US3313073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint assemblies for insulation panels
Assignee: Foam Products Corp
•
Filing: 1962-09-24
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Granted: 1967-04-11
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Howard G Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:27
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/12; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; F16L59/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
AN INSULATION PANEL COMPRISING A RIGID POLYURETHANE FOAM CORE, A PAIR OF COVERS SUBSTANTIALLY ENCLOSING SAID CORE, SAID CORE HAVING AN EDGE EXTENDING OUTWARDLY SLIGHTLY BEYOND SAID COVERS, A REINFORCING CHANNEL MEMBER HAVING A WEB PORTION POSITIONED AGAINST SAID EDGE OF SAID CORE AND HAVING FLANGE PORTIONS EXTENDING INWARDLY FROM SAID EDGE, SAID REINFORCING CHANNEL MEMBER INCLUDING AN ESSENTIALLY U-SHAPED FIBRE-GLASS MEMBER AND STEEL REINFORCING STRIPS POSITIONED AT THE FACING SURFACES OF SAID FLANGE PORTIONS OF SAID CHANNEL MEMBER, AND SAID COVERS AT THE OPPOSITE EDGE OF SAID PANEL PROJECTING OUTWARDLY BEYOND SAID CORE BY A DISTANCE ESSENTIALLY CORRESPONDING TO THE PROJECTION OF SAID EDGE OF SAID CORE PLUS THE THICKNESS OF SAID WEB PORTION.
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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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |