Patent US3257316A successfully refreshed from Google Patents.
US3257316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-inhibited phosphate solutions and compositions useful for manufacturing them
Assignee: Monsanto Co
•
Filing: 1965-02-23
•
Granted: 1966-06-21
•
Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Robert P Langguth
- 👤 William W Morgenthaler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:44
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0028; A62D1/0035; C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; C23F11/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A CONCENTRATED AMMONIUM ORTHOPHOSPHATE COMPOSITION SUITABLE FOR USE IN THE MANUFACTURING OF AQUEOUS CORROSION-INHIBITED AMMONIUM ORTHOPHOSPHATE FIRE-FIGHTING SOLUTIONS TO PROTECT COPPER AND COPPER ALLOYS FROM CORRSION ORDINARILY CAUSED BY AQUEOUS SOLUTIONS OF AMMONIUM ORTHOPHOSPHATE, SAID COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST ONE AMMONIUM ORTHOPHOSPHATE SALT SELECTED FROM THE GROUP CONSISTING OF MONOAMMONIUM ORTHOPHOSPHATE AND DIAMMONIUM ORTHOPHOSPHATE AND A WATER-SOLUBLE INORGANIC COMPLEX CYANIDE COMPOUND; THE WEIGHT RATIO OF SAID AMMONIUM ORTHOPHOSPHATE SALT TO SAID COMPLEX CYANIDE COMPOUND IN SAID COMPOSITION BEING FROM ABOUT 3800:1 TO ABOUT 15:1.
Claim 2
Dependent Claim
86 words
A CONCENTRATED AMMONIUM ORTHOPHOSPHATE COMPOSITION SUITABLE FOR USE IN THE MANUFACTURING OF AQUEOUS CORROSION-INHIBITED AMMONIUM ORTHOPHOSPHATE FIRE-FIGHTING SOLUTIONS TO PROTECT COPPER AND COPPER ALLOYS FROM CORRSION ORDINARILY CAUSED BY AQUEOUS SOLUTIONS OF AMMONIUM ORTHOPHOSPHATE, SAID COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST ONE AMMONIUM ORTHOPHOSPHATE SALT SELECTED FROM THE GROUP CONSISTING OF MONOAMMONIUM ORTHOPHOSPHATE AND DIAMMONIUM ORTHOPHOSPHATE AND A WATER-SOLUBLE INORGANIC COMPLEX CYANIDE COMPOUND; THE WEIGHT RATIO OF SAID AMMONIUM ORTHOPHOSPHATE SALT TO SAID COMPLEX CYANIDE COMPOUND IN SAID COMPOSITION BEING FROM ABOUT 3800:1 TO ABOUT 15:1.
References Cited (Backward Citations)
USRE23740E
Cited
CA575798A
Cited
US2303399A
Cited
US3024100A
Cited
US3127932A
Cited
US3182018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |