Soundproofing and thermally insulating structural element

Details Soundproofing and thermally insulating structural element Soundproofing and thermally insulating structural element

2007-02-20

2007-02-20

Cooney, Jr., John M. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C428S423100, C428S425600, C428S425800, C521S170000

Reexamination Certificate

active

10796439

ABSTRACT:
A structural element of closed-cell polyurethane rigid foam, with good thermal insulation and improved sound absorption is achieved by means of surface depressions satisfying specified criteria.

REFERENCES:
patent: 4073991 (1978-02-01), Focht
patent: 5563180 (1996-10-01), Skowronski et al.
patent: 5770635 (1998-06-01), Lee et al.
patent: 6033756 (2000-03-01), Handscomb
patent: 6075064 (2000-06-01), Muller et al.
patent: 2002/0179367 (2002-12-01), Becker et al.
patent: 99/44816 (1999-09-01), None
patent: 02/083461 (2002-10-01), None

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