Bituminous roof covering material
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 19, 1991
Grant Date -
N/A
app pub date -
May 30, 1989
filing date -
Jul 12, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bituminous roof covering material, particularly suitable for use as first layer in a multilayer roof covering system which is applied while adding heat. The material comprises a carrier provided on both sides with a bituminous layer and with a layer formed by a perforated metal foil. According to the invention, the carrier and the bituminous layers applied thereto on both sides are closed layers without perforations, and the bituminous layer interposed between the perforated layer and the carrier consists of adhesion-active bituminous material.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully