Patent US4292192A successfully refreshed from Google Patents.
US4292192A
Expired / Lapsed
US
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Personal washing detergent bars with an effective amount of a citric acid ester
Assignee: Lever Brothers Co
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Filing: 1980-06-13
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Granted: 1981-09-29
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Expires: 2000-06-13
Abstract
Abstract Detergent bars for personal washing are given a deodorant property by including an ester of citric acid. The ester may be an acetyl derivative. The amount of ester used will be in the range of from about 0.3% to about 3%. Examples of the esters are triethyl citrate and acetyl tributyl citrate.
Inventors
- 👤 David C. Hooper
- 👤 George A. Johnson
- 👤 Donald Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:33
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/37; C; C11; C11D; C11D17/00; C11D17/0047; C11D17/006; C11D3/00; C11D3/0005; C11D3/0068; C11D3/16; C11D3/20; C11D3/2093
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
A detergent bar comprising: (i) from about 0.3% to about 3% by weight of an optionally acetylated ester of citric acid of formula ##STR2## wherein R 1 R 2 and R 3 are hydrogen or an alkyl group containing from 1 to 4 carbon atoms, provided at least one of R 1 R 2 and R 3 is an alkyl group, and R 4 is a hydroxyl or a CH 3 COO-- group; (ii) a water content of from about 5% and; (iii) up to about 94.7% of detergent active material and other components of detergent bars.
Claim 2
Dependent Claim
97 words
A detergent bar comprising: (i) from about 0.3% to about 3% by weight of an optionally acetylated ester of citric acid of formula ##STR2## wherein R 1 R 2 and R 3 are hydrogen or an alkyl group containing from 1 to 4 carbon atoms, provided at least one of R 1 R 2 and R 3 is an alkyl group, and R 4 is a hydroxyl or a CH 3 COO-- group; (ii) a water content of from about 5% and; (iii) up to about 94.7% of detergent active material and other components of detergent bars.
Claim 3
Dependent Claim
13 words
A detergent bar according to claim 1 wherein the ester is a tri-ester.
Claim 4
Dependent Claim
23 words
A detergent bar according to claim 1 or 2 wherein R 1 R 2 and R 3 are each hydrogen, ethyl or butyl.
Claim 5
Dependent Claim
20 words
A detergent bar according to claim 1 wherein the citric acid ester is present in an amount from about 0.5%.
Claim 6
Dependent Claim
21 words
A detergent bar according to claim 1 wherein the citric acid ester is present in an amount up to about 1.0%.
Claim 7
Dependent Claim
27 words
A detergent bar according to claim 1 wherein the detergent active material includes water soluble salts of long chain (C 8 to C 24 ) aliphatic acids.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |