US3332830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic weathering sheet including continuous glass fibers
Assignee: Owens Corning
•
Filing: 1963-04-29
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Granted: 1967-07-25
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 James A Tomlinson
- 👤 Jean A Berg
- 👤 John G Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:47
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/02; B; B32; B32B; B32B11/00; B32B11/10; C; C08; C08L; C08L95/00; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D06; D06N; D06N5/00; D21; D21J; D21J1/00; E04D1/00; E04D1/26; E04D2001/005; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24752; Y10T428/2476
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
A ROOFING SHEET COMPRISING A WEATHERING GRADE ASPHALT EXTENDING THROUGHOUT THE THICKNESS OF SAID SHEET, AND A COEXTENSIVE INTEGRATED POROUS MAT OF MINERAL FIBERS FULLY IMPREGNATED BY AND ENCLOSED WITHIN SAID ASPHALT, SAID ASPHALT BEING A FLAME EXTINGUISHING ASPHALT AND AT LEAST ONE EDGE ZONE OF SAID SHEET CONTAINING MINERAL REINFORCING FIBERS RANDOMLY ARRANGED IN GREATER CONCENTRATION THAN THE GENERAL CONCENTRATION OF FIBERS IN SAID SHEET.
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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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |