US3915879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent compositions
Assignee: Lever Brothers Co
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Filing: 1974-04-05
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Granted: 1975-10-28
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Expires: 1994-04-05
Abstract
Abstract Certain partial esters and partial amides of cyclic polycarboxylic acids can act as detergency builders and fabric softeners when incorporated into otherwise conventional fabric washing detergent compositions.
Inventors
- 👤 Philip John Barnett
- 👤 Winston Michael Fox
- 👤 Thomas Mcgee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:01
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/32; C11D3/0005; C11D3/001; C11D3/20; C11D3/2093
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
A DETERGENT COMPOSITION COMPRISING A FROM 1-50% BY WEIGHT OF AN ANIONIC, A NONINIC AN AMPHPTERIC, A ZWITTERIONIC ORGAIC DETERGENT ACTIVECOMPOUND OR A MIXTURE THEREOF. AND B. FROM 5-60% BY WEIGHT OF A POLYCARBOXYLIC ACID DERIVATIVE OF THE FOLLOWING GENERAL FORMULA
Claim 2
Dependent Claim
41 words
A DETERGENT COMPOSITION COMPRISING A FROM 1-50% BY WEIGHT OF AN ANIONIC, A NONINIC AN AMPHPTERIC, A ZWITTERIONIC ORGAIC DETERGENT ACTIVECOMPOUND OR A MIXTURE THEREOF. AND B. FROM 5-60% BY WEIGHT OF A POLYCARBOXYLIC ACID DERIVATIVE OF THE FOLLOWING GENERAL FORMULA
Claim 3
Dependent Claim
26 words
A composition according to claim 1, wherein n 1, R is a substantially linear primary or secondary alkyl chain with 16-18 carbon atoms, and m 2.
Claim 4
Dependent Claim
28 words
A composition according to claim 1, wherein X 0, n 2, m 2 and R is a substantially linear primary or secondary alkyl chain with 16-18 carbon atoms.
References Cited (Backward Citations)
US3692684A
Cited
US3844982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |