Patent US2943982A successfully refreshed from Google Patents.
US2943982A
Expired / Lapsed
US
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Processing of dicalcium phosphate and composition thereof
Assignee: Individual
•
Filing: 1955-10-10
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Granted: 1960-07-05
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Expires: 1975-10-10
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Dahlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:46
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/32; C01B25/327
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
55 words
THE PROCESS OF SIMULTANEOUSLY COMMINUTING DICALCIUM PHOSPHATE AND FORMING A SUSPENSION THEREOF CONPRISING, BRINGING DICALCIUM PHOSPHATE TOGETHER WITH WATER AND A MINOR AMOUNT OF A SWELLING CLAY OF THE MONTMORILLONITE GROUP, HEATING THE MIXTURE THUS FORMED TO AT LEAST 200* F., SAID TEMPERATURE BEING ATTAINED WITHIN FIFTEEN MINUTES, AND SUBSEQUENTLY COOLING THE MIXTURE FOR USE.
Claim 2
Dependent Claim
55 words
THE PROCESS OF SIMULTANEOUSLY COMMINUTING DICALCIUM PHOSPHATE AND FORMING A SUSPENSION THEREOF CONPRISING, BRINGING DICALCIUM PHOSPHATE TOGETHER WITH WATER AND A MINOR AMOUNT OF A SWELLING CLAY OF THE MONTMORILLONITE GROUP, HEATING THE MIXTURE THUS FORMED TO AT LEAST 200* F., SAID TEMPERATURE BEING ATTAINED WITHIN FIFTEEN MINUTES, AND SUBSEQUENTLY COOLING THE MIXTURE FOR USE.
Claim 3
Dependent Claim
55 words
AN AQUEOUS SUSPENSION OF DICALCIUM PHOSPHATE COMPRISING WATER, DICALCIUM PHOSPHATE HAVING A PARTICLE SIZE OF ABOUT 1 TO 4 MICRONS, AND A SWELLING CLAY OF THE MONTMORILLONITE GROUP TO THE EXTENT OF AT LEAST 1/30 OF THE WEIGHT OF THE DICALCIUM PHOSPHATE, THE SAID DICALCIUM PHOSPHATE HAVING BEEN HEAT-SHATTERED BY THE PROCESS OF CLAIM 1.
References Cited (Backward Citations)
US1943856A
Cited
US2296494A
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US2359326A
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US2462104A
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US2689170A
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US2697024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |