US2957752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the density of
Assignee: —
•
Filing: —
•
Granted: 1960-10-25
•
Expires: 1977-10-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:46
CPC Classifications
C; C01; C01F; C01F5/00; C01F5/02; C01F5/06; C01F5/10; C01F5/08; C01F5/14; C04; C04B; C04B2/00; C04B2/10; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE PROCESS OF INCREASING THE DENSITY OF DEAD-BURNED MAGNESIUM OXIDE PREPARED BY THERMAL DECOMPOSITION OF MAGNESIUM CHLORIDE HYDRATE WHICH COMPRISES ADMIXING SAID MAGNESIUM OXIDE WITH A LITHIUM COMPOUND VOLTALIZABLE UNDER THE FIRING TEMPERATURE CONDITIONS THEREAFTER EMPLOYED, HYDRATING THE MIXTURE IN A STEAM ATMOSPHERE AT A PRESSURE IN EXCESS OF ABOUT 100 P.S.I., DRYING THE HYDRATED MIXTURE, AND FIRING THE DRIED MIXTURE AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 800*C. AND ABOUT 1500*C., WHEREBY SAID MAGNESIUM OXIDE ID DENSIFIED AND SUBSTANTIALLY ALL OF SAID LITHIUM COMPOUND IS VOLATILIZED.
Claim 2
Dependent Claim
88 words
THE PROCESS OF INCREASING THE DENSITY OF DEAD-BURNED MAGNESIUM OXIDE PREPARED BY THERMAL DECOMPOSITION OF MAGNESIUM CHLORIDE HYDRATE WHICH COMPRISES ADMIXING SAID MAGNESIUM OXIDE WITH A LITHIUM COMPOUND VOLTALIZABLE UNDER THE FIRING TEMPERATURE CONDITIONS THEREAFTER EMPLOYED, HYDRATING THE MIXTURE IN A STEAM ATMOSPHERE AT A PRESSURE IN EXCESS OF ABOUT 100 P.S.I., DRYING THE HYDRATED MIXTURE, AND FIRING THE DRIED MIXTURE AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 800*C. AND ABOUT 1500*C., WHEREBY SAID MAGNESIUM OXIDE ID DENSIFIED AND SUBSTANTIALLY ALL OF SAID LITHIUM COMPOUND IS VOLATILIZED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |