US2568849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor barrier paper and the manufacture thereof
Assignee: Philip Carey Manufacturing Co
•
Filing: 1947-05-14
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Granted: 1951-09-25
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Expires: 1967-05-14
Abstract
No abstract record available.
Inventors
- 👤 Fasold George Arthur
- 👤 Healthy Mount
- 👤 Howard E Callahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:38
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; D21H19/00; D21H19/10; D21H5/00; D21H5/0002; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31551; Y10T428/31634; Y10T428/31815; Y10T428/31819; Y10T428/31823
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A FIRE RESISTIVE VAPOR BARRIER PAPWER WHICH COMPRISES A FLEXIBLE PAPER SHEET COATING ON AT LEAST ONE SURFACE THEREOF WITH A COATING HAVING A BASE WHICH CONSISTS OF BITUMEN AND WATER-SOLUTION ALKALI METAL SILICATE AND WHICH CONSTITUTES FROM ABOUT 70% TO ABOUT 95% BY DRY WEIGHT OF SAID COATING, SAID BASE CONATINING FROM ABOUT 30% TO ABOUT 60% BY DRY WEIGHT OF BITUMEN HAVING A SOFTENING POINT OF THE RANGE 100* F. TO 160* F. AND CONTAINING FROM ABOUT 40% TO ABOUT 70% BY DRY WEIGHT OF ALKALI METAL SILICATE HAVING A RATIO OF SIO2 TO ALKALI METAL OXIDE OF ABOUT 1.6:1 TO ABOUT 4:1, AND SAID COATING CONTAINING FROM ABOUT 5% TO ABOUT 30% BY DRY WEIGHT OF HUMECTANT SELECTED FROM THE GROUP CONSISTING OF GLYCERINE, ETHYLENE GLYCOL, PROPLYLENE GLYCOL AND SORBITOL.
Claim 2
Dependent Claim
133 words
A FIRE RESISTIVE VAPOR BARRIER PAPWER WHICH COMPRISES A FLEXIBLE PAPER SHEET COATING ON AT LEAST ONE SURFACE THEREOF WITH A COATING HAVING A BASE WHICH CONSISTS OF BITUMEN AND WATER-SOLUTION ALKALI METAL SILICATE AND WHICH CONSTITUTES FROM ABOUT 70% TO ABOUT 95% BY DRY WEIGHT OF SAID COATING, SAID BASE CONATINING FROM ABOUT 30% TO ABOUT 60% BY DRY WEIGHT OF BITUMEN HAVING A SOFTENING POINT OF THE RANGE 100* F. TO 160* F. AND CONTAINING FROM ABOUT 40% TO ABOUT 70% BY DRY WEIGHT OF ALKALI METAL SILICATE HAVING A RATIO OF SIO2 TO ALKALI METAL OXIDE OF ABOUT 1.6:1 TO ABOUT 4:1, AND SAID COATING CONTAINING FROM ABOUT 5% TO ABOUT 30% BY DRY WEIGHT OF HUMECTANT SELECTED FROM THE GROUP CONSISTING OF GLYCERINE, ETHYLENE GLYCOL, PROPLYLENE GLYCOL AND SORBITOL.
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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) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |