US4137309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Therapeutic treatment
Assignee: Procter and Gamble Co
•
Filing: 1976-10-14
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Granted: 1979-01-30
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Expires: 1996-10-14
Abstract
Abstract Organophosphonate compounds are used in the treatment of sickle cell anemia and other hemoglobinopathies, as well as attendant peripheral vascular diseases.
Inventors
- 👤 Barry F. Van Duzee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:10
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/66
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
26 words
A process for treating sickle cell anemia comprising administering to patients in need of such treatment a safe and effective amount of a geminal diphosphonate compound.
Claim 2
Dependent Claim
26 words
A process for treating sickle cell anemia comprising administering to patients in need of such treatment a safe and effective amount of a geminal diphosphonate compound.
Claim 3
Dependent Claim
29 words
A process according to claim 1 wherein the geminal diphosphonate compound is a member selected from the group consisting of ethane-1-hydroxy-1,1-diphosphonic acid, and the pharmaceutically-acceptable salts and esters thereof.
Claim 4
Dependent Claim
18 words
A process according to claim 2 wherein the geminal diphosphonate compound is a sodium salt of ethane-1-hydroxy-1,1-diphosphonic acid.
Claim 5
Dependent Claim
29 words
A process according to claim 1 wherein the geminal diphosphonate compound is a member selected from the group consisting of methanediphosphonic acid, and the pharmaceutically-acceptable salts and esters thereof.
Claim 6
Dependent Claim
29 words
A process according to claim 1 wherein the geminal diphosphonate compound is a member selected from the group consisting of methanedichlorodiphosphonic acid, and the pharmaceutically-acceptable salts and esters thereof.
References Cited (Backward Citations)
US3584125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |