Stock material or miscellaneous articles – Hollow or container type article
Reexamination Certificate
2006-05-16
2006-05-16
Pyon, Harold (Department: 1772)
Stock material or miscellaneous articles
Hollow or container type article
C428S034200, C428S034400, C428S035200, C428S035700, C206S000600, C206S000700, C426S127000, C426S323000, C099S467000, C099S485000, C422S305000, C422S040000, C424S405000, C424S409000, C424S410000, C424S411000, C424S414000, C424S416000
Reexamination Certificate
active
07045182
ABSTRACT:
A sulphur dioxide generator (10) is disclosed which comprises two composite sheets (12, 14). First stage release of sulphur dioxide is from a coating (26) of the composite sheet (14). The coating (26) is between a paper sheet (22) and a weldable coating (24). The coating (26) incorporates a substance which, in the presence of moisture, generates sulphur dioxide. Second stage release is from sulphur dioxide generating powder which is in pockets (30). The composite sheet (12) comprises a paper layer (16) and a weldable layer (18). The layers (24, 18) are sealed together along a series of longitudinal and transverse lines to form the pockets (30).
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Clemes Dennis Charles
Van Der Merwe Pieter Johannes
Van Der Westhuyzen Petrus Johannes
Bruenjes Chris
Connolly Bove & Lodge & Hutz LLP
Grapetek (Proprietary) Limited
Hume Larry J.
Pyon Harold
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