Patent US4136223A successfully refreshed from Google Patents.
US4136223A
Expired / Lapsed
US
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Plate-shaped roofing element
Assignee: Hotaco As
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Filing: 1978-04-04
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Granted: 1979-01-23
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Expires: 1998-04-04
Abstract
Abstract Plate-shaped roofing element comprising: adhesive foam plastic having a surface facing upwards in a mounted position and having a covering plate comprised of bituminous roofing felt with surface facing the element being covered with a layer of gravel or pebbles, and a layer of glass fiber contacting said surface of said roofing felt and having through holes through which the adhesive foam plastic during foaming becomes adherent to said bituminous roofing felt.
Inventors
- 👤 Sven Harder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:45
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; E; E04; E04D; E04D3/00; E04D3/35; E04D3/351; E04D3/352; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249982; Y10T428/249984
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
Plate-shaped roofing element comprising: adhesive foam plastic having a surface facing upwards in a mounted position and having a covering plate comprised of bituminous roofing felt with surface facing the element being covered with a layer of gravel or pebbles, and a layer of glass fiber contacting said surface of said roofing felt and having through holes through which the adhesive foam plastic during foaming becomes adherent to said bituminous roofing felt.
Claim 2
Dependent Claim
72 words
Plate-shaped roofing element comprising: adhesive foam plastic having a surface facing upwards in a mounted position and having a covering plate comprised of bituminous roofing felt with surface facing the element being covered with a layer of gravel or pebbles, and a layer of glass fiber contacting said surface of said roofing felt and having through holes through which the adhesive foam plastic during foaming becomes adherent to said bituminous roofing felt.
References Cited (Backward Citations)
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Cited
US3365322A
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US3492196A
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US3874980A
Cited
US3867494A
Cited
US4072788A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |