US3003955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting corrosion
Assignee: Pan American Petroleum Corp
•
Filing: 1956-08-02
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Granted: 1961-10-10
•
Expires: 1976-08-02
Abstract
No abstract record available.
Inventors
- 👤 Loyd W Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:14
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; C23F11/143; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD OF INHIBITING CORROSION BY FLUIDS CONTAINING WATER AND A MEMBER OF THE GROUP OF CORROSIVE MATERIALS CONSISTING OF OXYGEN, HYDROGEN SULFIDE, CARBON DIOXIDE, CARBOXYLIC ACIDS CONTAINING FROM 2 TO 4 CARBON ATOMS PER MOLECULE, AND COMBINATIONS OF THE INDIVIDUAL CORROSIVE MATERIALS, COMPRISING ADDING TO SAID FLUIDS AT LEAST ABOUT 5 PARTS PER MILLION (BY WEIGHT) OF A POLYAMINE SALT OF A CARBOXYLIC ACID RESIDUE, AND POLYAMINE HAVING THE FORMULA RNHR''NH2, WHEREIN R IS A HYDROCARBON RADICAL CONTAINING AT LEAST ABOUT 10 CARBON ATOMS, N IS A NITROGEN ATOM, H IS A HYDROCARBON ATOMS, AND R'' IS A HYDROCARBON RADICAL CONTAINING FROM 2 TO 4 CARBON ATOMS, AND SAID CARBOXYLIC ACID RESIDUE CONTAINING HIGHLY ATOMS PER ACID RADICAL.
Claim 2
Independent Claim
119 words
A METHOD OF INHIBITING CORROSION BY FLUIDS CONTAINING WATER AND A MEMBER OF THE GROUP OF CORROSIVE MATERIALS CONSISTING OF OXYGEN, HYDROGEN SULFIDE, CARBON DIOXIDE, CARBOXYLIC ACIDS CONTAINING FROM 2 TO 4 CARBON ATOMS PER MOLECULE, AND COMBINATIONS OF THE INDIVIDUAL CORROSIVE MATERIALS, COMPRISING ADDING TO SAID FLUIDS AT LEAST ABOUT 5 PARTS PER MILLION (BY WEIGHT) OF A POLYAMINE SALT OF A CARBOXYLIC ACID RESIDUE, AND POLYAMINE HAVING THE FORMULA RNHR''NH2, WHEREIN R IS A HYDROCARBON RADICAL CONTAINING AT LEAST ABOUT 10 CARBON ATOMS, N IS A NITROGEN ATOM, H IS A HYDROCARBON ATOMS, AND R'' IS A HYDROCARBON RADICAL CONTAINING FROM 2 TO 4 CARBON ATOMS, AND SAID CARBOXYLIC ACID RESIDUE CONTAINING HIGHLY ATOMS PER ACID RADICAL.
References Cited (Backward Citations)
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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) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |