Patent US2823134A successfully refreshed from Google Patents.
US2823134A
Expired / Lapsed
US
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Densifying magnesia
Assignee: IIT Research Institute
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Filing: 1955-02-18
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Granted: 1958-02-11
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Expires: 1975-02-18
Abstract
No abstract record available.
Inventors
- 👤 Leon M Atlas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:29
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/131; C04B2/00; C04B2/10; C04B2/104; C04B35/00; C04B35/01; C04B35/03; C04B35/04; C04B35/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR DENSIFYING MAGNESIA, WHICH COMPRISES INTIMATELY ADMIXING A FINELY DIVIDED MAGNESIUM COMPOUND WHICH YIELDS PERICLASE UPON FIRING AND A LITHIUM COMPOUND, SAID LITHIUM COMPOUND BEING ADDED IN AN AMOUNT SUFFICIENT TO PROVIDE 0.01 TO 5 EQUIVALENT PERCENT OF THE LITHIUM COMPOUND IN THE MIXTURE ON A DRY BASIS, AND FIRING SAID MIXTURE AT A TEMPERATURE OF AT LEAST 1000*C. TO FORM HIGH-PURITY PERICLASE.
Claim 2
Dependent Claim
65 words
A PROCESS FOR DENSIFYING MAGNESIA, WHICH COMPRISES INTIMATELY ADMIXING A FINELY DIVIDED MAGNESIUM COMPOUND WHICH YIELDS PERICLASE UPON FIRING AND A LITHIUM COMPOUND, SAID LITHIUM COMPOUND BEING ADDED IN AN AMOUNT SUFFICIENT TO PROVIDE 0.01 TO 5 EQUIVALENT PERCENT OF THE LITHIUM COMPOUND IN THE MIXTURE ON A DRY BASIS, AND FIRING SAID MIXTURE AT A TEMPERATURE OF AT LEAST 1000*C. TO FORM HIGH-PURITY PERICLASE.
References Cited (Backward Citations)
US2281477A
Cited
US2571101A
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US1248880A
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US2335374A
Cited
US2641530A
Cited
US2656279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |