Patent US2804833A successfully refreshed from Google Patents.
US2804833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt roofing
Assignee: Patent and Licensing Corp
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Filing: 1956-07-02
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Granted: 1957-09-03
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Expires: 1976-07-02
Abstract
No abstract record available.
Inventors
- 👤 Berry G William
- 👤 John C Schmitt
- 👤 Joseph F Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:13
CPC Classifications
D; D06; D06N; D06N5/00; D21; D21J; D21J1/00; D21J1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/2115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN IMPROVED MINERAL SURFACED ASPHALT ROOFING COMPRISING ROOFING FELT SATURATED WITH SATURATING ASPHALT, A LAYER OF COATING ASPHALT ON ONE SIDE THEREOF, AND ROOFING GRANULES IMPRESSED IN THE COATING ASPHALT WHEREIN THE SATURATING ASPHALT IS THE AIRBLOWN PRODUCT OF AN ASPHALT FLUX TO WHICH MINERAL OIL HAS BEEN ADDED IN AN AMOUNT SUFFICIENT TO OBTAIN A MODIFIED KLEINSCHIMIDT PERCENTAGE OF WATER WHITE OIL IN THE RANGE 15-20%.
Claim 2
Dependent Claim
67 words
AN IMPROVED MINERAL SURFACED ASPHALT ROOFING COMPRISING ROOFING FELT SATURATED WITH SATURATING ASPHALT, A LAYER OF COATING ASPHALT ON ONE SIDE THEREOF, AND ROOFING GRANULES IMPRESSED IN THE COATING ASPHALT WHEREIN THE SATURATING ASPHALT IS THE AIRBLOWN PRODUCT OF AN ASPHALT FLUX TO WHICH MINERAL OIL HAS BEEN ADDED IN AN AMOUNT SUFFICIENT TO OBTAIN A MODIFIED KLEINSCHIMIDT PERCENTAGE OF WATER WHITE OIL IN THE RANGE 15-20%.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |