US3712832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof structure
Assignee: Owens Corning
•
Filing: 1970-08-20
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Granted: 1973-01-23
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Expires: 1990-08-20
Abstract
Abstract AN INSULATED ROOF COMPRISING A STRUCTURAL SURFACE MEMBER WITH A VAPOR BARRIER ADHERED THERETO, COMPRISING ASPHALT SANDWICHED BETWEEN TWO PIECES OF PAPER, AND THERMAL INSULATION ADHERED TO SAID VAPOR BARRIER OVER WHICH IS APPLIED A WATERPROOF COVERING. ALSO, A METHOD OF CONSTRUCTING A ROOF STRUCTURE OF THE FOREGOING TYPE BY MEANS OF COLD ADHESIVE WITH A FUGITIVE SOLVENT FOR ADHERING THE VAPOR BARRIER TO THE STRUCTURAL MEMBER, AND A HOT BITUMINOUS ADHESIVE OVER SAID VAPOR BARRIER FOR VOLTILIZING THE FUGITIVE SOLVENT.
Inventors
- 👤 S Stapleford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:57
CPC Classifications
E; E04; E04D; E04D11/00; E04D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |