Compositions – Electrically conductive or emissive compositions – Elemental carbon containing
Reexamination Certificate
2005-06-21
2005-06-21
Thexton, Matthew A. (Department: 1714)
Compositions
Electrically conductive or emissive compositions
Elemental carbon containing
C525S053000, C525S391000, C525S397000, C366S081000, C523S348000
Reexamination Certificate
active
06908573
ABSTRACT:
A screw for a multiple screw extruder comprises at least two conveying sections for transporting a composition comprising a polymeric resin from the feed end to the discharge end of the extruder; and at least two mixing sections comprising screw elements having two flights, wherein the ratio of the length to diameter ratio of the sum of the mixing sections to the length to diameter ratio of the screw is about 0.17 to about 0.5 and wherein the conveying sections are separated by at least one mixing section.
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General Electric
Thexton Matthew A.
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