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Minnesota Diversified Products, Inc. Patents |
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Assignee: Minnesota Diversified Products, Inc.
Address: New Brighton, MN
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4530193 |
Built-up roof structure and method of preparing roof structure |
July 23, 1985 |
| A built-up roof structure includes an insulating layer of expanded, foamed, closed cell, polystyrene insulation panels covering an entire roof. A water impermeable membrane is laid loosely over all of the insulation panels, and a protective layer of extruded, foamed, closed cell, pol |
| 4406095 |
Attic insulation vent |
September 27, 1983 |
| In a house structure in which insulated material is placed between and over attic floor joists, an insulation vent provides an air channel to allow free flow of ventilating air along the underside of roof sheathing between the exterior soffit and the interior of the attic above the insul |
| 4326909 |
Method and apparatus for forming a permeable insulation board for building construction |
April 27, 1982 |
| An insulation material having relatively high moisture permeability, includes an inner sheet of expanded polystyrene of substantial thickness. Attached to the polystyrene is an impermeable kraft supported aluminum foil outer layer having the paper side facing the polystyrene. An adhesive |
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