Patent US3764568A successfully refreshed from Google Patents.
US3764568A
Expired / Lapsed
US
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Unsaturated zwitterionic surface active composition
Assignee: Procter and Gamble Co
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Filing: 1972-04-28
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Granted: 1973-10-09
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Expires: 1992-04-28
Abstract
Abstract Zwitterionic surface active compounds are provided having the following formula: WHEREIN R1 represents an unsaturated or saturated aliphatic group having six to 24 carbon atoms, R2 and R3 each represent an alkyl group having one to six carbon atoms, and Z represents nitrogen or phosphorus. These compounds have valuable surface active properties that make them especially useful as detergent compounds.
Inventors
- 👤 M Barbera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:47
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/88; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/54; C07F9/5428; C11D1/886
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
A detergent composition of claim 1 in which the proportion by weight of said surface active compound to said builder is 5:1 to 1:10.
References Cited (Backward Citations)
US3594411A
Cited
US3679592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |