US3886078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-benzoylsaccharin as peroxygen bleach activator
Assignee: Wyeth Holdings LLC
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Filing: 1973-02-28
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Granted: 1975-05-27
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Expires: 1993-02-28
Abstract
Abstract N-Benzoylsaccharin is a bleach activator of high activating strength and good storage stability in bleaching compositions comprising hydrogen peroxide-releasing compounds, such as alkali metal perborates and percarbonates.
Inventors
- 👤 Frank Fred Loffelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:34
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D3/392; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
17 words
A BLEACHING COMPOSITION COMPRISING HYDROGEN PEROXIDE OR A HYDROGEN PEROXIDE-RELEASING COMPOUND AND AN ACTIVATING AMOUNT OF N-BENZOYLSACCHARIN.
Claim 2
Dependent Claim
17 words
A BLEACHING COMPOSITION COMPRISING HYDROGEN PEROXIDE OR A HYDROGEN PEROXIDE-RELEASING COMPOUND AND AN ACTIVATING AMOUNT OF N-BENZOYLSACCHARIN.
Claim 3
Dependent Claim
23 words
A composition according to claim 1 wherein the mole ratio of N-benzoylsaccharin to hydrogen peroxide-releasing compound is from about 1:1 to about 1:10.
Claim 4
Dependent Claim
19 words
A composition according to claim 2 wherein the mole ratio of N-benzoylsaccharin to hydrogen peroxide-releasing compound is about 1:1.1.
Claim 5
Dependent Claim
14 words
A composition according to claim 1 wherein the hydrogen peroxide-releasing compound is sodium perborate.
Claim 6
Dependent Claim
14 words
A composition according to claim 1 wherein the hydrogen peroxide-releasing compound is sodium percarbonate.
Claim 7
Dependent Claim
9 words
A composition according to claim 1 containing a detergent.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |