US3342749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibited phosphate solutions
Assignee: Monsanto Co
•
Filing: 1964-06-02
•
Granted: 1967-09-19
•
Expires: 1984-06-02
Abstract
No abstract record available.
Inventors
- 👤 Avrom R Handleman
- 👤 Robert P Langguth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:28
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; A; A62; A62D; A62D1/00; A62D1/0028; A62D1/0035; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/28; C01B25/38; C01B25/40; C01B25/405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
AN AQUEOUS COPPER CORROSION INHIBITED AMMONIUM ORTHOPHOSPHATE COMPOSITION HAVING A PH ABOVE ABOUT 7 AND CONSISTING ESSENTIALLY OF, IN ADDITION TO AN AMMONIUM ORTHOPHOSPHATE DISSOLVED THEREIN IN AN AMOUNT OF AT LEAST 0.5 WEIGHT PERCENT (A) A WATER SOLUBLE INORGANIC THIOSULFATE IN AN AMOUNT OF AT LEAST ABOUT 0.0075 WEIGHT PE
Claim 2
Dependent Claim
51 words
AN AQUEOUS COPPER CORROSION INHIBITED AMMONIUM ORTHOPHOSPHATE COMPOSITION HAVING A PH ABOVE ABOUT 7 AND CONSISTING ESSENTIALLY OF, IN ADDITION TO AN AMMONIUM ORTHOPHOSPHATE DISSOLVED THEREIN IN AN AMOUNT OF AT LEAST 0.5 WEIGHT PERCENT (A) A WATER SOLUBLE INORGANIC THIOSULFATE IN AN AMOUNT OF AT LEAST ABOUT 0.0075 WEIGHT PE
References Cited (Backward Citations)
USRE25394E
Cited
US1997669A
Cited
US2303399A
Cited
US2617713A
Cited
US2901428A
Cited
US2972581A
Cited
US3238136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |