Patent US3748267A successfully refreshed from Google Patents.
US3748267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent compositions
Assignee: Lever Brothers Co
•
Filing: 1971-08-17
•
Granted: 1973-07-24
•
Expires: 1991-08-17
Abstract
Abstract A fabric-washing detergent composition incorporates, as a detergency builder, a water-soluble or water-dispersible salt of an alkylaryl dicarboxylic acid having the general formula: WHEREIN R1, R2 and R3 are hydrogen atoms or alkyl groups; R4 is an alkylene chain containing from zero to eight carbon atoms and optionally incorporating in the chain other atoms as linking groups, such as -0-, -S-, -S0- and -S02-; R5 is a group similar to R4 or is a group having the general formula: WHEREIN R6 is an alkyl group and m is 0 or 1; n is 0 or 1; and THE TOTAL NUMBER OF CARBON ATOMS IN R1, R2, R3, R4 and R5 is from six to 30.
Inventors
- 👤 D Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:33
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D3/2082; C11D1/00; C11D1/02; C11D1/04; C11D1/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
21 words
A detergent composition according to claim 1 wherein said weight ratio is in the range of about 2:1 to about 1:4.
Claim 2
Dependent Claim
36 words
A detergent composition according to claim 2 wherein said alkylaryl dicarboxylic acid has the general formula: wherein R is a linear alkyl group containing from eight to 20 carbon aToms and n is 0 or 1.
Claim 3
Dependent Claim
16 words
A detergent composition according to claim 3 wherein R contains from 12 to 16 carbon atoms.
Claim 4
Dependent Claim
11 words
A detergent composition according to claim 4 wherein n is 0.
Claim 5
Dependent Claim
42 words
A detergent composition according to claim 2 wherein said alkylaryl dicarboxylic acid has the general formula: wherein R1 and R2 are hydrogen atoms or linear alkyl groups and together contain from eight to 20 carbon atoms, and n is 0 or 1.
Claim 6
Dependent Claim
19 words
A detergent composition according to claim 6 wherein R1 and R2 together contain from 12 to 18 carbon atoms.
Claim 7
Dependent Claim
47 words
A detergent composition according to claim 2 wherein said alkylaryl dicarboxylic acid has the general formula: wherein R1 and R2 are hydrogen atoms or linear alkyl groups and together contain from eight to 20 carbon atoms, m is 0 or 1 and n is 0 or 1.
Claim 8
Dependent Claim
19 words
A detergent composition according to claim 8 wherein R1 and R2 together contain from 12 to 18 carbon atoms.
Claim 9
Dependent Claim
13 words
A detergent composition according to claim 9 wherein R2 is a hydrogen atom.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |