US2990374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and product for removing and inhibiting corrosion
Assignee: Individual
•
Filing: 1956-06-27
•
Granted: 1961-06-27
•
Expires: 1976-06-27
Abstract
No abstract record available.
Inventors
- 👤 Schwartz Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:28
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/10; C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A COMPOSITON FOR THE REMOVAL AND PREVENTION OF CORROSION ON METAL SURFACES CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF ABOUT 10% BY WEIGHT OF A DETERGENT PHOSPHATE SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM ACID PHOSPHATE AND SODIUM ACID PYROPHOSPHATE HAVING AN ACID REACTION, ABOUT 5% OF AN ALKALINE PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF SODIUM TRIPOLYPHOSPHATE, TETRASODIUM PYROPHOSPHATE AND DISODIUM ORTHOPHOSPHATE, AND ABOUT 1% OF AN ACID-STABLE ORGANIC SURFACE ACTIVE AGENT, THE COMPOSITION HAVING A PH VALUE FROM ABOUT 5 TO ABOUT 6.
Claim 2
Dependent Claim
86 words
A COMPOSITON FOR THE REMOVAL AND PREVENTION OF CORROSION ON METAL SURFACES CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF ABOUT 10% BY WEIGHT OF A DETERGENT PHOSPHATE SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM ACID PHOSPHATE AND SODIUM ACID PYROPHOSPHATE HAVING AN ACID REACTION, ABOUT 5% OF AN ALKALINE PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF SODIUM TRIPOLYPHOSPHATE, TETRASODIUM PYROPHOSPHATE AND DISODIUM ORTHOPHOSPHATE, AND ABOUT 1% OF AN ACID-STABLE ORGANIC SURFACE ACTIVE AGENT, THE COMPOSITION HAVING A PH VALUE FROM ABOUT 5 TO ABOUT 6.
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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |