US4017411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleaching articles
Assignee: Procter and Gamble Co
•
Filing: 1975-03-27
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Granted: 1977-04-12
•
Expires: 1995-03-27
Abstract
Abstract Non-starch thickened peroxygen bleaches, and articles releasably containing same, especially adapted for use in an automatic dryer are provided.
Inventors
- 👤 Francis Louvaine Diehl
- 👤 Mario Stephen Marsan
- 👤 James Byrd Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:49
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/041; C11D3/00; C11D3/39; C11D3/3947; D; D06; D06L; D06L4/00; D06L4/10; D06L4/15
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
An article especially adapted for bleaching fabrics in an automatic dryer, comprising: a. a non-starch thickened peroxygen bleaching composition characterized by a viscosity of from 200 cps to 100,000 cps; and b. a water-insoluble dispensing means characterized by being in the form of a pouch having perforations of a diameter from about 0.05 mm to about 3 mm or embossed in such a manner that upon rupture perforations are formed having a diameter of from about 0.05 mm to about 3 mm, wherein said bleaching composition is in releasable combination with the dispensing means.
Claim 2
Dependent Claim
94 words
An article especially adapted for bleaching fabrics in an automatic dryer, comprising: a. a non-starch thickened peroxygen bleaching composition characterized by a viscosity of from 200 cps to 100,000 cps; and b. a water-insoluble dispensing means characterized by being in the form of a pouch having perforations of a diameter from about 0.05 mm to about 3 mm or embossed in such a manner that upon rupture perforations are formed having a diameter of from about 0.05 mm to about 3 mm, wherein said bleaching composition is in releasable combination with the dispensing means.
Claim 3
Dependent Claim
17 words
An article according to claim 1 wherein the pouch comprises flexible plastic embossed in a regular pattern.
Claim 4
Dependent Claim
36 words
An article according to claim 2 whereby the pouch, on rupture, has at least 30% of its total surface area comprised of holes having an average diameter of from about 0.5 mm to about 1 mm.
Claim 5
Dependent Claim
24 words
An article according to claim 1 wherein the bleaching composition is characterized by a viscosity in the range from 1000 cps to 20,000 cps.
Claim 6
Dependent Claim
71 words
An article according to claim 1 wherein the thickened bleaching composition comprises: a. from about 2% to about 15% by weight of hydrogen peroxide; b. from about 0.1% to about 10% by weight of a thickener selected from impalpable hydrophilic synthetic clays characterized in being a tri-layered mineral having an octahedral magnesia sheet between two tetrahedral silica sheets via shared oxygen atoms and smectite clays; and c. the balance comprising water.
Claim 7
Dependent Claim
22 words
An article according to claim 5 wherein the clay is characterized by an average particle size in the range below about 50μ.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |