US2543959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium oxychloride cement mix and method of making
Assignee: FMC Corp
•
Filing: 1945-09-01
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Granted: 1951-03-06
•
Expires: 1965-09-01
Abstract
No abstract record available.
Inventors
- 👤 William C Eastin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:08
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/30; C04B28/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE PROCESS FOR PRODUCING MAGNESIA OXYCHLORIDE CEMENTS WHICH DO NOT CONTRACT EXCESSIVELY DURING CURING, FROM A MAGNESIA DERIVED BY THE CALCINATION OF MAGNESIUM HYDROXIDE PRECIPITATED FROM A MAGNESIUM COMPOUND IN AN AQUEOUS SOLUTION AND WHICH YIELDS CEMENTS HAVING PROHIBITIVE CONTRACTING TENDENCIES WHEN COMPOUNDED WITH MAGNESIUM CHLORIDE SOLUTION AND FILLERS COMPRISING, MIXING A SMALL AMOUNT SUFFICIENT TO INHIBIT EXCESSIVE CONTRACTION OF A WATER-SOLUBLE SALT OF A PHOSPHORIC ACID HAVING A LOWER PROPORTION OF COMBINED MOLECULES OF WATER THAN ORTHOPHOSPHORIC ACID WITH MAGNESIA HAVING SUCH PROPERTY, WITH A FILLER AND WITH MAGNESIUM CHLORIDE SOLUTION.
Claim 2
Dependent Claim
92 words
THE PROCESS FOR PRODUCING MAGNESIA OXYCHLORIDE CEMENTS WHICH DO NOT CONTRACT EXCESSIVELY DURING CURING, FROM A MAGNESIA DERIVED BY THE CALCINATION OF MAGNESIUM HYDROXIDE PRECIPITATED FROM A MAGNESIUM COMPOUND IN AN AQUEOUS SOLUTION AND WHICH YIELDS CEMENTS HAVING PROHIBITIVE CONTRACTING TENDENCIES WHEN COMPOUNDED WITH MAGNESIUM CHLORIDE SOLUTION AND FILLERS COMPRISING, MIXING A SMALL AMOUNT SUFFICIENT TO INHIBIT EXCESSIVE CONTRACTION OF A WATER-SOLUBLE SALT OF A PHOSPHORIC ACID HAVING A LOWER PROPORTION OF COMBINED MOLECULES OF WATER THAN ORTHOPHOSPHORIC ACID WITH MAGNESIA HAVING SUCH PROPERTY, WITH A FILLER AND WITH MAGNESIUM CHLORIDE SOLUTION.
References Cited (Backward Citations)
US1468930A
Cited
US2351641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |