Patent US2880034A successfully refreshed from Google Patents.
Patent US3260669A successfully refreshed from Google Patents.
US3260669A
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Corrosion inhibiting composition for use in oil well fluids
Assignee: Texaco Inc
•
Filing: 1963-06-14
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Granted: 1966-07-12
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Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Schoen William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:21
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A CORROSION INHIBITING COMPOSITION FOR USE IN OIL WELL FLUIDS CONSISTING ESSENTIALLY OF DIMERIZED LINOLEIC ACID AND 2-METHYLPIPERAZINE, THE WEIGHT RATIO OF SAID ACID TO SAID METHYLPIPERAZINE BEING BETWEEN ABOUT 3.5:1.
Claim 2
Dependent Claim
31 words
A CORROSION INHIBITING COMPOSITION FOR USE IN OIL WELL FLUIDS CONSISTING ESSENTIALLY OF DIMERIZED LINOLEIC ACID AND 2-METHYLPIPERAZINE, THE WEIGHT RATIO OF SAID ACID TO SAID METHYLPIPERAZINE BEING BETWEEN ABOUT 3.5:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |