US3445400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromate corrosion inhibiting composition containing surface-active agents
Assignee: Midwest Chemical and Processing Co Inc
•
Filing: 1965-12-27
•
Granted: 1969-05-20
•
Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Clifford R Everhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:45
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2605221A
Cited
US2795560A
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US2777818A
Cited
US3024201A
Cited
US2858271A
Cited
US2868726A
Cited
US3173864A
Cited
US3171811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |