the contaminants from the lipid composition, a separation is conducted to remove the precipitated material from the lipid composition. The long chain polyunsaturated fatty acids can include ARA, DPA, EPA, and/or DHA. The process of the present invention effectively winterizes lipid compositions, thereby reducing the tendency of such compositions to become hazy.

US Patent:

8480904, Jul 9, 2013

Filed:

Sep 6, 2011

Appl. No.:

13/226324

Inventors:

Daniel G. Dueppen - Lexington KY, US
Samuel G. Zeller - Severn MD, US
Sandra I. Diltz - Severn MD, US
Robert H. Driver - New Canaan CT, US

Assignee:

DSM IP Assets B.V. - Heelen

International Classification:

B01D 11/00
C11B 1/10

US Classification:

210634, 210639, 210702, 210737, 210774, 210787, 210806, 426429, 426430, 426601, 554 12, 554 13, 554 14, 554 20, 554 21, 554175, 554224, 435134

Abstract:

A process for purifying a lipid composition having predominantly neutral lipid components having at least one long chain polyunsaturated fatty acid is disclosed. The process employs contacting the lipid composition with a polar solvent, such as acetone, wherein the solvent is selected such that contaminants are less soluble in the solvent than is the long chain polyunsaturated fatty acid. The process is typically conducted at cooler temperatures, including about 0 C. Upon precipitation of the contaminants from the lipid composition, a separation is conducted to remove the precipitated material from the lipid composition. The long chain polyunsaturated fatty acids can include ARA, DPA, EPA, and/or DHA. The process of the present invention effectively winterizes lipid compositions, thereby reducing the tendency of such compositions to become hazy.

US Patent:

20050115897, Jun 2, 2005

Filed:

Dec 12, 2002

Appl. No.:

10/498598

Inventors:

Daniel Dueppen - Lexington KT, US
Samuel Zeller - Severn MD, US
Sandra Diltz - Severn MD, US
Robert Driver - New Canaan CT, US

International Classification:

B01D011/00

US Classification:

210634000, 210702000, 554020000, 554021000, 436071000

Abstract:

A process for purifying a lipid composition having predominantly neutral lipid components having at least one long chain polyunsaturated fatty acid is disclosed. The process employs contacting the lipid composition with a polar solvent, such as acetone, wherein the solvent is selected such that the contaminants are less soluble in the solvent than in the long chain polyunsaturated fatty acid. The process is typically conducted at cooler temperatures including about 0 C. Upon precipitation of the contaminants from the lipid composition, a separation is conducted to remove the precipitated material from the lipid composition. The long chain polyunsaturated fatty acids can include ARA, DPA, EPA and/or DHA. The process effectively winterizes lipid compositions, thereby reducing the tendency of such compositions to become hazy.