Patent US5080810A successfully refreshed from Google Patents.
US5080810A
Expired / Lapsed
US
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Fabric softener for laundry dryer sheet
Assignee: Albemarle Corp
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Filing: 1991-02-08
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Granted: 1992-01-14
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Expires: 2011-02-08
Abstract
Abstract The softness of laundered fabrics, such as cotton fabrics, is improved by drying them in the presence of a laundry dryer sheet containing as the fabric softener a mixture or 50-80% by weight of N-dihydrogenatedtallow-N,N-dimethylammonium chloride and 50-20% by weight of N-octadecyl-N,N-dimethylamine oxide.
Inventors
- 👤 Kim R. Smith
- 👤 Terry Crutcher
- 👤 Joe D. Sauer
- 👤 Jeffrey W. Perine
- 👤 James E. Borland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:15
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/041; C11D17/047; C11D1/00; C11D1/66; C11D1/835; C11D17/046; D; D06; D06M; D06M13/00; D06M13/322; D06M13/388; D06M13/46; D06M13/463; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; C11D1/38; C11D1/62; C11D1/75
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
31 words
A laundry dryer sheet comprising a flexible absorbent substrate impregnated with a mixture of 50-80% by weight of N-dihydrogenatedtallow-N,N-dimethylammonium chloride and 50-20% by weight of N-octadecyl-N,N-dimethylamine oxide as a fabric softener.
Claim 2
Dependent Claim
31 words
A laundry dryer sheet comprising a flexible absorbent substrate impregnated with a mixture of 50-80% by weight of N-dihydrogenatedtallow-N,N-dimethylammonium chloride and 50-20% by weight of N-octadecyl-N,N-dimethylamine oxide as a fabric softener.
Claim 3
Dependent Claim
33 words
The laundry dryer sheet of claim 1 wherein the fabric softener is a mixture of about 75% by weight of the substituted ammonium chloride and about 25% by weight of the amine oxide.
Claim 4
Dependent Claim
28 words
A process for improving the softness of a laundered fabric which comprises drying the laundered fabric in an automatic dryer containing a laundry dryer sheet of claim 1.
Claim 5
Dependent Claim
35 words
The process of claim 3 wherein the fabric softener in the dryer sheet is a mixture of about 75% by weight of the substituted ammonium chloride and about 25% by weight of the amine oxide.
Claim 6
Dependent Claim
10 words
The process of claim 4 wherein the fabric is cotton.
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) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |