US3100170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickling magnesium articles
Assignee: Dow Chemical Co
•
Filing: 1960-01-04
•
Granted: 1963-08-06
•
Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Levy Donald Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:24
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF PICKLING A MAGNESIUM ARTICLE CONTAINING AT LEAST ABOUT 75 PERCENT MAGNESIUM AND NOT OVER 2 PERCENT ZINC TO REMOVE CONTAMINATING TARNISH AND SCALE THEREFROM AND TO IMPROVE THE CORROSION RESISTANCE THEREOF WHICH CONSISTS OF SUBJECTING THE ARTICLE TO THE ACTION OF AN AQUEOUS COMPOSITION PICKLE COMPOSITION CONSISTING ESSENTIALLY OF H2SO4 HAVING AN ACID NORMALITY OF AT LEAST 20 BUT NOT OVER 25 AND HAVING DISSOLVED THEREIN A COMPOUND SELECTED FROM THE CLASS CONSISTING OF SOLUBLE NITRATES, HALIDES, OXYHALIDES, HALOGEN-SUBDTITUTED ORGANIC ACIDS, AND MIXTURES THEREOF CAPABLE OF YIELDING NITRATE AND HALOGEN-CONTAINING IONS IN SOLUTION, WHEREIN THE HALOGEN IS CHLORINE OR IODINE, IN SUFFICIENT AMOUNT TO PROVIDE BETWEEN 5 AND 250 GRAMS OF THE NITRATE AND HALOGEN FRACTIONS OF SAID COMPOUNDS PER LITER OF SAID AQUEOUS COMPOSITION.
Claim 2
Independent Claim
128 words
THE METHOD OF PICKLING A MAGNESIUM ARTICLE CONTAINING AT LEAST ABOUT 75 PERCENT MAGNESIUM AND NOT OVER 2 PERCENT ZINC TO REMOVE CONTAMINATING TARNISH AND SCALE THEREFROM AND TO IMPROVE THE CORROSION RESISTANCE THEREOF WHICH CONSISTS OF SUBJECTING THE ARTICLE TO THE ACTION OF AN AQUEOUS COMPOSITION PICKLE COMPOSITION CONSISTING ESSENTIALLY OF H2SO4 HAVING AN ACID NORMALITY OF AT LEAST 20 BUT NOT OVER 25 AND HAVING DISSOLVED THEREIN A COMPOUND SELECTED FROM THE CLASS CONSISTING OF SOLUBLE NITRATES, HALIDES, OXYHALIDES, HALOGEN-SUBDTITUTED ORGANIC ACIDS, AND MIXTURES THEREOF CAPABLE OF YIELDING NITRATE AND HALOGEN-CONTAINING IONS IN SOLUTION, WHEREIN THE HALOGEN IS CHLORINE OR IODINE, IN SUFFICIENT AMOUNT TO PROVIDE BETWEEN 5 AND 250 GRAMS OF THE NITRATE AND HALOGEN FRACTIONS OF SAID COMPOUNDS PER LITER OF SAID AQUEOUS COMPOSITION.
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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) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |