US3637339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stain removal
Assignee: Individual
•
Filing: 1968-05-03
•
Granted: 1972-01-25
•
Expires: 1988-05-03
Abstract
Abstract Composition for removing stains from fabrics, including, an enzyme, a per-compound, and an activator for the perborate.
Inventors
- 👤 Frederick William Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3942; C11D3/02; C11D3/04; C11D3/046; C11D3/16; C11D3/38; C11D3/386; C11D3/38609; C11D3/3902; C11D3/3905; C11D3/3907
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
14 words
A process as in claim 1 in which said peroxygen compound is a perborate.
Claim 2
Dependent Claim
29 words
A process as in claim 1 in which said peroxygen compound is a perborate and the mol ratio of available oxygen to said activator is about 1:1 to 6:1.
Claim 3
Dependent Claim
12 words
Process as in claim 1 in which said activator is N,N,N'',N''-tetra-acetyl ethylenediamine.
Claim 4
Dependent Claim
26 words
Process as in claim 1 in which said composition contains sodium perborate and a water soluble surface-active nonionic detergent and said activator is a m-chlorobenzyol imide.
Claim 5
Dependent Claim
37 words
A process as in claim 2 in which the perborate is sodium perborate and the activator is selected from the group consisting of a carboxylic ester activator, a carboxylic anhydride activator and a carboxylic acyl amide activator.
Claim 6
Dependent Claim
15 words
A process as in claim 3 in which said acyl group is an acetyl group.
Claim 7
Dependent Claim
15 words
A process as in claim 3 in which said acyl group is a benzoyl group.
Claim 8
Dependent Claim
17 words
A process as in claim 7 in which said enzyme is an extract of Bacillus subtilis culture.
Claim 9
Dependent Claim
14 words
A process as in claim 6 in which the activator is a benzoyl compound.
Claim 10
Dependent Claim
14 words
A process as in claim 1 in which the activator is a polyacyl amide.
Claim 11
Dependent Claim
26 words
A process as in claim 1 in which the activator is a polyacyl amide having a pair of carboxylic acyl groups on a single nitrogen atom.
Claim 12
Dependent Claim
16 words
A process as in claim 1 in which the composition contains an organic water-soluble surface-active detergent.
Claim 13
Dependent Claim
17 words
A process as in claim 6 in which the composition contains an organic water-soluble surface-active nonionic detergent.
Claim 14
Dependent Claim
17 words
A process as in claim 6 in which the composition contains an organic water-soluble surface-active anionic detergent.
Claim 15
Dependent Claim
23 words
A process as in claim 6 in which the composition contains at least about one mol of sodium perborate per mol of activator.
Claim 16
Dependent Claim
13 words
A process as in claIm 10 in which the activator is metachlorobenzoyl dimethylhydantoin.
Claim 17
Dependent Claim
13 words
A process as in claim 11 in which the acyl groups are acetyl.
Claim 18
Dependent Claim
13 words
A process as in claim 18 in which the activator is N,N,N'', N''-tetra-acetylethylenediamine.
Claim 19
Dependent Claim
15 words
A process as in claim 13 in which the composition contains a water-soluble builder salt.
Claim 20
Dependent Claim
16 words
A process as in claim 20 in which the composition contains pentasodium tripolyphosphate and sodium nitrilotriacetate.
References Cited (Backward Citations)
US2152520A
Cited
US2287064A
Cited
US2898181A
Cited
US3061550A
Cited
US3163606A
Cited
US3183266A
Cited
US3425786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |