Patent US3565949A successfully refreshed from Google Patents.
US3565949A
Expired / Lapsed
US
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Diaminoalkanediylidenetetraphosphonic acids useful in cleaning compositions
Assignee: FMC Corp
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Filing: 1967-08-15
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Granted: 1971-02-23
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Expires: 1987-08-15
Abstract
Abstract CLEANSING COMPOSITIONS ARE DESCRIBED CONTAINING A SYNTHETIC ORGANIC DETERGENT AND AS A BUILDER THEREFOR A DIAMINOALKANEDIYLIDENETETRAPHOSPHONIC ACID.
Inventors
- 👤 Richard Williamson Cummins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:36
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/36; C11D3/364; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3839; C07F9/3873
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |