US3053719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and process for etching magnesium
Assignee: Purex Corp Ltd
•
Filing: 1958-12-08
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Granted: 1962-09-11
•
Expires: 1978-12-08
Abstract
No abstract record available.
Inventors
- 👤 Albert R Jones
- 👤 Quentin H Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:05
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COMPOSITION OF MATTER WHICH WHEN ADDED TO AQUEOUS SULFURIC ACID FORMS AN ETCHING SOLUTION FOR MAGNESIUM, WHICH CONSISTS ESSENTIALLY OF ABOUT 45 TO ABOUT 84 PARTS BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF SODIUM SUFLATE AND SODIUM BISULFATE, ABOUT 10 TO ABOUT 25 PARTS BY WEIGHT OF SODIUM XYLENE SULFONATE
Claim 2
Dependent Claim
54 words
A COMPOSITION OF MATTER WHICH WHEN ADDED TO AQUEOUS SULFURIC ACID FORMS AN ETCHING SOLUTION FOR MAGNESIUM, WHICH CONSISTS ESSENTIALLY OF ABOUT 45 TO ABOUT 84 PARTS BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF SODIUM SUFLATE AND SODIUM BISULFATE, ABOUT 10 TO ABOUT 25 PARTS BY WEIGHT OF SODIUM XYLENE SULFONATE
References Cited (Backward Citations)
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US2287650A
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US2318559A
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US2674523A
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US2739047A
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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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |