Patent US3183996A successfully refreshed from Google Patents.
US3183996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical structural panel
Assignee: Michigan Avenue National Bank of Chicago
•
Filing: 1959-09-04
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Granted: 1965-05-18
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Expires: 1979-09-04
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Capaul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:34
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04; E04B9/045; E04B1/00; E04B1/62; E04B1/74; E04B1/88; E04B1/90; E04B1/82; E04B1/84; E04B2001/8457; E04B2001/8461; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099; Y10T428/24802; Y10T428/24934; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A UNITARY STRUCTURAL PANEL HAVING RIGIDITY TO BE EDGE SUPPORTED, SAID PANEL COMPRISING A RELATIVELY THICK CORE OF MINERAL WOOL AND BINDER MEANS THEREOF FORMING A FLAT SEMIRIGID PANEL HAVING FRONT AND BACK SURFACES, A RELATIVELY THIN GLASS FIBER MAT BONDED TO THE ENTIRE FRONT SURFACE OF SAID PANEL AND INCLUDING BONDED, INTERLOCKED STRANDS OF GLASS FIBERS FOR IMPARTING STRUCTURAL RIGIDITY TO SAID SEMIRIGID PANEL, AND A FLEXIBLE BACKING SHEET BONDED ONLY ALONG DISCRETE AREAS TO THE BACK SURFACE OF SAID PANEL TO INHIBIT AIR PASSAGE AND THERMAL TRANSFER THROUGH SAID PANEL AND TO ABSORB AND REFLECT SOUND ENERGY TRAVERSING THROUGH SAID PANEL.
Claim 2
Dependent Claim
103 words
A UNITARY STRUCTURAL PANEL HAVING RIGIDITY TO BE EDGE SUPPORTED, SAID PANEL COMPRISING A RELATIVELY THICK CORE OF MINERAL WOOL AND BINDER MEANS THEREOF FORMING A FLAT SEMIRIGID PANEL HAVING FRONT AND BACK SURFACES, A RELATIVELY THIN GLASS FIBER MAT BONDED TO THE ENTIRE FRONT SURFACE OF SAID PANEL AND INCLUDING BONDED, INTERLOCKED STRANDS OF GLASS FIBERS FOR IMPARTING STRUCTURAL RIGIDITY TO SAID SEMIRIGID PANEL, AND A FLEXIBLE BACKING SHEET BONDED ONLY ALONG DISCRETE AREAS TO THE BACK SURFACE OF SAID PANEL TO INHIBIT AIR PASSAGE AND THERMAL TRANSFER THROUGH SAID PANEL AND TO ABSORB AND REFLECT SOUND ENERGY TRAVERSING THROUGH SAID PANEL.
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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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |