THIS OPINION WAS NOT WRITTEN FOR PUBLICATION
The opinion in support of the decision being entered today
(1) was not written for publication in a law journal and
(2) is not binding precedent of the Board.
Paper No. 15
UNITED STATES PATENT AND TRADEMARK OFFICE
_______________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
_______________
Ex parte WARREN A. THALER,
JOHN C. NEWLOVE, CRUISE K. JONES
and DAVID B. ACKER
______________
Appeal No. 94-3973
Application 08/029,7541
_______________
ON BRIEF
_______________
Before JOHN D. SMITH, GARRIS and WARREN, Administrative Patent Judges.
WARREN, Administrative Patent Judge.
Decision on Appeal
This is an appeal under 35 U.S.C. ' 134 from the decision of the examiner finally rejecting
claims 1 through 4, 8 and 9. Claims 1 and 8 are illustrative of the claims on appeal:
1. A drilling mud additive concentrate for use in oil-based drilling muds consisting essentially of:
a hydrocarbon oil and viscosification agent, the viscosification agent being selected from
sulfonated and neutralized sulfonated polymers and being present in amounts ranging from about
5 gm to about 20 gm per 100 gm of oil.
Claim 8. In the method of preparing an oil-based drilling mud fluid composition by combining a
viscosification agent selected from the group consisting of sulfonated and neutralized sulfonated
1 Application for patent filed March 11, 1993. According to appellants, this application is a
continuation of application 07/909,321, filed July 6, 1992, now abandoned, which in turn is a
continuation of application 07/720,043, filed June 24, 1991, now abandoned.
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