US2992081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibited composition
Assignee: Sinclair Refining Co
•
Filing: 1957-07-30
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Granted: 1961-07-11
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Expires: 1977-07-30
Abstract
No abstract record available.
Inventors
- 👤 David B Sheldahl
- 👤 Thomas O Counts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:39
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437; C10M; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A LIQUID PETROLEUM OIL TO WHICH A CORROSION INHIBITING PROPERTY HAS BEEN IMPARTED WHEN USED UNDER HIGH HUMIDITY CONDITIONS BY THE INCORPORATION OF A SMALL BUT EFFECTIVE AMOUNT OF A CHEMICAL COMPOUND SELECTED FROM THE FORMULAE:
Claim 2
Dependent Claim
36 words
A LIQUID PETROLEUM OIL TO WHICH A CORROSION INHIBITING PROPERTY HAS BEEN IMPARTED WHEN USED UNDER HIGH HUMIDITY CONDITIONS BY THE INCORPORATION OF A SMALL BUT EFFECTIVE AMOUNT OF A CHEMICAL COMPOUND SELECTED FROM THE FORMULAE:
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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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |