Patent US3697573A successfully refreshed from Google Patents.
US3697573A
Expired / Lapsed
US
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Linear alkylphenol sulfate-sulfonate phosphate-free detergent actives
Assignee: Chevron USA Inc
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Filing: 1970-05-05
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Granted: 1972-10-10
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Expires: 1990-05-05
Abstract
Abstract Heavy duty detergent active materials capable of heavy duty washing performance in the absence of phosphate builders are provided, the materials comprising alkylphenol sulfate-sulfonate compounds in which the alkyl groups are linear of 16-24 carbon atoms,.
Inventors
- 👤 Mitchell Danzik
- 👤 Ralph House
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 23:12
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/22; C07; C07C; C07C309/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
18 words
The compound of claim 1 in which R is an alkyl radical of 18 to 20 carbon atoms.
Claim 2
Dependent Claim
13 words
The compound of claim 1 in which X is an alkali metal cation.
Claim 3
Dependent Claim
10 words
The compound of claim 3 in which X is Na.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |