Patent US5462555A successfully refreshed from Google Patents.
US3013893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-stain resistant granules and products employing the same
Assignee: 3M Co
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Filing: 1960-02-08
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Granted: 1961-12-19
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Expires: 1980-02-08
Abstract
No abstract record available.
Inventors
- 👤 Maynard H Olson
- 👤 Donald E Lovness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:46
CPC Classifications
E; E04; E04D; E04D7/00; E04D7/005; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A COMPOSITE SHEET BODY FOR ROOFING AND SIDING COMPRISING A BITUMINOUS SHEET PRODUCT AND A FIRMLY ADHERENT SURFACING FOR THE SAME CONSISTING ESSENTIALLY OF OIL-STAIN RESISTANT GRANULES, SAID GRANULES COMPRISING A MINERAL GRANULE HAVING A STABLE MINUTE WATER-INSOLUBLE COATING FORMED FROM AN OLEOPHOBIC FLUOROCARBON SIZING AGENT.
Claim 2
Dependent Claim
46 words
A COMPOSITE SHEET BODY FOR ROOFING AND SIDING COMPRISING A BITUMINOUS SHEET PRODUCT AND A FIRMLY ADHERENT SURFACING FOR THE SAME CONSISTING ESSENTIALLY OF OIL-STAIN RESISTANT GRANULES, SAID GRANULES COMPRISING A MINERAL GRANULE HAVING A STABLE MINUTE WATER-INSOLUBLE COATING FORMED FROM AN OLEOPHOBIC FLUOROCARBON SIZING AGENT.
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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) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |