Appeal No. 2002-1551
Application No. 09/286,386
(b) a carrier for said pigment or dye selected from the
group consisting of aqueous solutions and water soluble,
dispersible or emulsifiable binders; and
(c) a water repelling agent dispersed in the carrier (b) in
an amount sufficient to render the ink water proof once dried,
wherein the water soluble, dispersible or emulsifiable pigment or
dye is selected from thermochromic, photochromic and fluorescent
pigments and dyes.
In the rejection of the appealed claims, the examiner relies
upon the following references:
Hwang 4,269,627 May 26, 1981
Amon et al. (Amon) 5,630,869 May 20, 1997
Halbrook, Jr. et al. 5,883,043 Mar. 16, 1999
(Halbrook) (filed Aug. 27, 1997)
Appellants' claimed invention is directed to a security
printing ink that is water proof when dried. The ink comprises a
pigment or dye, a carrier for the pigment or dye, and a water
repelling agent which renders the ink water proof when dried.
The pigment or dye is thermochromic, photochromic or fluorescent.
According to appellants, the ink provides a security feature
which "permits the printing of latent images that are revealed
with a change in ambient conditions such as light and
temperature" (page 2 of principal brief, fourth paragraph).
All the appealed claims stand rejected under the judicially
created doctrine of obviousness-type double patenting over
claims 1-23 of U.S. Patent No. 5,883,043. Also, all the appealed
-2-
Page: Previous 1 2 3 4 5 6 7 Next
Last modified: November 3, 2007