US2904414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formulation for producing a protective bright chemically polished surface on zinc and cadmium
Assignee: Allied Res Products Inc
•
Filing: 1954-08-04
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Granted: 1959-09-15
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Expires: 1974-08-04
Abstract
No abstract record available.
Inventors
- 👤 Charles W Ostrander
- 👤 Congiundi Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:20
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A COMPOSITION FOR USE IN AQUEOUS SOLUTION TO IMPART A PROTECTIVE, BRIGHT COATING TO ZINC AND CADMIUM ARTICLES COMPRISING AT LEAST ONE CHROMIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMIC ACID AND WATER SOLUBLE SALTS THEREOF, AT LEAST ONE SULFATE COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND WATER SOLUBLE SALTS THEREOF, AT LEAST ONE BORIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORIC ACID AND WATER SOLUBLE SALTS THEREOF AND NITRIC ACID AND IN WHICH SAID CHROMIC COMPOUND IS IN AMOUNT EQUIVALENT TO FROM ABOUT 20 TO 160 GRAMS OF CHROMIC ACID PER LITER OF SOLUTION, SAID SULFATE COMPOUND IS IN AMOUNT EQUIVALENT TO AN AMOUNT, IN GRAMS OF SODIUM SULFATE PER LITER OF SOLUTION, OF SODIUM SULFATE HAVING A RATIO BY WEIGHT OF 1:6.5 TO SAID EQUIVALENT CHROMIC ACID RANGE, SAID BORIC COMPOUND IS IN AMOUNT EQUIVALENT TO FROM ABOUT 10 TO 40 GRAMS OF BORIC ACID PER LITER OF SOLUTION AND THE NITRIC ACID IS IN AMOUNT TO GIVE A PH OF NOT GREATER THAN ABOUT 1.0, WHEN THE SAID COMPOSITION IS PUT IN AQUEOUS SOLUTION.
Claim 2
Dependent Claim
182 words
A COMPOSITION FOR USE IN AQUEOUS SOLUTION TO IMPART A PROTECTIVE, BRIGHT COATING TO ZINC AND CADMIUM ARTICLES COMPRISING AT LEAST ONE CHROMIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMIC ACID AND WATER SOLUBLE SALTS THEREOF, AT LEAST ONE SULFATE COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND WATER SOLUBLE SALTS THEREOF, AT LEAST ONE BORIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORIC ACID AND WATER SOLUBLE SALTS THEREOF AND NITRIC ACID AND IN WHICH SAID CHROMIC COMPOUND IS IN AMOUNT EQUIVALENT TO FROM ABOUT 20 TO 160 GRAMS OF CHROMIC ACID PER LITER OF SOLUTION, SAID SULFATE COMPOUND IS IN AMOUNT EQUIVALENT TO AN AMOUNT, IN GRAMS OF SODIUM SULFATE PER LITER OF SOLUTION, OF SODIUM SULFATE HAVING A RATIO BY WEIGHT OF 1:6.5 TO SAID EQUIVALENT CHROMIC ACID RANGE, SAID BORIC COMPOUND IS IN AMOUNT EQUIVALENT TO FROM ABOUT 10 TO 40 GRAMS OF BORIC ACID PER LITER OF SOLUTION AND THE NITRIC ACID IS IN AMOUNT TO GIVE A PH OF NOT GREATER THAN ABOUT 1.0, WHEN THE SAID COMPOSITION IS PUT IN AQUEOUS SOLUTION.
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |