Appeal No. 2004-1861
Application No. 09/846,483
compression-ignited (diesel) marine engine (claims 1-8 and 11-
16) and to a method of lubricating a medium speed compression-
ignited marine engine (claims 10 and 17). Further details of
this appealed subject matter are recited in representative
claims 1 and 10 reproduced below:
1. A trunk piston marine engine lubricating oil
composition for a medium speed compression-ignited
(diesel) marine engine wherein the composition is
dispersant-free and has a Total Base Number (TBN) of
25 or greater, and comprises:
(A) an oil of lubricating viscosity, in a major
amount, and added thereto:
(B) an oil-soluble overbased metal detergent
additive, as the sole overbased metal
detergent, consisting of one or more
aromatic carboxylates, in a minor amount,
and
(C) an antiwear additive, in a minor amount.
10. A method of lubricating a medium speed
compression-ignited marine engine, which method
comprises supplying to the engine the truck [sic]
piston marine engine oil lubricating composition as
claimed in claim 1.
The examiner relies on the following prior art references
as evidence of unpatentability:
Clarke 4,283,294 Aug. 11, 1981
Fujitsu et al. 6,114,288 Sep. 05, 2000
(Fujitsu) (filed May 3, 1999)
Claims 1 through 8 and 10 through 17 on appeal stand
rejected under 35 U.S.C. § 103(a) as unpatentable over either
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007