Polymeric web exhibiting a soft and silky tactile impression

Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...

Reexamination Certificate

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Details

C604S370000, C604S380000, C604S383000, C428S131000, C428S134000, C428S136000, C428S138000, C428S170000, C428S171000

Reexamination Certificate

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07402723

ABSTRACT:
A polymeric web exhibiting a soft and silky tactile impression on at least one side thereof is disclosed. The silky feeling side of the web exhibits a pattern of discrete hair-like fibrils, each of the hair-like fibrils being a protruded extension of the web surface and having a side wall defining an open proximal portion and a closed distal portion. The hair-like fibrils exhibit a maximum lateral cross-sectional diameter of between 2 and 5 mils, and an aspect ratio from 1 to 3. Methods and apparatus for making the polymeric web utilize a three-dimensional forming structure having a plurality of protrusions being generally columnar forms having an average aspect ratio of at least about 1.

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Decision on Appeal Before the Board of Patent Appeals and Interferences, Ex parte Brian Francis Gray and Keith Joseph Stone, Appeal 2007-2198; U.S. Appl. No. 10/324,181, Technology Center 1700, Decided: Sep. 20, 2007.

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