Patent US3479201A successfully refreshed from Google Patents.
US3479201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color-coated roofing granules
Assignee: 3M Co
•
Filing: 1966-01-18
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Granted: 1969-11-18
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Expires: 1986-01-18
Abstract
No abstract record available.
Inventors
- 👤 Robert J Sloan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:35
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/52; C04B41/50; C04B41/5076; C04B41/5089; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438; Y10T428/24388; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1766815A
Cited
US2033656A
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US2054317A
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US2070359A
Cited
US2061338A
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US2163678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |