Appeal No. 1997-3529 Page 2
Application No. 08/463,939
derived from a reading of exemplary claim 1, which is
reproduced below.
A diesel fuel composition comprising from
about 85 to about 95 weight percent of dimethyl
ether, from about 1 to about 20 weight percent
of water, and from about 1 to about 20 weight
percent of methanol, wherein the lowest
concentration of methanol in weight percent,
min. meth. conc., that is permitted in the
diesel fuel composition containing a given water
concentration in weight percent,
water conc., is defined by the relationship
0~ min. meth. conc.š 0.5 (water conc.)-2.6
and the largest concentration of methanol
in weight percent, max. meth. conc., that
is permitted in the diesel fuel containing
a given water concentration in weight
percent is defined by the relationship
max. meth. conc. ~ 20-0.6(water
conc.).
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
Neely 2,708,922 May 24,
1955
Brown et al. (Brown) 3,846,088 Nov. 05,
1974
Norton et al. (Norton) 4,603,662 Aug. 05,
1986
Gro$ 2 654,470 Dec. 20,
1937
(German Patent)
2All references to Gro$ in this decision are to the
English language translation of the German Patent of record.
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