US3050424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproof sheet
Assignee: Thilmany Pulp and Paper Co
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Filing: 1957-11-08
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Granted: 1962-08-21
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Expires: 1977-11-08
Abstract
No abstract record available.
Inventors
- 👤 Milton G Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:30
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/10; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24909; Y10T428/27; Y10T428/273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A MINERAL WOOL BATT COMPRISING A MAT OF MINERAL FIBERS, A PAPER BACKING SHEET OF SUFFICIENT STRENGTH TO SUPPORT SAID MAT WHEN ADHESIVELY UNITED THERETO, A COATING OF ASPHALT ON SAID BACKING SHEET IN AMOUNT AT LEAST APPROXIMATELY 5 POUNDS PER 1000 SQUARE FEET OF BACKING, SAID COATING SERVING TO ADHESIVELY UNITE SAID BACKING SHEET OF SAID MAT, AND ONLY PARTIALLY EMBEDDED IN THE SURFACE OF SAID ASPHALT ADJACENT SAID MAT, AT LEAST 3 POUNDS PER 1000 SQUARE FEET OF COATED SHEET OF AMMONIUM SULFATE, PARTICLES DISPERED SO THAT PORTIONS OF THE ASPHALT ARE LEFT EXPOSED FOR SAID ADHESIVE UNION, PORTIONS OF THE PARTICLES BEING UNCOATED WITH ASPHALT AND PROTRUDING FROM THE SURFACE OF THE ASPHALT.
Claim 2
Dependent Claim
116 words
A MINERAL WOOL BATT COMPRISING A MAT OF MINERAL FIBERS, A PAPER BACKING SHEET OF SUFFICIENT STRENGTH TO SUPPORT SAID MAT WHEN ADHESIVELY UNITED THERETO, A COATING OF ASPHALT ON SAID BACKING SHEET IN AMOUNT AT LEAST APPROXIMATELY 5 POUNDS PER 1000 SQUARE FEET OF BACKING, SAID COATING SERVING TO ADHESIVELY UNITE SAID BACKING SHEET OF SAID MAT, AND ONLY PARTIALLY EMBEDDED IN THE SURFACE OF SAID ASPHALT ADJACENT SAID MAT, AT LEAST 3 POUNDS PER 1000 SQUARE FEET OF COATED SHEET OF AMMONIUM SULFATE, PARTICLES DISPERED SO THAT PORTIONS OF THE ASPHALT ARE LEFT EXPOSED FOR SAID ADHESIVE UNION, PORTIONS OF THE PARTICLES BEING UNCOATED WITH ASPHALT AND PROTRUDING FROM THE SURFACE OF THE ASPHALT.
References Cited (Backward Citations)
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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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |