Appeal No. 1996-1783
Application No. 08/195,025
at least one of a glycerol alginate, a propylene glycol
alginate, gellan gum or welan gum (Brief, page 3). Claim 20
is illustrative of the subject matter on appeal and is
reproduced below:
20. A process for the stabilization of vesicles formed
from a lipid-phase membrane containing at least one ionic or
nonionic amphiphilic lipid or a mixture thereof, said process
comprising encapsulating an aqueous phase, in the form of a
dispersion in an aqueous phase, adding at least one
stabilizing agent to said aqueous dispersion phase, said
stabilizing agent being selected from the group consisting of
a glycerol alginate, a propylene glycol alginate, gellan gum
and welan gum and being present in an amount effective so as
to stabilize said vesicles against surfactants and, when
present, an additional phase comprising a fatty phase.
The examiner has relied upon the following references as
evidence of obviousness:
Fujiwara et al. (Fujiwara) 4,670,185 Jun. 2, 1987
Popescu et al. (Popescu) 4,708,861 Nov. 24, 1987
Handjani et al. (Handjani) 4,830,857 May 16, 1989
Tin 5,008,109 Apr. 16, 1991
Meybeck et al. (Meybeck) 5,290,562 Mar. 1, 1994
Gaonkar 5,332,595 Jul. 26, 1994
(filed Nov. 5,
1992)
Claims 20 through 25 stand rejected under 35 U.S.C. §
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007