Appeal No. 1998-1405
Application No. 08/379,600
and reads as follows:
7. A process for the preparation of a metal
sulphide which comprises reacting an elementary carbon
source and gaseous H S at a temperature of 900 to 1500EC
2
to produce gaseous CS in a first reaction zone, passing
2
the gaseous product from the first reaction zone,
containing CS prepared in situ and unreacted H S,2 2
directly to a second reaction zone, which is separate
from the first reaction zone, containing a metal oxide
corresponding to the metal sulphide and reacting the
metal oxide with the gaseous CS at a temperature of from
2
500 to 1500EC to prepare the metal sulphide.
In support of his rejection, the examiner relies on the
following prior art:
Johnson et al. (Johnson) 3,009,781 Nov. 21,
1961
Henderson et al. (Henderson) 3,748,095 Jul. 24,
1973
Claims 7 through 21 stand rejected under 35 U.S.C. § 103
as unpatentable over the combined disclosures of Henderson and
Johnson.
We have carefully reviewed the claims, specification and
applied prior art, including all of the arguments advanced by
both the examiner and appellants in support of their
2
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007