Appeal No. 2002-0224
Application 08/628,327
23. A filter media comprising a melt blown electret
polypropylene fiber web having a melt processable silicon-free
nonionic oleophobic fluorochemical additive compound present
within the web at a concentration in the range of about 0.2 to
3.5% by weight to achieve sustained electret filtration
enhancement.
THE REFERENCES
Reed et al. (Reed) 4,874,399 Oct. 17, 1989
Crater et al. (Crater) 5,025,052 Jun. 18, 1991
Maruscak et al. (Maruscak) 5,038,775 Aug. 13, 1991
Murphy 1,337,753 Nov. 21, 1973
(Great Britain patent specification)
Matsuura et al. (Matsuura) 0 488 822 A2 Jun. 3, 1992
(European patent application)
THE REJECTIONS
The claims stand rejected under 35 U.S.C. § 103 as follows:
claim 23 over Matsuura in view of Maruscak alone or further in
view of Murphy or Crater; claims 25-27, 29 and 30 over Matsuura
in view of 1) Maruscak and Reed or 2) Maruscak, Reed and either
Murphy or Crater; claim 24 over Matsuura in view of 1) Maruscak
and Crater or 2) Maruscak, Crater and Murphy; and claim 28 over
Matsuura in view of 1) Maruscak, Reed and Crater or 2) Maruscak,
Reed, Crater and Murphy.
OPINION
We reverse the aforementioned rejections and, under the
provisions of 37 CFR § 1.196(b), enter a new ground of rejection
of claims 23-30. Regarding the reversal we need to address only
2
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