US2537014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
process of making magnesia
Assignee: —
•
Filing: —
•
Granted: 1951-01-09
•
Expires: 1968-01-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:29
CPC Classifications
C; C04; C04B; C04B2/00; C04B2/10; C01; C01F; C01F5/00; C01F5/02; C01F5/06; C01F5/08; C01F5/14; C01F5/24; C01P; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/60; C01P2004/61; C01P2004/62; C01P2006/00; C01P2006/12; C01P2006/80; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3205; C04B2235/3206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
PROCESS OF MAKING MAGNESIA WHICH COMPRISES ADMIXING SILICA HAVING A SPECIFIC SURFACE OF A LEAST 6000 SQUARE CENTIMETERS PER GRAM AND A MAGNESIUM SALT SOLUTION, PRECIPITATING MAGNESIUM HYDROXIDE FROM SAID SOLUTION, FILTERING, AND FIRING THE FILTER CAKE TO FORM PERICLASE, AND SILICA BEING ADDED IN AN AMOUNT TO PROVIDE FROM 1% TO 5% BY WEIGHT OF SILICA BASED ON THE WEIGHT OF THE FIRED PRODUCT.
Claim 2
Dependent Claim
65 words
PROCESS OF MAKING MAGNESIA WHICH COMPRISES ADMIXING SILICA HAVING A SPECIFIC SURFACE OF A LEAST 6000 SQUARE CENTIMETERS PER GRAM AND A MAGNESIUM SALT SOLUTION, PRECIPITATING MAGNESIUM HYDROXIDE FROM SAID SOLUTION, FILTERING, AND FIRING THE FILTER CAKE TO FORM PERICLASE, AND SILICA BEING ADDED IN AN AMOUNT TO PROVIDE FROM 1% TO 5% BY WEIGHT OF SILICA BASED ON THE WEIGHT OF THE FIRED PRODUCT.
References Cited (Backward Citations)
US2095982A
Cited
US2428178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |