US3476577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifoulant composition and method
Assignee: United States Steel Corp
•
Filing: 1967-03-22
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Granted: 1969-11-04
•
Expires: 1987-03-22
Abstract
No abstract record available.
Inventors
- 👤 William R Davie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:04
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C3/145; C03C3/04; C03C3/062; C03C3/064; C03C4/00; C03C4/0035; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/25; Y10T428/252; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1138928A
Cited
US2439441A
Cited
US2583545A
Cited
US2798816A
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US3408213A
Cited
US3420684A
Cited
US3404015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |