Patent US3761412A successfully refreshed from Google Patents.
US3761412A
Expired / Lapsed
US
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Polyelectrolyte builder and detergent compositions
Assignee: FMC Corp
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Filing: 1971-11-01
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Granted: 1973-09-25
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Expires: 1991-11-01
Abstract
Abstract A NOVEL CLASS OF POLYELECTROLYTES HAVING THE FORM OF POLY-B-KETOACIDS AND THEIR SALTS IS DESCRIBED, AS IN THE USE OF THESE POLYELECTROLYTES AS BUILDERS IN DETERGENT FORMULATIONS.
Inventors
- 👤 C Lancelot
- 👤 Kellar D Mac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:34
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761; C08; C08F; C08F22/00; C08F22/04; C08F8/00; C08G; C08G67/00; C08G67/02
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |