US3272750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition containing an oxygen releasing compound and an organic carbonate
Assignee: Lever Brothers Co
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Filing: 1963-05-03
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Granted: 1966-09-13
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
- 👤 Chase Basil Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/391; C11D3/3915; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A COMPOSITION FOR USE IN BLEACHING TEXTILE MATERIAL CONSISTING ESSENTIALLY OF AN INORGANIC PER-SALT SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL PERBORATES PERCARBONATES, PERPYROPHOSPHATES, AND PERSILICATE, AND AN ESTER SELECTED FROM THE CLASS CONSISTING OF (A) ESTER OF CARBONIC ACID HAVING THE FORMULA R1-O-CO-O-R2 WHEREIN EACH OF R1 AND R2 IS AN ORGANIC RADICAL, R1 EXERTING AN ELECTRON-ATTRACTING EFFECT, AND (B) DIETHYL PYROCARBONATE, SAID ESTERS HAVING A TITER IN THE PER-ACID FORMATION TEST OF NOT LESS THAN 1.0 ML. OF 0.1 N NA2S2O3, THE HYDROGEN PEROXIDE AND ESTER BEING PRESENT IN AMOUNTS SUFFICIENT TO PROVIDE FROM ABOUT 1/4 TO ABOUT 2 MOLECULES OF ESTER PER 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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |