US3234124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequestration of metal ions
Assignee: Monsanto Co
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Filing: 1962-10-18
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Granted: 1966-02-08
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Expires: 1982-10-18
Abstract
No abstract record available.
Inventors
- 👤 Riyad R Irani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:48
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/55; A61Q; A61Q5/00; A61Q5/02; C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/14; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C07F9/3817; C11; C11D; C11D3/00; C11D3/16; C11D3/36; C11D3/364; C11D9/00; C11D9/04; C11D9/22; C11D9/34; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/38; C22B3/386; A61K2800/00; A61K2800/40; A61K2800/51; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/911; Y10S210/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A METHOD OF INHIBITING THE PRECIPITATION OF HEAVY METAL CATIONS FROM AN AQUEOUS SOLUTION CONTAINING SAID CATIONS WHICH COMPRISES INCORPORATING THEREIN A SEQUESTERANT SELECTED FROM THE GROUP CONSISTING OF AMINO TRI(LOWER ALKYLIDENEPHOSPHONIC ACIDS) AND THEIR WATER SOLUBLE SALTS.
Claim 2
Independent Claim
38 words
A METHOD OF INHIBITING THE PRECIPITATION OF HEAVY METAL CATIONS FROM AN AQUEOUS SOLUTION CONTAINING SAID CATIONS WHICH COMPRISES INCORPORATING THEREIN A SEQUESTERANT SELECTED FROM THE GROUP CONSISTING OF AMINO TRI(LOWER ALKYLIDENEPHOSPHONIC ACIDS) AND THEIR WATER SOLUBLE SALTS.
References Cited (Backward Citations)
US2599807A
Cited
US2841611A
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US2917528A
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US3060127A
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US2976248A
Cited
US3160632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |