Patent US2944969A successfully refreshed from Google Patents.
US2944969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of rust and corrosion
Assignee: Baker Petrolite LLC
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Filing: 1957-02-06
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Granted: 1960-07-12
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Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Verner L Stromberg
- 👤 William B Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:00
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OD INHIBITING CORROSION OF CORRODIBLE FERROUS METALS EMPLOYED IN THE RECOVERY, TRANSPORTATION AND REFINING OF PETROLEUM HYDROCARBON FLUIDS, AND HYDROCARBON FLUIDS CONTAINING WATER AND A MEMBER OF THE GROUP OF CORROSIVE MATERIALS CONSISTING OF HYDROGEN SULFIDE, CARBON DIOXIDE, ORGANIC ACIDS CONTAINING 2 TO 4 CARBON ATOMS PER MOLECULE, COMBINATIONS OF THESE MATERIALS WITH OXYGEN, AND COMBINATIONS OF SAID MATERIALS WITH EACH OTHER AND OXYGEN, AND SAID METHOD COMPRISING ADDING TO SAID FLUIDS AT LEAST 5 PARTS PER MILLION OF A NON-BASIC AMIDIC ACID OF THE FORMULA:
Claim 2
Independent Claim
88 words
A METHOD OD INHIBITING CORROSION OF CORRODIBLE FERROUS METALS EMPLOYED IN THE RECOVERY, TRANSPORTATION AND REFINING OF PETROLEUM HYDROCARBON FLUIDS, AND HYDROCARBON FLUIDS CONTAINING WATER AND A MEMBER OF THE GROUP OF CORROSIVE MATERIALS CONSISTING OF HYDROGEN SULFIDE, CARBON DIOXIDE, ORGANIC ACIDS CONTAINING 2 TO 4 CARBON ATOMS PER MOLECULE, COMBINATIONS OF THESE MATERIALS WITH OXYGEN, AND COMBINATIONS OF SAID MATERIALS WITH EACH OTHER AND OXYGEN, AND SAID METHOD COMPRISING ADDING TO SAID FLUIDS AT LEAST 5 PARTS PER MILLION OF A NON-BASIC AMIDIC ACID OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |