US2760890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for and method of producing corrosion resistant metal coating
Assignee: Chemical Corp
•
Filing: 1953-10-14
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Granted: 1956-08-28
•
Expires: 1973-10-14
Abstract
No abstract record available.
Inventors
- 👤 John C Kosmos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:49
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24; C23C22/26; C23C22/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A BATH FOR IMPARTING A CORROSION RESISTANT FILM TO COPPER AND MAGNESIUM SURFACES AND CONSISTING OF AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY PER LITER OF SOLUTION OF SUBSTANTIALLY 300 GRAMS SODIUM BICHROMATE, 132 GRAMS NITRIC ACID, 180 GRAMS GLACIAL ACETIC ACID, AND 52.4 GRAMS SODIUM CHLORIDE, AND WATER ADDED TO SAID SOLUTION IN AN AMOUNT OF FROM 1 TO 100 TIMES THE VOLUME OF SAID SOLUTION.
Claim 2
Dependent Claim
65 words
A BATH FOR IMPARTING A CORROSION RESISTANT FILM TO COPPER AND MAGNESIUM SURFACES AND CONSISTING OF AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY PER LITER OF SOLUTION OF SUBSTANTIALLY 300 GRAMS SODIUM BICHROMATE, 132 GRAMS NITRIC ACID, 180 GRAMS GLACIAL ACETIC ACID, AND 52.4 GRAMS SODIUM CHLORIDE, AND WATER ADDED TO SAID SOLUTION IN AN AMOUNT OF FROM 1 TO 100 TIMES THE VOLUME OF SAID SOLUTION.
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |