US3531381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the corrosion resistance of oxidized metal surfaces
Assignee: Olin Corp
•
Filing: 1965-07-07
•
Granted: 1970-09-29
•
Expires: 1985-07-07
Abstract
No abstract record available.
Inventors
- 👤 Charles J Amore
- 👤 James F Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:07
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2080299A
Cited
FR907180A
Cited
US2469237A
Cited
US2515934A
Cited
US3012917A
Cited
US3100728A
Cited
US3260622A
Cited
US3345544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |