US3516922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting corrosion
Assignee: EIDP Inc
•
Filing: 1966-03-09
•
Granted: 1970-06-23
•
Expires: 1986-03-09
Abstract
No abstract record available.
Inventors
- 👤 Willard F Anzilotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:16
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2756211A
Cited
US2413852A
Cited
US2905541A
Cited
US2889276A
Cited
US3079339A
Cited
US2891909A
Cited
US3088795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |