US2820767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypochlorite bleaching composition and method of making
Assignee: Olin Corp
•
Filing: 1955-02-21
•
Granted: 1958-01-21
•
Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Homer L Robson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:03
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/20; C11; C11D; C11D11/00; C11D11/02; C11D3/00; C11D3/16; C11D3/20; C11D3/22; C11D3/222; C11D3/225; D; D06; D06L; D06L4/00; D06L4/20; D06L4/22; D06L4/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A COMPOSITION OF MATTER SUITABLE FOR USE IN LAUNDERING CONSISTING OF FROM 10 TO 25 PERCENT BY WEIGHT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBOXYMETHYLCELLULOSE AND SODIUM CARBOXYMETHYLHYDROXYETHYL CELLULOSE AND FROM 90 TO 75 PERCENT BY WEIGHT OF SODIUM SULFATE, SAID COMPOSITION HAVING BEEN PREPARED BY SPRAY DRYING AN AQUEOUS MIXTURE OF FROM 2 TO 10 PERCENT BY WEIGHT OF SAID MATERIAL AND FROM 3 TO 9 PARTS BY WEIGHT OF SODIUM SULFATE PER PART BY WEIGHT OF SAID MATERIAL TO PROVIDE A SPRAY DRIED PRODUCT CONTAINING FROM 0.5 TO 4 PERCENT BY WEIGHT OF WATER AND VACUUM DRYING THE SPRAY DRIED PRODUCT AT A TEMPERATURE UP TO ABAOUT 150*C. TO PROVIDE A VACUUM DRIED PRODUCT CONTAINING FROM ABOUT 0.1 TO 0.3 PERCENT BY WEIGHT OF WATER.
Claim 2
Dependent Claim
131 words
A COMPOSITION OF MATTER SUITABLE FOR USE IN LAUNDERING CONSISTING OF FROM 10 TO 25 PERCENT BY WEIGHT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBOXYMETHYLCELLULOSE AND SODIUM CARBOXYMETHYLHYDROXYETHYL CELLULOSE AND FROM 90 TO 75 PERCENT BY WEIGHT OF SODIUM SULFATE, SAID COMPOSITION HAVING BEEN PREPARED BY SPRAY DRYING AN AQUEOUS MIXTURE OF FROM 2 TO 10 PERCENT BY WEIGHT OF SAID MATERIAL AND FROM 3 TO 9 PARTS BY WEIGHT OF SODIUM SULFATE PER PART BY WEIGHT OF SAID MATERIAL TO PROVIDE A SPRAY DRIED PRODUCT CONTAINING FROM 0.5 TO 4 PERCENT BY WEIGHT OF WATER AND VACUUM DRYING THE SPRAY DRIED PRODUCT AT A TEMPERATURE UP TO ABAOUT 150*C. TO PROVIDE A VACUUM DRIED PRODUCT CONTAINING FROM ABOUT 0.1 TO 0.3 PERCENT BY WEIGHT OF WATER.
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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) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |