Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2002-12-12
2008-09-02
Drodge, Joseph W (Department: 1797)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C210S702000, C210S737000, C210S806000, C426S417000, C426S425000, C426S429000, C554S008000, C554S020000
Reexamination Certificate
active
07419596
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.
REFERENCES:
patent: 4615839 (1986-10-01), Seto et al.
patent: 4792418 (1988-12-01), Rubin et al.
patent: 4870011 (1989-09-01), Suzuki et al.
patent: 5336792 (1994-08-01), Sola et al.
patent: 5539133 (1996-07-01), Kohn et al.
patent: 6140486 (2000-10-01), Facciotti et al.
patent: 6166230 (2000-12-01), Bijl et al.
patent: 6344574 (2002-02-01), Foglia et al.
patent: 6492537 (2002-12-01), Foglia et al.
patent: 2001/0025114 (2001-09-01), Bijl et al.
patent: 1215274 (2002-06-01), None
patent: 59059644 (1984-04-01), None
patent: 59067241 (1984-04-01), None
patent: WO 8604354 (1986-07-01), None
patent: WO 03/049832 (2003-06-01), None
International Search Report dated Mar. 26, 2003 for PCT/US02/39930 (now WO 03/049832).
International Preliminary Examination Report dated Nov. 17, 2003 for PCT/US02/39930 (now WO 03/049832).
Supplementary European Search Report dated Jun. 22, 2005 by Examiner M. Dekeirel.
Diltz Sandra I.
Driver Robert H.
Dueppen Daniel G.
Zeller Samuel G.
Drodge Joseph W
Martek Biosciences Corporation
LandOfFree
Extraction and winterization of lipids from oilseed and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Extraction and winterization of lipids from oilseed and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extraction and winterization of lipids from oilseed and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3970076