US Patent 7452573 Method of making a barrier material

Patent 7452573 was granted and assigned to Weyerhaeuser on November, 2008 by the United States Patent and Trademark Office.

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Patent Citations Received

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US Patent 12115761 Coffee stain-resistant cellulosic structures and associated containers and methods

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Patent Inventor Names

Amar N. Neogi0

David E. Fish0

Dwayne M. Shearer0

Michael J. Dougherty0

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Patent abstract

The barrier properties of a water soluble gas barrier material are improved if the material is blended with a nanoparticle calcium carbonate having a size of from 10 to 250 nanometers. The barrier material is on a substrate to provide a substrate with gas barrier properties. A layer of heat sealable material may be applied to the exposed surface of the barrier material. A method for making the barrier coated substrate is disclosed.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=074525730

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