US4473606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foils
Assignee: LUMARA FOODS OF AMERICA Inc
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Filing: 1982-09-21
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Granted: 1984-09-25
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Expires: 2002-09-21
Abstract
Abstract An anticorrosion perforated foil for fusion onto metal substrates comprising 60 to 90% by weight of bitumen, 0.5 to 7% by weight of styrene-butadiene rubber, 5 to 25% by weight of a bitumen modified with polymers, 0.5 to 7.5% by weight of natural resin and 0.5 to 10% by weight of organic and/or inorganic fibers stable at above 160° C. and its preparation and a method of protecting metal elements from corrosion.
Inventors
- 👤 Karl Ruhl
- 👤 Karlheinz Bildner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:58
CPC Classifications
C; C08; C08L; C08L95/00; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/141; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/31504; Y10T428/31815; Y10T428/31844; Y10T428/31855; Y10T428/31931
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
An anticorrosion perforated foil comprising a mixture of 60 to 90% by weight of bitumen, 0.5 to 7% by weight of styrene-butandiene rubber, 5 to 25% by weight of a bitumen modified with polymers, 0.5 to 7.5% by weight of natural resin and 0.5 to 10% by weight of fibers which are stable at 160° C., said fibers being selected form the group consisting of organic fibers, inorganic fibers and mixtures thereof.
Claim 2
Dependent Claim
72 words
An anticorrosion perforated foil comprising a mixture of 60 to 90% by weight of bitumen, 0.5 to 7% by weight of styrene-butandiene rubber, 5 to 25% by weight of a bitumen modified with polymers, 0.5 to 7.5% by weight of natural resin and 0.5 to 10% by weight of fibers which are stable at 160° C., said fibers being selected form the group consisting of organic fibers, inorganic fibers and mixtures thereof.
Claim 3
Dependent Claim
22 words
The foil of claim 1 wherein the perforations have diameters of 1 to 1.5 mm at intervals of 5 to 100 mm.
Claim 4
Dependent Claim
24 words
The foil of claim 1 or 2 wherein its density is 1000 to 1100 kg/m 3 and its thickness is 0.8 to 1.5 mm.
Claim 5
Dependent Claim
14 words
The foil of claim 2 wherein the perforations have diameters of about 1.2 mm.
Claim 6
Dependent Claim
15 words
The foil of claim 1 or 2 having on one side thereof a separating layer.
References Cited (Backward Citations)
US4282127A
Cited
GB2041951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |