US2515529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibiting compositions and method
Assignee: ChampionX LLC
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Filing: 1946-07-22
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Granted: 1950-07-18
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Expires: 1966-07-22
Abstract
No abstract record available.
Inventors
- 👤 John W Ryznar
- 👤 Marjorie A Peich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:53
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; C23F11/187; C23F11/188
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A CORROSION INHIBITING COMPOSITION COMPRISING ESSENTIALLY A WATER SOLUBLE POLYPHOSPHATE AND A WATER SOLUBLE INORGANIC COMPLEX CYANIDE, THE RATIO OF SAID CYANIDE TO SAID PHOSPHATE BEING WITHIN THE RANGE OF 0.05 TO 0.5 BY WEIGHT OF SAID PHOSPHATE, AND SAID COMPOSITION BEING CAPABLE OF DISSOLVING IN WATER TO GIVE A DISSOLVED PHOSPHATE CONCENTRATION WITHIN THE RANGE OF 0.1 GRAIN PER GALLON TO 5 GRAINS PER GALLON OF WATER AND A DISSOLVED CYANIDE CONCENTRATION WITHIN THE RANGE OF 0.05 PER GALLON TO 0.5 GRAIN PER GALLON OF WATER.
Claim 2
Dependent Claim
87 words
A CORROSION INHIBITING COMPOSITION COMPRISING ESSENTIALLY A WATER SOLUBLE POLYPHOSPHATE AND A WATER SOLUBLE INORGANIC COMPLEX CYANIDE, THE RATIO OF SAID CYANIDE TO SAID PHOSPHATE BEING WITHIN THE RANGE OF 0.05 TO 0.5 BY WEIGHT OF SAID PHOSPHATE, AND SAID COMPOSITION BEING CAPABLE OF DISSOLVING IN WATER TO GIVE A DISSOLVED PHOSPHATE CONCENTRATION WITHIN THE RANGE OF 0.1 GRAIN PER GALLON TO 5 GRAINS PER GALLON OF WATER AND A DISSOLVED CYANIDE CONCENTRATION WITHIN THE RANGE OF 0.05 PER GALLON TO 0.5 GRAIN PER GALLON OF WATER.
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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |