US3260673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibited phosphoric acid composition
Assignee: Monsanto Co
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Filing: 1964-01-27
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Granted: 1966-07-12
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Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 Fisher Arthur Orman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:07
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A CORROSION-INHIBITED PHOSPHORIC ACID COMPOSITION CONSISTING ESSENTIALLY OF SAID PHOSPHORIC ACID AND AT LEAST ABOUT 0.0405 WEIGHT PERCENT, BASED ON THE TOTAL WEIGHT OF SAID PHOSPHORIC ACID COMPOSITION, OF A MIXTURE OF (A) AN INORGANIC SALT SELECTED FROM THE GROUP CONSISTING OF IODIDES AND BROMIDES THAT ARE SOLUBLE AT ABOUT 25*C. IN 85/WEIGHT PERCENT ORTHOPHOSPHORIC ACID TO THE EXTENT OF AT LEAST ABOUT 0.0005 WEIGHT PERCENT; (B) AND ALIPHATIC AMINE SELECTED FROM THE GRIUP CONSISTING OF PRIMARY AND SECONDARY AMINES HAVING FROM 4 TO 28 CARBON ATOMS IN THEIR MOLECULES, SAID AMINE BEING SOLUBLE AT ABOUT 25*C. IN 85 WEIGHT PERCENT ORTHOPHOSPEHRIC ACID TO THE EXTENT OF AT LEAST ABOUT 0.02 WEIGHT PERCENT; ANF (C) A QUATERNARY AMMONIUM COMPOUND, SAID QUATERNARY AMMONIUM COMPOUND BEING SOLUBLE AT ABOUT 25*C. IN 85 WEIGHT PERCENT ORTHOPHOSPHORIC ACID TO THE EXTENT OF AT LEAST ABOUT 0.02 WEIGHT PERCENT, THE WEIGHT RATIO OF SAID AMINE TO SAID SALT IN SAID COMPOSITION BEING GREATER THAN ABOUT 2:1, AND THE WEIGHT RATIO OF SAID QUATERNARY AMMONIUM COMPOUND TO SAID SALT IN SAID COMPOSITION BEING GREATER THAN ABOUT 2:1.
Claim 2
Dependent Claim
181 words
A CORROSION-INHIBITED PHOSPHORIC ACID COMPOSITION CONSISTING ESSENTIALLY OF SAID PHOSPHORIC ACID AND AT LEAST ABOUT 0.0405 WEIGHT PERCENT, BASED ON THE TOTAL WEIGHT OF SAID PHOSPHORIC ACID COMPOSITION, OF A MIXTURE OF (A) AN INORGANIC SALT SELECTED FROM THE GROUP CONSISTING OF IODIDES AND BROMIDES THAT ARE SOLUBLE AT ABOUT 25*C. IN 85/WEIGHT PERCENT ORTHOPHOSPHORIC ACID TO THE EXTENT OF AT LEAST ABOUT 0.0005 WEIGHT PERCENT; (B) AND ALIPHATIC AMINE SELECTED FROM THE GRIUP CONSISTING OF PRIMARY AND SECONDARY AMINES HAVING FROM 4 TO 28 CARBON ATOMS IN THEIR MOLECULES, SAID AMINE BEING SOLUBLE AT ABOUT 25*C. IN 85 WEIGHT PERCENT ORTHOPHOSPEHRIC ACID TO THE EXTENT OF AT LEAST ABOUT 0.02 WEIGHT PERCENT; ANF (C) A QUATERNARY AMMONIUM COMPOUND, SAID QUATERNARY AMMONIUM COMPOUND BEING SOLUBLE AT ABOUT 25*C. IN 85 WEIGHT PERCENT ORTHOPHOSPHORIC ACID TO THE EXTENT OF AT LEAST ABOUT 0.02 WEIGHT PERCENT, THE WEIGHT RATIO OF SAID AMINE TO SAID SALT IN SAID COMPOSITION BEING GREATER THAN ABOUT 2:1, AND THE WEIGHT RATIO OF SAID QUATERNARY AMMONIUM COMPOUND TO SAID SALT IN SAID COMPOSITION BEING GREATER THAN ABOUT 2:1.
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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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |