1
Robert B Bruce, David M Harriss: Gypsum-based construction material. E I du Pont de Nemours and Company, November 26, 2002: US06485821 (13 worldwide citation)

The present invention relates to a process for manufacturing a gypsum-based substrate. The process includes the steps mixing gypsum and water to produce a gypsum slurry, providing a synthetic polymeric fibrous sheet on one side of a layer of the gypsum slurry, and adhering to the wet gypsum to the s ...


2
David Jackson McGinty, Stasys K Rudys, David M Harriss: Flash-spun sheet material. E I du Pont de Nemours and Company, January 4, 2000: US06010970 (11 worldwide citation)

Improved sheets of bonded plexifilamentary film-fibril strands spun from a polyolefin and a pigment are provided. The polyolefin comprises at least 90% by weight of the fibril strands, and the pigment comprises between 0.05% and 10% by weight of the fibril strands. The sheet has a high opacity and h ...


3
Robert B Bruce, David M Harriss: Fungus resistant gypsum-based substrate. E I du Pont de Nemours and Company, Innogyps, March 9, 2004: US06703331 (8 worldwide citation)

The present invention relates to a fungus resistant gypsum board, made of first and second polymeric fibrous sheets with a gypsum core sandwiched there between. The gypsum core containing less than 0.03% of formulation additives that serve as fungus nutrients and less than 0.5% of the dry gypsum cor ...


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Robert B Bruce, David M Harriss: Fungus resistant gypsum-based substrate. E I Du Pont de Nemours And Company, Legal Patent Records Center, February 27, 2003: US20030037502-A1 (1 worldwide citation)

The present invention relates to a fungus resistant gypsum board, made of first and second polymeric fibrous sheets with a gypsum core sandwiched there between. The gypsum core containing less than 0.03% of formulation additives that serve as fungus nutrients and less than 0.5% of the dry gypsum cor ...


6
Robert B Bruce, David M Harriss: Fungus resistant gypsum-based substrate. E I Du Pont de Nemours And Company, Legal Patent Records Center, May 13, 2004: US20040092190-A1

The present invention relates to a fungus resistant gypsum board, made of first and second polymeric fibrous sheets with a gypsum core sandwiched there between. The gypsum core containing less than 0.03% of formulation additives that serve as fungus nutrients and less than 0.5% of the dry gypsum cor ...