Appeal No. 2006-1166
Application No. 09/994,257
THE INVENTION
The appellants claim a method of making a Coriolis flowmeter
for measuring the flow of a material having an ultra high level
of purity, such as a material used in the fabrication of
semiconductors. Claim 1 is illustrative:
1. A method of manufacturing a Coriolis flowmeter
adapted to extend a received process material flow
having an ulta high level of purity free from
contamination due to ion transfer from said Coriolis
flow meter to said process material; said method
comprising the steps of coupling a flow tube means to a
base, wherein said flow tube means is formed entirely
from PTFE (polytetrafluoroethylene) or PFA
(polyfluoroalkoxy copolymer);
affixing a driver to said flow tube means;
coupling a pick-off means to said flow tube means;
and
affixing inlet and outlet ends of said flow tube
means to at least one process connection.1
THE REFERENCES
Sipin 4,559,833 Dec. 24, 1985
Van der Pol 5,918,285 Jun. 29, 1999
Bitto et al. 6,711,958 Mar. 30, 2004
(Bitto) (filed Apr. 11, 2001)
1In the event of further prosecution, the examiner and the
appellants should address on the record whether the appellants’
originally filed disclosure provides adequate written descriptive
support under 35 U.S.C. § 112, first paragraph, for “PTFE” in claims
1, 50 and 51, and indicates, in accord with 35 U.S.C. § 112, second
paragraph, that the recited flow tube and process connections made of
PTFE are part of what the appellants regard as their invention
2
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