Patent US4845585A successfully refreshed from Google Patents.
Patent US3216888A successfully refreshed from Google Patents.
US3216888A
Expired / Lapsed
US
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Mineral roofing felt with asphalt binder
Assignee: Flintkote Co
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Filing: 1963-04-11
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Granted: 1965-11-09
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Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 Frank G Cacossa
- 👤 Julius Z Hollmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:13
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A ROOFING FELT COMPRISING MINERAL WOOL AS THE MAJOR FIBER CONSTITUENT, A CELLULOSIC FIBER HAVING WEB FORMING PROPERTIES AS THE MINOR FIBER CONSTITUENT, SAID CELLULOSIC FIBER BEING PRESENT IN AN AMOUNT SUFFICIENT TO PERMIT THE FORMATION OF A WEB, AND FRO 25% TO 35% BY WEIGHT OF ASPHALT, SAID ASPHALT CONSTITUENT COMPRISING THE DRIED RESIDUE OF AN ASPHALT EMULSION HAVING A SOFTENING POINT OF FROM 105*F. TO 120*F. AS MEASURED BY THE RING AND BALL ASTM METHOD OF TEST D-36 AND PULVERIZED ASPHALT HAVING A SOFTENING POINT ABOVE 200*F. AS MEASURED BY THE RING AND BALL ASTM METHOF OF TEST D-36 PRESENT IN A RATIO OF FROM 2:1 TO 5:1
Claim 2
Dependent Claim
110 words
A ROOFING FELT COMPRISING MINERAL WOOL AS THE MAJOR FIBER CONSTITUENT, A CELLULOSIC FIBER HAVING WEB FORMING PROPERTIES AS THE MINOR FIBER CONSTITUENT, SAID CELLULOSIC FIBER BEING PRESENT IN AN AMOUNT SUFFICIENT TO PERMIT THE FORMATION OF A WEB, AND FRO 25% TO 35% BY WEIGHT OF ASPHALT, SAID ASPHALT CONSTITUENT COMPRISING THE DRIED RESIDUE OF AN ASPHALT EMULSION HAVING A SOFTENING POINT OF FROM 105*F. TO 120*F. AS MEASURED BY THE RING AND BALL ASTM METHOD OF TEST D-36 AND PULVERIZED ASPHALT HAVING A SOFTENING POINT ABOVE 200*F. AS MEASURED BY THE RING AND BALL ASTM METHOF OF TEST D-36 PRESENT IN A RATIO OF FROM 2:1 TO 5:1
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |