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US3230171A
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Bleaching composition
Assignee: Dow Chemical Co
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Filing: 1963-03-04
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Granted: 1966-01-18
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 John R Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:05
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3942; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A BLEACHING COMPOSITION CONSISTING ESSENTIALLY OF POTASSIUM PYROSULFATE AND CALCIUM PEROXIDE WHEREIN SAID PYROSULFATE AND PEROXIDE ARE IN A RATIO TO EACH OTHER BY WEIGHT SUCH THAT WHEN MIXED TOGETHER IN WATER AN AQUEOUS BLEACHING MIXTURE HAVING A PH OF FROM ABOUT 9.5 TO ABOUT 1.0 IS PRODUCED.
Claim 2
Dependent Claim
48 words
A BLEACHING COMPOSITION CONSISTING ESSENTIALLY OF POTASSIUM PYROSULFATE AND CALCIUM PEROXIDE WHEREIN SAID PYROSULFATE AND PEROXIDE ARE IN A RATIO TO EACH OTHER BY WEIGHT SUCH THAT WHEN MIXED TOGETHER IN WATER AN AQUEOUS BLEACHING MIXTURE HAVING A PH OF FROM ABOUT 9.5 TO ABOUT 1.0 IS PRODUCED.
References Cited (Backward Citations)
US850606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |