Patent US2640786A successfully refreshed from Google Patents.
US2640786A
Expired / Lapsed
US
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Coating composition and fire resistant building element coated therewith
Assignee: United States Gypsum Co
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Filing: 1948-07-08
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Granted: 1953-06-02
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Expires: 1968-07-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Parsons
- 👤 Morton C Higgs
- 👤 Mary A Loos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:46
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A COATING COMPOSITION APPLICABLE TO INHERENTLY COMBUSTIBLE BASE-SHEET MATERIAL TO FORM THEREWITH A RELATIVELY FIRE-RESISTANT BUILDINGCOVERING MATERIAL COMPRISING A FILLED THERMOPLASTIC BITUMINOUS BINDER CONTAINING FROM ABOUT 30% TO ABOUT 70% BY WEIGHT OF ASPHALT, FROM ABOUT 10% TO ABOUT 25% BY WEIGHT OF SMALL TIGHTLY ROLLED UP MINERAL WOOL MASSES HAVING A DIAMETER SUCH THAT THEY WILL PASS THROUGH A 3-MESH SCREEN BUT BE RETAINED ON A 20-MESH SCREEN, AND ENOUGH OF AN INORGANIC FILLER FROM THE GROUP CONSISTING OF GROUND MINERALS AND ASBESTOS TO MAKE 100% BY WEIGHT.
Claim 2
Dependent Claim
89 words
A COATING COMPOSITION APPLICABLE TO INHERENTLY COMBUSTIBLE BASE-SHEET MATERIAL TO FORM THEREWITH A RELATIVELY FIRE-RESISTANT BUILDINGCOVERING MATERIAL COMPRISING A FILLED THERMOPLASTIC BITUMINOUS BINDER CONTAINING FROM ABOUT 30% TO ABOUT 70% BY WEIGHT OF ASPHALT, FROM ABOUT 10% TO ABOUT 25% BY WEIGHT OF SMALL TIGHTLY ROLLED UP MINERAL WOOL MASSES HAVING A DIAMETER SUCH THAT THEY WILL PASS THROUGH A 3-MESH SCREEN BUT BE RETAINED ON A 20-MESH SCREEN, AND ENOUGH OF AN INORGANIC FILLER FROM THE GROUP CONSISTING OF GROUND MINERALS AND ASBESTOS TO MAKE 100% BY WEIGHT.
Claim 3
Dependent Claim
20 words
A BUILDING ELEMENT HAVING AND FIRERESISTANT QUALITIES, COMPRISING AN INHERENTLY COMBUSTIBLE BASE-SHEET MATERIAL COATED WITH THE COMPOSITION OF CLAIM 1.
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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) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |