Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Reexamination Certificate
2008-12-02
2010-11-02
Sample, David R (Department: 1783)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
C428S158000, C428S170000, C428S172000, C428S304400
Reexamination Certificate
active
07824756
ABSTRACT:
Prepare an oriented polymer composition that is cavitated, has cross sectional dimensions all at least three millimeters and at least one de-oriented surface layer having a thickness of at least 80 microns and at least 50 microns less than half the thickness of the oriented polymer composition, the de-oriented surface layer having a lower degree of polymer orientation than a 100 micron thick portion of the oriented polymer composition adjacent to and below the de-oriented surface layer by sufficiently heat treating a surface of a cavitated oriented polymer composition.
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U.S. Appl. No. 12/327,122, Bruce A. Malone, et al., filed Dec. 3, 2008, not published yet.
PCT/US2008/085210 WO/ISA Search Report and Written Opinion, Jan. 2010.
PCT/US2008/085210 Claims, Jan. 2010.
Birchmeier Brett M.
Kirch Timothy O.
Nichols Kevin L.
O'Brien James J.
Dickinson Wright PLLC
Dow Global Technologies Inc.
Sample David R
Simone Catherine
Stearns Robert L.
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