US3846482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted ethane diphosphonic acids and salts
Assignee: Monsanto Co
•
Filing: 1972-08-23
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Granted: 1974-11-05
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Expires: 1992-08-23
Abstract
Abstract WHEREIN R3 is hydrogen, a metal ion, or an organic radical. New and useful substituted ethane diphosphonic acids and salts and esters thereof as exemplified by the compound having the formula 2 OXYETHANE-1,1-DIPHOSPHONIC ACID AND PROCESSES FOR PREPARING THE SAME WHICH GENERICALLY COMPRISE THE ''''DE-OXIRANIZATION'''' OF AN EPOXY ETHANE DIPHOSPHONATE HAVING THE FORMULA
Inventors
- 👤 A Kerst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:57
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3839; C07F9/547; C07F9/655; C07F9/65502; C07F9/65505; D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
6 words
AN ETHANE DIPHOSPHONATE OF THE FORMULA
Claim 2
Dependent Claim
6 words
AN ETHANE DIPHOSPHONATE OF THE FORMULA
Claim 3
Dependent Claim
10 words
A compound of claim 1 which is disodium 2-oxy ethane-1,1-diphosphonate.
Claim 4
Dependent Claim
11 words
A compound of claim 1 which is tetrapotassium 2-oxy ethane-1, 1-diphosphonate.
Claim 5
Dependent Claim
2 words
2-oxyethane-1,1-diphosphonic acid.
Claim 6
Dependent Claim
2 words
2-oxyethane-1,1-diphosphonic acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |