US3814812A
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US
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Medicament and method of increasing the calcium content of the blood
Assignee: Berthier J SA Lab
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Filing: 1971-02-23
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Granted: 1974-06-04
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Expires: 1991-02-23
Abstract
Abstract A DERIVATIVE OF DIPROPYLACETIC ACID HAVING THE FORMULA: ((C3H7-)2-CH-COO-)2-CA WHICH WHEN MIXED WITH A PHARMACEUTICALLY ACCEPTABLE CARRIER MEDIUM IS ADMINISTERED TO HUMANS AND ANIMALS TO INCREASE THE CALCIUM CONTENT OF THE BLOOD, IS PREPARED BY STIRRING AND HEATING TO LESS THAN 10*C, A MIXTURE OF WATER AND CALCIUM OXIDE, ADDING DIPROPYLACETIC ACID, KEEPING THE MIXTURE FOR SEVERAL HOURS BELOW 100* C., FILTEING CONCENTRATING THE FILTRATE, TREATING THE FILTRATE WITH ACETONE, REMOVING THE ACETONE AND DRYING THE RESIDUE.
Inventors
- 👤 P Eymard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:24
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/06; C; C07; C07C; C07C53/00; C07C53/126; C07C53/128
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |