US2955083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitors in well treating compositions
Assignee: BJ Service Inc
•
Filing: 1956-08-13
•
Granted: 1960-10-04
•
Expires: 1976-08-13
Abstract
No abstract record available.
Inventors
- 👤 Levin Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:47
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/54; C23; C23F; C23F11/00; C23F11/04; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A WELL TREATING COMPOSITION COMPRISING AN AQUEOUS HYDROCHLORIC ACID SOLUTION AND A CORROSION INHIBITOR COMPRISING A DERIVATIVE OF A HYDROGENATED PYRIDINE OF THE FORMULA TYPE
Claim 2
Dependent Claim
25 words
A WELL TREATING COMPOSITION COMPRISING AN AQUEOUS HYDROCHLORIC ACID SOLUTION AND A CORROSION INHIBITOR COMPRISING A DERIVATIVE OF A HYDROGENATED PYRIDINE OF THE FORMULA TYPE
References Cited (Backward Citations)
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Cited
US2694001A
Cited
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Cited
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Cited
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Cited
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Cited
US2748140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |