Plastic and nonmetallic article shaping or treating: processes – Laser ablative shaping or piercing
Reexamination Certificate
2009-06-04
2010-06-15
Daniels, Matthew J. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Laser ablative shaping or piercing
C216S094000, C623S023740, C264S446000, C264S482000
Reexamination Certificate
active
07736576
ABSTRACT:
Improved processes for surface treating expanded polytetrafluoroethylene (PTFE) is disclosed and improved surface-treated devices made from the processes. The processes employ a laser to surface-modify an expanded PTFE structure to create a macro-roughened surface that has the capability to remain microporous throughout. The unique process of the present invention creates a ridge and valley structure on the surfaces of devices that includes unique gnarled nodes along valley floors.
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Daniels Matthew J.
Gore Enterprise Holdings Inc.
Johns David J.
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