US3369956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant building covering composition
Assignee: United States Gypsum Co
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Filing: 1962-11-08
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Granted: 1968-02-20
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Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 Clyde C Schuetz
- 👤 Richard Ericson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:47
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/10; B; B29; B29C; B29C70/00; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T442/00; Y10T442/50; Y10T442/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PREPARED ROOFING OF IMPROVED FIRE RESISTANCE COMPRISING A ROOFING BASE, A PREPARED-ROOFING COATING ASPHALT LAYER DISPOSED ON SAID BASE, A PREFORMED OPEN INTEGRAL MAT OF GLASS FIBERS OF SUBSTANTIALLY UNIFORM DIAMETER EMBEDDED IN SAID COATING ASPHALT LAYER; SAID FIBERS COMPRISING AT LEAST ABOUT 1 PERCENT BY WEIGHT OF SAID COATING ASPHALT LAYER; MINERAL ROOFING GRANULES EMBEDDED IN THE UPPER SURFACE OF SAID PREPARED ROOFING SO AS TO PROVIDE A SUBSTANTIALLY CONTINUOUS ROOFING COVERING; SAID GRANULES COMPRISING ABOUT 18 TO 45 PERCENT BY WEIGHT OF SAID ROOFING AND HAVING A PARTICLE SIZE OF BETWEEN ABOUT .01 TO .13 INCH; THE COATING ASPHALT BEING PRESENT IN QUANTITY SUFFICIENT TO COMPLETELY ENVELOP SAID GLASS MAT AND HAVE EACH OF SAID ROOFING GRANULES ADHERED THERETO.
Claim 2
Dependent Claim
122 words
A PREPARED ROOFING OF IMPROVED FIRE RESISTANCE COMPRISING A ROOFING BASE, A PREPARED-ROOFING COATING ASPHALT LAYER DISPOSED ON SAID BASE, A PREFORMED OPEN INTEGRAL MAT OF GLASS FIBERS OF SUBSTANTIALLY UNIFORM DIAMETER EMBEDDED IN SAID COATING ASPHALT LAYER; SAID FIBERS COMPRISING AT LEAST ABOUT 1 PERCENT BY WEIGHT OF SAID COATING ASPHALT LAYER; MINERAL ROOFING GRANULES EMBEDDED IN THE UPPER SURFACE OF SAID PREPARED ROOFING SO AS TO PROVIDE A SUBSTANTIALLY CONTINUOUS ROOFING COVERING; SAID GRANULES COMPRISING ABOUT 18 TO 45 PERCENT BY WEIGHT OF SAID ROOFING AND HAVING A PARTICLE SIZE OF BETWEEN ABOUT .01 TO .13 INCH; THE COATING ASPHALT BEING PRESENT IN QUANTITY SUFFICIENT TO COMPLETELY ENVELOP SAID GLASS MAT AND HAVE EACH OF SAID ROOFING GRANULES ADHERED THERETO.
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |