US3248334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibited aqueous nonoxidizing acid compositions
Assignee: Dow Chemical Co
•
Filing: 1962-03-08
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Granted: 1966-04-26
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Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Roger F Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:24
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/04; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71; C07C47/00; C07C47/52; C07C47/575; C07C49/00; C07C49/587; C07C49/753
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A CORROSION INHIBITIED AQUEOUS NON-OXIDIZING ACID CONTAINING, AS THE ESSENTIAL CORROSION INHIBITOR THEREFOR, AN EFFECTIVE AMOUNT OF A CYCLIC COMPOUND HAVING ONE OF THE FORMULA:
Claim 2
Dependent Claim
25 words
A CORROSION INHIBITIED AQUEOUS NON-OXIDIZING ACID CONTAINING, AS THE ESSENTIAL CORROSION INHIBITOR THEREFOR, AN EFFECTIVE AMOUNT OF A CYCLIC COMPOUND HAVING ONE OF THE FORMULA:
References Cited (Backward Citations)
US2993864A
Cited
US2952509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |