US4624947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid, salts thereof, and processes therefor
Assignee: Henkel AG and Co KGaA
•
Filing: 1985-09-16
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Granted: 1986-11-25
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Expires: 2005-09-16
Abstract
Abstract 4-Dimethylamino-1-hydroxybutane-1,1-diphosphonic acid and water-soluble salts thereof, methods for their preparation, and uses thereof as complexing agents.
Inventors
- 👤 Helmut Blum
- 👤 Siglinde Hemmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:24
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3839; C07F9/3873; A; A61; A61P; A61P3/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
10 words
4-Dimethylamino-1-hydroxybutane-1,1-diphosphonic acid of the formula ##STR2## and water-soluble salts thereof.
Claim 2
Dependent Claim
10 words
4-Dimethylamino-1-hydroxybutane-1,1-diphosphonic acid of the formula ##STR2## and water-soluble salts thereof.
Claim 3
Dependent Claim
25 words
A pharmaceutical composition comprising a calcium binding effective quantity of 4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid or a pharmaceutically acceptable water-soluble base addition salt thereof, and pharmaceutical adjuvant material.
Claim 4
Dependent Claim
25 words
A pharmaceutical composition comprising a calcium binding effective quantity of 4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid or a pharmaceutically acceptable water-soluble base addition salt thereof, and pharmaceutical adjuvant material.
Claim 5
Dependent Claim
16 words
A pharmaceutical composition in accordance with claim 2 wherein said composition is in unit dosage form.
Claim 6
Independent Claim
31 words
A method of treating a mammal requiring a calcium binding agent comprising treating said mammal with an effective quantity of 4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid or a pharmaceutically acceptable water-soluble base addition salt thereof.
Claim 7
Independent Claim
31 words
A method of treating a mammal requiring a calcium binding agent comprising treating said mammal with an effective quantity of 4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid or a pharmaceutically acceptable water-soluble base addition salt thereof.
Claim 8
Dependent Claim
27 words
A method in accordance with claim 4 wherein the effective quantity is in the range of from about 0.05 to about 500 mg. per kg. body weight.
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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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |