Pitch based carbon fibers
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United States of America Patent
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Oct 16, 2001
Grant Date -
N/A
app pub date -
Mar 18, 1999
filing date -
Nov 10, 1998
priority date (Note) -
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Abstract
Pitch based carbon fiber wherein the spread La of graphite crystallites constituting a fiber in the direction of layer plane is 1000 angstroms or less; the orientation angle .PSI. in the direction of fiber axis is 10.degree. or less, and the following relationship formulas (1) and (2) are satisfied: 0.70La-46.PSI.>50 (1) 0.55La-76.PSI.<500 (2).
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