Patent US3137972A successfully refreshed from Google Patents.
US3137972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing
Assignee: Individual
•
Filing: 1961-03-03
•
Granted: 1964-06-23
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
- 👤 Steven T Ekholm
- 👤 Theodore G Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:48
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/10; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24215; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A ROOF INCLUDING A PLURALITY OF SIMILAR STRIPS OF ROOFING HAVING ADJOINING MARGINAL PORTIONS OVERLAPPED, EACH STRIP INCLUDING A THIN FLEXIBLE BASE WEB AND AN ALUMINUM FOIL SHEET ADHERED TO THE UPPER SURFACE OF THE BASE WEB, SAID FOIL SHEET EXTENDING CONTINUOUSLY FROM ONE MARGINAL EDGE TO THE OTHER MARGINAL EDGE OF SAID BASE WEB, ONE TERMINAL EDGE OF SAID FOIL SHEET BEING SUBSTANTIALLY CONTIGUOUS WITH SAID ONE MARGINAL EDGE OF SAID WEB, THE MARGINAL EDGE PORTION OF SAID SHEET OPPOSITE TO SAID TERMINAL EDGE BEING A RETURN FOLD ENCLOSING THE OTHER MARGINAL EDGE OF SAID WEB AND EXTENDING INWARDLY ALONG THE UNDERSIDE OF SAID BASE WEB, SAID MARGINAL EDGE PORTION OF EACH STRIP OVERLYING A PORTION OF THE SHEET DEFINING SAID ONE TERMINAL EDGE OF AN ADJOINING STRIP, AND A SEALING STRIP OF EPOXY RESIN ADHESIVE SEALING THE OVERLYING SHEET PORTIONS ONE TO THE OTHER.
Claim 2
Dependent Claim
146 words
A ROOF INCLUDING A PLURALITY OF SIMILAR STRIPS OF ROOFING HAVING ADJOINING MARGINAL PORTIONS OVERLAPPED, EACH STRIP INCLUDING A THIN FLEXIBLE BASE WEB AND AN ALUMINUM FOIL SHEET ADHERED TO THE UPPER SURFACE OF THE BASE WEB, SAID FOIL SHEET EXTENDING CONTINUOUSLY FROM ONE MARGINAL EDGE TO THE OTHER MARGINAL EDGE OF SAID BASE WEB, ONE TERMINAL EDGE OF SAID FOIL SHEET BEING SUBSTANTIALLY CONTIGUOUS WITH SAID ONE MARGINAL EDGE OF SAID WEB, THE MARGINAL EDGE PORTION OF SAID SHEET OPPOSITE TO SAID TERMINAL EDGE BEING A RETURN FOLD ENCLOSING THE OTHER MARGINAL EDGE OF SAID WEB AND EXTENDING INWARDLY ALONG THE UNDERSIDE OF SAID BASE WEB, SAID MARGINAL EDGE PORTION OF EACH STRIP OVERLYING A PORTION OF THE SHEET DEFINING SAID ONE TERMINAL EDGE OF AN ADJOINING STRIP, AND A SEALING STRIP OF EPOXY RESIN ADHESIVE SEALING THE OVERLYING SHEET PORTIONS ONE TO THE OTHER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |