US3776850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent formulations
Assignee: Ethyl Corp
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Filing: 1972-07-28
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Granted: 1973-12-04
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Expires: 1992-07-28
Abstract
Abstract TO OBVIATE EUTROPHICATION OF WATER, NON-PHOSPHORUS DETERGENT BUILDERS AND SEQUESTERING AGENTS ARE PROVIDED. THESE AR EITHER (A) A WATER SOLUBLE POLYMER OF A 1-OXYACYLOPROPANE-2,3DISCARBOXYLIC ACID, (B) A WATER SOLUBLE SALT OF A POLY-1-OXACYCLORPROPANE2,3-DICARBOXYLIC ACID OR A MIXTURE OF (A) AND (B). CONVENTIONAL DETERGENT ACTIVES MAY BE USED WITH THESE BUILDERS.
Inventors
- 👤 T Pearson
- 👤 G Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:29
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/3711
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |