US2889204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removing sodium chlorate from solid sodium hydroxide
Assignee: Dow Chemical Co
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Filing: 1957-03-15
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Granted: 1959-06-02
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Expires: 1977-03-15
Abstract
No abstract record available.
Inventors
- 👤 Robert H Meyer
- 👤 Arthur K Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:34
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/28; C01D1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR REDUCING THE AMOUNT OF SODIUM CHLORATE IN INTIMATE ADMIXTURE WITH SODIUM HYDROXIDE, WHICH COMPRISES; HEATING SAID MIXTURE TO A TEMPERATURE ABOVE 300 DEGREES CENTIGRADE, AND ADDING A 1.5 TO 1 STOICHIOMETRIC EQUIVALENT OF SODIUM HYDRIDE BASED ON THE CHLORATE PRESENT THERETO.
Claim 2
Dependent Claim
44 words
A PROCESS FOR REDUCING THE AMOUNT OF SODIUM CHLORATE IN INTIMATE ADMIXTURE WITH SODIUM HYDROXIDE, WHICH COMPRISES; HEATING SAID MIXTURE TO A TEMPERATURE ABOVE 300 DEGREES CENTIGRADE, AND ADDING A 1.5 TO 1 STOICHIOMETRIC EQUIVALENT OF SODIUM HYDRIDE BASED ON THE CHLORATE PRESENT THERETO.
References Cited (Backward Citations)
GB642946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |