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US 6,051,193 AGranted
Multilayer intumescent sheet
Assignee3M Innovative Properties Company
InventorsRoger L. Langer, Stephen M. Sanocki, Gary F. Howorth
Life of this patent
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Assignee3M Innovative Properties Company
InventorsRoger L. Langer, Stephen M. Sanocki, Gary F. Howorth
Estimating the term…
The invention provides a multilayer intumescent mat or sheet that is useful as a mounting for a pollution control device or as a firestop. In one aspect, the multilayer intumescent sheet of the invention includes a non-moldable flexible non-intumescent layer and a non-moldable flexible intumescent layer including an intumescent material wherein the layers form a single sheet without the use of auxiliary bonding means. In another aspect, the multilayer intumescent sheet of the invention includes a first non-moldable intumescent layer including a first intumescent material and a second non-moldable intumescent layer comprising a second intumescent material, the first and second intumescent materials being different, wherein the layers form a single sheet without the use of auxiliary bonding means. The invention also provides a pollution control device including a multilayer sheet of the invention disposed between a monolith and a housing.
A pollution control device comprising:
A pollution control device comprising:
A pollution control device comprising:
A pollution control device comprising:
A pollution control device comprising:
A pollution control device comprising:
A pollution control device comprising:
A firestop comprising:
Dependencies are inferred from the claim text.