US2574576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of corrosion of steel by brine containing dissolved oxygen
Assignee: Pure Oil Co
•
Filing: 1949-10-12
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Granted: 1951-11-13
•
Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 Glenn A Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:30
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/162; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
THE METHOD OF PROTECTING FERROUS METAL SURFACES AGAINST CORROSION BY BRIME CONTAINING DISSOLVED OXYGEN COMPRISING, ADDING TO SAID BRINE AS AN INHIBITOR WATER SOLUBLE ALKALI METAL DITHIOCARBAMATES SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, AND PROPYL SUBSTITUTED DITHIOCARBAMATES IN AMOUNT SUFFICIENT TO EFFECT A MATERIAL REDUCTION IN THE CORROSIVENESS OF SAID BRINE ON THE METAL SURFACE.
Claim 2
Independent Claim
57 words
THE METHOD OF PROTECTING FERROUS METAL SURFACES AGAINST CORROSION BY BRIME CONTAINING DISSOLVED OXYGEN COMPRISING, ADDING TO SAID BRINE AS AN INHIBITOR WATER SOLUBLE ALKALI METAL DITHIOCARBAMATES SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, AND PROPYL SUBSTITUTED DITHIOCARBAMATES IN AMOUNT SUFFICIENT TO EFFECT A MATERIAL REDUCTION IN THE CORROSIVENESS OF SAID BRINE ON THE METAL SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |