Appeal No. 97-0576
Application No. 08/308,876
means for heating the thermoplastic material to a
desired temperature as it is blended and advanced along the
material flow path.
The references of record relied upon by the examiner in
rejections of the claims under 35 U.S.C. § 103 are:
Geier et al. (Geier) 3,023,455 Mar. 6, 1962
Schuur 3,224,739 Dec. 21, 1965
Skidmore 3,738,409 Jun. 12, 1973
Gerhards 3,884,607 May 20, 1975
Kertok 4,502,858 Mar. 5, 1985
Loomans 4,752,135 Jun. 21, 1988
Zahradnik 4,913,641 Apr. 3, 1990
Brydson et al.(Brydson), "Principles of PLASTICS EXTRUSION,"
Applied Science Publishers LTD, London, pp. 95-105 (1973).
Griff, "Plastics Extrusion Technology," 2nd ed., Robert E.
Krieger Publishing Co., New York, pp. 10-11 (1976).
Claims 3, 5, 6, 8 and 9 stand rejected under 35 U.S.C.
§ 103 as being unpatentable over Zahradnik in view of Loomans,
any one of Schuur, Geier and Skidmore, and either Brydson or
Griff.
Claim 10 stands rejected under 35 U.S.C. § 103 as being
unpatentable over Zahradnik in view of Loomans, any one of
Schuur, Geier and Skidmore, either Brydson or Griff, and Kertok.
Claim 7 stands rejected under 35 U.S.C. § 103 as being
unpatentable over Zahradnik in view of Loomans, any one of
Schuur, Geier and Skidmore, either Brydson or Griff, and
Gerhards.
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