US3177148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleaching processes and compositions
Assignee: Lever Brothers Co
•
Filing: 1964-01-06
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Granted: 1965-04-06
•
Expires: 1984-01-06
Abstract
No abstract record available.
Inventors
- 👤 Bright Samuel Claude
- 👤 Mcdonnell Francis Robe Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:15
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: 4
Claim 1
Independent Claim
89 words
A PROCESS FOR BLEACHING MATERIALS WHICH COMPRISES CONTACTING THE MATERIAL TO BE BLEACHED WITH AN QUEOUS SOLUTION CONTAINING EFFECTIVE AMOUNTS OF BOTH HYDROGEN PEROXIDE AND A REACTIVE ACYL ORGANOAMIDE OF THE FORMULA RCONR1R2, WHERE RCO IS A CARBOXYLIC ACYL RADICAL, R1 IS AN ACYL RADICAL, AND R2 IS AN ORGANIC RADICAL, SAID ACYL ORGANOAMIDE HAVING A TITRE IN THE PER-ACID FORMATION TEST OF NOT LESS THAN 1.5 ML. OF 0.1 N NA2S2O3, FROM ABOUT 1/4 TO ABOUT 4 MOLECULES OF AMIDE BEING EMPLOYED FOR EACH ATOM OF AVAILABLE OXYGEN.
Claim 2
Dependent Claim
89 words
A PROCESS FOR BLEACHING MATERIALS WHICH COMPRISES CONTACTING THE MATERIAL TO BE BLEACHED WITH AN QUEOUS SOLUTION CONTAINING EFFECTIVE AMOUNTS OF BOTH HYDROGEN PEROXIDE AND A REACTIVE ACYL ORGANOAMIDE OF THE FORMULA RCONR1R2, WHERE RCO IS A CARBOXYLIC ACYL RADICAL, R1 IS AN ACYL RADICAL, AND R2 IS AN ORGANIC RADICAL, SAID ACYL ORGANOAMIDE HAVING A TITRE IN THE PER-ACID FORMATION TEST OF NOT LESS THAN 1.5 ML. OF 0.1 N NA2S2O3, FROM ABOUT 1/4 TO ABOUT 4 MOLECULES OF AMIDE BEING EMPLOYED FOR EACH ATOM OF AVAILABLE OXYGEN.
Claim 3
Dependent Claim
75 words
A BLEACHING COMPOSITION CONSISTING ESSENTIALLY OF AN INORGANIC PERSALT AND A REACTIVE DIACYL ORGANOAMIDE OF THE FORMULA RCONR1R2 WHEREIN RCO IS A CARBOXYLIC ACYL RADICAL, R1 IS AN ACYL RADICAL, AND R2 IS AN ACYL-FREE ORGANIC RADICAL, SAID DIACYL ORGANOAMIDE HAVING A TITRE IN THE PER-ACID FORMATION TEST OF NOT LESS THAN 1.5 ML. OF 0.1 N NA2S2O3, FROM ABOUT 1/4 TO ABOUT 4 MOLECULES OF AMIDE BEING EMPLOYED FOR EACH ATOM OF AVAILABLE OXYGEN.
Claim 4
Dependent Claim
75 words
A BLEACHING COMPOSITION CONSISTING ESSENTIALLY OF AN INORGANIC PERSALT AND A REACTIVE DIACYL ORGANOAMIDE OF THE FORMULA RCONR1R2 WHEREIN RCO IS A CARBOXYLIC ACYL RADICAL, R1 IS AN ACYL RADICAL, AND R2 IS AN ACYL-FREE ORGANIC RADICAL, SAID DIACYL ORGANOAMIDE HAVING A TITRE IN THE PER-ACID FORMATION TEST OF NOT LESS THAN 1.5 ML. OF 0.1 N NA2S2O3, FROM ABOUT 1/4 TO ABOUT 4 MOLECULES OF AMIDE BEING EMPLOYED FOR EACH ATOM OF AVAILABLE OXYGEN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |