Organic compounds -- part of the class 532-570 series – Organic compounds – Cyclopentanohydrophenanthrene ring system containing
Reexamination Certificate
2007-02-06
2007-02-06
Badio, Barbara P. (Department: 1617)
Organic compounds -- part of the class 532-570 series
Organic compounds
Cyclopentanohydrophenanthrene ring system containing
Reexamination Certificate
active
10129279
ABSTRACT:
The present invention provides a method of obtaining highly pure phytosterols practically and efficiently from crude phytosterol compositions derived from vegetable fats and oils. That is, the present invention provides a method of saponifying fatty esters contained in crude phytosterol compositions with an alkali in a mixed solvent of an lower alcohol and water, as well as a process for producing phytosterols, which comprises, after this saponifying method, cooling the reaction solution to precipitate crystals of phytosterols, and separating the obtained crystals.
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Nekrasova et al., “Separation of phytosterol from aqueous alcohol solutions of saponified pitch by crystallization using the LTA method.” Izv. Vys. Uch. Zav., Lesnoi Zhurnal, vol. 17(6), pp. 105-108 (English Abstract Only).
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Hattori Yasuyuki
Horio Masamitsu
Kono Jun
Badio Barbara P.
Kao Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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