The opinion in support of the decision being entered today was not written
for publication and is not binding precedent of the Board.
Paper No. 13
UNITED STATES PATENT AND TRADEMARK OFFICE
____________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
____________
Ex parte JOHN ALLEN, ALEC EWEN, and ROBERT GURNEY
____________
Appeal No. 1998-0277
Application No. 08/478,009
____________
ON BRIEF
____________
Before COHEN, STAAB, and BAHR, Administrative Patent Judges.
COHEN, Administrative Patent Judge.
DECISION ON APPEAL
This is an appeal from the final rejection of claims 20
through 25 and 29 through 33. These claims constitute all of the
claims remaining in the application.
Appellants' invention pertains to a method of welding two
double containment pipe sections together to form a double
containment pipe fitting and to a method of forming an angled,
butt welded joint thermoplastic coaxial pipe sections. A basic
understanding of the invention can be derived from a reading of
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