Patent US2581540A successfully refreshed from Google Patents.
US2581540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing corrosion in wells
Assignee: Gulf Research and Development Co
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Filing: 1948-09-02
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Granted: 1952-01-08
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Expires: 1968-09-02
Abstract
No abstract record available.
Inventors
- 👤 Harvey T Kennedy
- 👤 Walter F Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD OF REDUCING CORROSION IN A WELL WHICH CONSISTS IN DISINTEGRATING IN THE WELL STREAM COMPRESSED SHAPES OF A MIXTURE PRODUCED BY DISSOLVING MELAMINE RESIN IN MAGNESIUM CHLORIDE BRINE IN THE PROPORTIONS OF ABOUT 3 POUNDS MELAMINE RESIN TO 3.6 POUNDS MAGNESIUM CHLORIDE SOLUTION OF SPECIFIC GRAVITY 1.19, THEN MIXING SUCH SOLUTION WITH SODIUM BICARBONATE AND CALCINED MAGNESIA IN THE PROPORTION OF ABOUT 100 POUNDS SODIUM BICARBONATE TO 2.5 POUNDS CALCINED MAGNESIA.
Claim 2
Independent Claim
73 words
A METHOD OF REDUCING CORROSION IN A WELL WHICH CONSISTS IN DISINTEGRATING IN THE WELL STREAM COMPRESSED SHAPES OF A MIXTURE PRODUCED BY DISSOLVING MELAMINE RESIN IN MAGNESIUM CHLORIDE BRINE IN THE PROPORTIONS OF ABOUT 3 POUNDS MELAMINE RESIN TO 3.6 POUNDS MAGNESIUM CHLORIDE SOLUTION OF SPECIFIC GRAVITY 1.19, THEN MIXING SUCH SOLUTION WITH SODIUM BICARBONATE AND CALCINED MAGNESIA IN THE PROPORTION OF ABOUT 100 POUNDS SODIUM BICARBONATE TO 2.5 POUNDS CALCINED MAGNESIA.
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) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |