Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Radical -xh acid – or anhydride – acid halide or salt thereof...
Reexamination Certificate
2008-11-06
2011-10-04
Lilling, Herbert J. (Department: 1657)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Radical -xh acid, or anhydride, acid halide or salt thereof...
C435S067000, C435S134000, C435S135000, C554S224000
Reexamination Certificate
active
08030352
ABSTRACT:
A method of producing a retinyl ester compound comprising subjecting a composition comprising retinyl or a retinyl ester and a fat or oil of animal or vegetable origins to enzyme catalysed trans-esterification in solvent free conditions to produce a retinyl ester.
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Haraldsson et al., “The Preparation of Concentrates of Eicosapentaenoic Acid and Docosahexaenoic Acid by Lipase-catalyzed Transesterification of Fish Oil with Ethanol”, Journal of the American Oil Chemists' Society, American Oil Chemists; Society Campaign, US, Vo. 74, No. 11, (1997), pp. 1419-1424, XP000736917.
Maugard, et al., “Enzymatic Synthesis of Derivatives of Vitamin A in Organic Media”, Journal of Molecular Catalysis B Enzymatic, vol. 8, No. 4-6, Feb. 18, 2000, pp. 275-280, XP002270197.
O'Connor, et al., “Candida-Cylindracea Lipase-Catalysed Synthesis of Retinyl and Oleyl Palmitates Carbon Chain Length Dependence of Esterase Activity”, Australian Journal of Chemistry, vol. 45, No. 4, 1992, pp. 641-649, XP0008027552.
Ajima, et al., “Retinyl Esters Synthesis by Polyethylene Glycol-Modified Lipase in Benzene”, Biotechnology Letters, vol. 8, No. 8, 1986, pp. 547-552, XP0008027553.
Dossat, et al., “Lipase-catalysed Transesterification of High Oleic Sunflower Oil”, Enzyme and Microbial Technology, vol. 30, No. 1, Jan. 8, 2002, pp. 90-94, XP002270198.
Haraldsson, et al., “The Preparation of Concentrates of Eicosapentaenoic Acid and Docosahexaenoic Acid by Lipase-catalyzed Transesterification of Fish Oil with Ethanol”, Journal of the American Oil Chemists' Society, American Oil Chemists' Society Campaign, US, vol. 74, No. 11, Nov. 1, 1997, pp. 1419-1424, XP000736917.
Bosley John Anthony
Harding Clive Roderick
Rawlins Christopher
Rogers Julia Sarah
Scott Ian Richard
Lilling Herbert J.
Squillante, Jr. Edward A.
Unilever Home & Personal Care USA division of Conopco, Inc
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