US3070464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning magnesium articles
Assignee: Dow Chemical Co
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Filing: 1959-09-14
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Granted: 1962-12-25
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Expires: 1979-09-14
Abstract
No abstract record available.
Inventors
- 👤 Donald J Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:29
CPC Classifications
C; C23; C23F; C23F3/00; C23F3/02; C23F3/03; C23G; C23G1/00; C23G1/02; C23G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE LIQUID COMPOSITION FOR CLEANING AND BRIGHTENING THE SURFACES OF METAL ARTICLES COMPOSAED OF AT LEAST ABOUT 75 PERCENT MAGNESIUM METAL WHICH CONSISTS OF A SOLUTION COMPRISING BETWEEN ABOUT 0.1 AND 2 N HNO3, BETWEEN ABOUT 0.3 AND 5.0 N NITRATE SALT SELECTED FROM THE CLASS CONSISTING OF AMMONIUM, ALKALI METAL AND ALKALINE EARTH METAL NITRATES, BETWEEN ABOUT 0.5 AND 5 N GLYCOLIC ACID, AND THE BALANCE WATER.
Claim 2
Dependent Claim
68 words
THE LIQUID COMPOSITION FOR CLEANING AND BRIGHTENING THE SURFACES OF METAL ARTICLES COMPOSAED OF AT LEAST ABOUT 75 PERCENT MAGNESIUM METAL WHICH CONSISTS OF A SOLUTION COMPRISING BETWEEN ABOUT 0.1 AND 2 N HNO3, BETWEEN ABOUT 0.3 AND 5.0 N NITRATE SALT SELECTED FROM THE CLASS CONSISTING OF AMMONIUM, ALKALI METAL AND ALKALINE EARTH METAL NITRATES, BETWEEN ABOUT 0.5 AND 5 N GLYCOLIC ACID, AND THE BALANCE WATER.
References Cited (Backward Citations)
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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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |